Author: "Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC)" - Searchworks@Jio Institute Digital Library Search Results

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251 results on '"Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC)"'

1. Impact of doxorubicin dose capping on the outcome of DLBCL patients with elevated body surface area

Author: Caroline Gay, Richard Delarue, Noel Milpied, Lucie Oberic, Bertrand Coiffier, Sami Boussetta, Corinne Haioun, Hervé Tilly, Gilles Salles, Thierry Lamy, Marie-Antoinette Lester, Roch Houot, CHU Pontchaillou [Rennes], Service d'immuno-hématologie pédiatrique [CHU Necker], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Hôpital Haut-Lévêque [CHU Bordeaux], CHU Bordeaux [Bordeaux], Institut Universitaire du Cancer de Toulouse - Oncopole (IUCT Oncopole - UMR 1037), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Institut National de la Santé et de la Recherche Médicale (INSERM), Service d’Hématologie [Centre Hospitalier Lyon Sud - HCL], Centre Hospitalier Lyon Sud [CHU - HCL] (CHLS), Hospices Civils de Lyon (HCL)-Hospices Civils de Lyon (HCL), Centre de Recherche en Cancérologie de Lyon (UNICANCER/CRCL), Centre Léon Bérard [Lyon]-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), The European Lymphoma Institute, Service d'hématologie clinique, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Henri Mondor-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Université Paris-Est Créteil Val-de-Marne - Faculté de médecine (UPEC Médecine), Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Unité des hémopathies lymphoïdes [CHU Henri Mondor], CHU Henri Mondor [Créteil], Groupe d'étude des proliférations lymphoïdes (GPL), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Rennes (UR)-Hôpital Pontchaillou, Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Necker - Enfants Malades [AP-HP], Institut Universitaire du Cancer de Toulouse - Oncopole ( IUCT Oncopole - UMR 1037 ), Université Toulouse III - Paul Sabatier ( UPS ), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-CHU Toulouse [Toulouse]-Institut National de la Santé et de la Recherche Médicale ( INSERM ), Centre Hospitalier Lyon Sud [CHU - HCL] ( CHLS ), Hospices Civils de Lyon ( HCL ) -Hospices Civils de Lyon ( HCL ), Centre de Recherche en Cancérologie de Lyon ( CRCL ), Centre Léon Bérard [Lyon]-Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), Assistance publique - Hôpitaux de Paris (AP-HP)-Hôpital Henri Mondor-Université Paris-Est Créteil Val-de-Marne - Paris 12 ( UPEC UP12 ), Université Paris-Est Créteil Val-de-Marne - Faculté de médecine ( UPEC Médecine ), Université Paris-Est Créteil Val-de-Marne - Paris 12 ( UPEC UP12 ), CHU Henri Mondor, Groupe d'étude des proliférations lymphoïdes ( GPL ), Université de Rouen Normandie ( UNIROUEN ), Normandie Université ( NU ) -Normandie Université ( NU ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Hôpital Pontchaillou, Microenvironment, Cell Differentiation, Immunology and Cancer ( MICMAC ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-CHU Toulouse [Toulouse]-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Hôpital Pontchaillou, and Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )
Subjects: Oncology, medicine.medical_specialty, medicine.medical_treatment, Immunology, [SDV.CAN]Life Sciences [q-bio]/Cancer, Biochemistry, [ SDV.CAN ] Life Sciences [q-bio]/Cancer, 03 medical and health sciences, 0302 clinical medicine, Internal medicine, medicine, [ SDV.MHEP.HEM ] Life Sciences [q-bio]/Human health and pathology/Hematology, Doxorubicin, Dosing, Survival rate, Body surface area, Chemotherapy, business.industry, [ SDV.SP.PHARMA ] Life Sciences [q-bio]/Pharmaceutical sciences/Pharmacology, [SDV.MHEP.HEM]Life Sciences [q-bio]/Human health and pathology/Hematology, Cell Biology, Hematology, medicine.disease, 3. Good health, Lymphoma, Surgery, Clinical trial, 030220 oncology & carcinogenesis, [SDV.SP.PHARMA]Life Sciences [q-bio]/Pharmaceutical sciences/Pharmacology, business, Diffuse large B-cell lymphoma, 030215 immunology, medicine.drug
Abstract: International audience; In 2012, the American Society of Clinical Oncology (ASCO) published guidelines regarding the dosing of chemotherapy for obese patients with cancer.1 In these patients, empiric dose reductions are often performed, usually by capping body surface area (BSA) at 2 m2 because of concerns regarding toxicity. However, there is no evidence that administering a full dose of chemotherapy in obese patients with solid cancer is associated with an increased toxicity.1 In addition, the ASCO guidelines highlight the negative impact on prognosis of reduced doses of chemotherapy in obese patients with solid tumors and thus recommend the use of full weight–based doses of cytotoxic chemotherapy, particularly in curable cancers.1 However, the impact of chemotherapy dosing has not been evaluated in non-Hodgkin lymphoma (NHL) patients with elevated BSA.In this study, we aimed to evaluate the impact of doxorubicin dose capping in patients with diffuse large B-cell lymphoma (DLBCL). DLBCL is a curable disease in which relative dose intensity has been described to be associated with treatment efficacy.2 However, clinicians may be concerned with the toxicity of high doses of anthracyclines in patients with elevated BSA.
Published: 2017
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2. HSP110 sustains chronic NF-κB signaling in activated B cell diffuse large B cell lymphoma through MyD88 stabilization

Author: Thierry Fest, Catherine Chassagne-Clément, Olaf-Oliver Wolz, Selim Ramla, Fabrice Jardin, Céline Pangault, Laurent Martin, Gaëtan Jego, Rana Mhaidly, Leila Salmi, Carmen Garrido, Alexander N.R. Weber, Christophe Boudesco, Els Verhoeyen, Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale (INSERM), Université Bourgogne Franche-Comté [COMUE] (UBFC), Equipe 'Contrôle Métabolique des Morts Cellulaires' (INSERM U1065 - C3M), Centre méditerranéen de médecine moléculaire (C3M), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut National de la Santé et de la Recherche Médicale (INSERM), Virus enveloppés, vecteurs et immunothérapie – Enveloped viruses, Vectors and Immuno-therapy (EVIR), Centre International de Recherche en Infectiologie - UMR (CIRI), Institut National de la Santé et de la Recherche Médicale (INSERM)-École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Service de Pathologie [CHU de Dijon], Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Département d'anatomopathologie, biopathologie, Centre Léon Bérard [Lyon], Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Etablissement Français du Sang Bretagne, EFS, Service d’Hématologie Clinique [Rennes], CHU Pontchaillou [Rennes], Groupe d'étude des proliférations lymphoïdes (GPL), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Génomique et Médecine Personnalisée du Cancer et des Maladies Neuropsychiatriques (GPMCND), University of Tuebingen, Centre Régional de Lutte contre le cancer Georges-François Leclerc [Dijon] (UNICANCER/CRLCC-CGFL), UNICANCER, Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Côte d'Azur (UCA), Centre International de Recherche en Infectiologie (CIRI), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Lipides - Nutrition - Cancer [Dijon - U1231] ( LNC ), Université de Bourgogne ( UB ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale ( INSERM ), Centre International de Recherche en Infectiologie ( CIRI ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-École normale supérieure - Lyon ( ENS Lyon ), CHU Dijon, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand ( CHU Dijon ), Centre méditérannéen de médecine moléculaire ( C3M ), Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Microenvironment, Cell Differentiation, Immunology and Cancer ( MICMAC ), Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Groupe d'étude des proliférations lymphoïdes ( GPL ), Université de Rouen Normandie ( UNIROUEN ), Normandie Université ( NU ) -Normandie Université ( NU ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), and Centre Régional de Lutte contre le cancer - Centre Georges-François Leclerc ( CRLCC - CGFL )
Subjects: 0301 basic medicine, Immunology, [SDV.CAN]Life Sciences [q-bio]/Cancer, Biochemistry, [ SDV.CAN ] Life Sciences [q-bio]/Cancer, Cohort Studies, 03 medical and health sciences, immune system diseases, hemic and lymphatic diseases, medicine, Tumor Cells, Cultured, Gene silencing, Humans, HSP110 Heat-Shock Proteins, B cell, Chemistry, Protein Stability, Wild type, breakpoint cluster region, NF-kappa B, Cell Biology, Hematology, medicine.disease, 3. Good health, Lymphoma, 030104 developmental biology, medicine.anatomical_structure, Cell culture, Myeloid Differentiation Factor 88, Cancer research, Lymphoma, Large B-Cell, Diffuse, Signal transduction, Diffuse large B-cell lymphoma, Signal Transduction
Abstract: International audience; Activated B cell diffuse large B cell lymphoma (ABC-DLBCL) is an aggressive lymphoproliferative disorder involving chronic NF-κB activation. Several mutations in the BCR and the MyD88 signaling pathway components, such as MyD88 L265P, are implicated in this aberrant activation. Among heat-shock proteins, HSP110 has recently been identified as a pro- survival and/or proliferation factor in many cancers but its role in ABC-DLBCL survival mechanisms remained to be established. We observed that shRNA-mediated HSP110 silencing decreased the survival of several ABC-DLBCL cell lines, decreased IgM-MyD88 co-localization and subsequent NF-κB signaling. Conversely, over-expression of HSP110 in ABC-DLBCL or non-DLBCL cell lines increased NF-κB signaling, indicating a tight interplay between HSP110 and the NF-κB pathway. Using immunoprecipitation and proximity ligation assays, we identified an interaction between HSP110 and both wild type MyD88 and MyD88 L265P. HSP110 stabilized both MyD88 forms with a stronger effect on MyD88 L265P, therefore facilitating chronic NF-κB activation. Finally, HSP110 expression was higher in lymph-node biopsies of patients with ABC-DLBCL than in normal reactive lymph nodes and a strong correlation was found between the level of HSP110 and MyD88. In conclusion, we identified HSP110 as a regulator of NF-κB signaling through MyD88 stabilization in ABC-DLBCL. This finding reveals HSP110 as a new potential therapeutic target in ABC-DLBCL.
Published: 2018
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3. Prolonged remissions after anti-PD1 discontinuation in patients with Hodgkin lymphoma

Author: Guillaume Manson, Krimo Bouabdallah, Aspasia Stamatoullas, Pauline Brice, Laurent Dercle, Hervé Ghesquières, Charles Herbaux, Roch Houot, Jean-Marc Schiano, CHU Pontchaillou [Rennes], Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), CHU Bordeaux [Bordeaux], Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC), Centre Hospitalier Lyon Sud [CHU - HCL] (CHLS), Hospices Civils de Lyon (HCL), Immunologie des tumeurs et immunothérapie (UMR 1015), Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Gustave Roussy (IGR)-Université Paris-Sud - Paris 11 (UP11), Médecine nucléaire, Département d'imagerie médicale [Gustave Roussy], Institut Gustave Roussy (IGR)-Institut Gustave Roussy (IGR), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Centre Hospitalier Régional Universitaire [Lille] ( CHRU Lille ), Assistance publique - Hôpitaux de Paris (AP-HP), Institut Paoli Calmettes, Centre Hospitalier Lyon Sud [CHU - HCL] ( CHLS ), Hospices Civils de Lyon ( HCL ), Immunologie des tumeurs et immunothérapie ( UMR 1015 ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut Gustave Roussy ( IGR ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Microenvironment, Cell Differentiation, Immunology and Cancer ( MICMAC ), Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Université Paris-Sud - Paris 11 (UP11)-Institut Gustave Roussy (IGR)-Institut National de la Santé et de la Recherche Médicale (INSERM), and Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )
Subjects: Adult, Male, 0301 basic medicine, medicine.medical_specialty, Programmed Cell Death 1 Receptor, Immunology, [SDV.CAN]Life Sciences [q-bio]/Cancer, Biochemistry, Gastroenterology, [ SDV.CAN ] Life Sciences [q-bio]/Cancer, Cohort Studies, Young Adult, 03 medical and health sciences, Antineoplastic Agents, Immunological, 0302 clinical medicine, Refractory, Internal medicine, medicine, Humans, Young adult, Prospective cohort study, ComputingMilieux_MISCELLANEOUS, Aged, biology, business.industry, Remission Induction, Cell Biology, Hematology, Middle Aged, Hodgkin Disease, 3. Good health, Discontinuation, Nivolumab, 030104 developmental biology, 030220 oncology & carcinogenesis, biology.protein, Hodgkin lymphoma, Female, Antibody, business, Cohort study
Abstract: To the editor: Anti-programmed cell death protein 1 (anti-PD-1) antibodies demonstrated remarkable efficacy in patients with relapsed/refractory (R/R) Hodgkin lymphoma (HL). In the 2 largest prospective studies that evaluated the anti-PD-1 antibodies nivolumab (CHECKMATE-205)[1][1] and
Published: 2018
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4. Uracil-DNA glycosylase is not implicated in the choice of the DNA repair pathway during B-cell class switch recombination

Author: François Boyer, Alexis Saintamand, Yves Denizot, Nour Ghazzaui, Hussein Issaoui, Contrôle de la Réponse Immune B et des Lymphoproliférations (CRIBL), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), ANR-16-CE12-0017,EpiSwitch-3RR,Dissection génétique et fonctionnelle du rôle de la région de contrôle du locus IgH au cours de la commutation isotypique(2016), Contrôle de la Réponse Immune B et des Lymphoproliférations ( CRIBL ), Institut Génomique, Environnement, Immunité, Santé, Thérapeutique ( GEIST ), Université de Limoges ( UNILIM ) -Université de Limoges ( UNILIM ) -Centre National de la Recherche Scientifique ( CNRS ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Microenvironment, Cell Differentiation, Immunology and Cancer ( MICMAC ), Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), and Jonchère, Laurent
Subjects: DNA Repair, DNA repair, Immunology, [ SDV.CAN ] Life Sciences [q-bio]/Cancer, 03 medical and health sciences, Mice, 0302 clinical medicine, Correspondence, medicine, Immunology and Allergy, Animals, Uracil-DNA Glycosidase, B cell, ComputingMilieux_MISCELLANEOUS, 030304 developmental biology, Recombination, Genetic, 0303 health sciences, B-Lymphocytes, Chemistry, DNA Repair Pathway, Immunoglobulin Class Switching, Cell biology, Infectious Diseases, medicine.anatomical_structure, Immunoglobulin class switching, [SDV.IMM.IA]Life Sciences [q-bio]/Immunology/Adaptive immunology, [SDV.IMM.IA] Life Sciences [q-bio]/Immunology/Adaptive immunology, Uracil-DNA glycosylase, Immunoglobulin G, Recombination, 030215 immunology
Abstract: International audience
Published: 2018
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5. Early expansion of circulating granulocytic myeloid-derived suppressor cells predicts development of nosocomial infections in septic patients

Author: Uhel, Fabrice, Azzaoui, Imane, Grégoire, Murielle, Pangault, Céline, Dulong, Joelle, Tadié, Jean-Marc, Gacouin, Arnaud, Camus, Christophe, Cynober, Luc, Fest, Thierry, Le Tulzo, Yves, Roussel, Mikael, Tarte, Karin, Service des Maladies Infectieuses et Réanimation Médicale, Hôpital Pontchaillou, Centre d'Investigation Clinique [Rennes] ( CIC ), Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale ( INSERM ), Microenvironment, Cell Differentiation, Immunology and Cancer ( MICMAC ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Etablissement français du sang [Rennes] ( EFS Bretagne ), Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Service d’immunologie, de thérapie cellulaire et d’hématopoïèse, Prévention et traitement de la perte protéique musculaire en situation de résistance à l'anabolisme ( PRETRRAM - EA 4466 ), Université Paris Descartes - Paris 5 ( UPD5 ), Service de biochimie et de génétique moléculaire [CHU Cochin], Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Cochin [AP-HP], Research grant from the French Intensive Care Society / Société de Réanimation de Langue Française (FICS/SRLF), Research grant from the National Institute of Cancer and Direction Générale de l'Organisation des Soins Ministère de la Santé (Projet Recherche Translationnelle 2010), Research grant from the Comité de la Recherche Translationnelle (CORECT), Rennes University Hospital, UHEL, Fabrice, Service des maladies infectieuses et réanimation médicale [Rennes] = Infectious Disease and Intensive Care [Rennes], CHU Pontchaillou [Rennes], Centre d'Investigation Clinique [Rennes] (CIC), Université de Rennes (UR)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Etablissement français du sang [Rennes] (EFS Bretagne), Prévention et traitement de la perte protéique musculaire en situation de résistance à l'anabolisme (PRETRRAM - EA 4466), Université Paris Descartes - Paris 5 (UPD5), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Cochin [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), and Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )
Subjects: immune tolerance, MESH : monocytes, [SDV.IMM] Life Sciences [q-bio]/Immunology, MDSC, [SDV.BC.IC] Life Sciences [q-bio]/Cellular Biology/Cell Behavior [q-bio.CB], [SDV.IMM.II]Life Sciences [q-bio]/Immunology/Innate immunity, infections nosocomiales, choc septique, [ SDV.BC.IC ] Life Sciences [q-bio]/Cellular Biology/Cell Behavior [q-bio.CB], sepsis, MESH: immune tolerance, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, [ SDV.MHEP ] Life Sciences [q-bio]/Human health and pathology, [SDV.BC.IC]Life Sciences [q-bio]/Cellular Biology/Cell Behavior [q-bio.CB], nosocomial infections, polynucléaires neutrophiles, [ SDV.IMM ] Life Sciences [q-bio]/Immunology, MESH : granulocytes, MESH: granulocytes, [SDV.IMM.II] Life Sciences [q-bio]/Immunology/Innate immunity, MESH: Sepsis, [ SDV.IMM.II ] Life Sciences [q-bio]/Immunology/Innate immunity, [SDV.MHEP] Life Sciences [q-bio]/Human health and pathology, MESH: monocytes, cytométrie en flux, flow cytometry, [ SDV.SPEE ] Life Sciences [q-bio]/Santé publique et épidémiologie, granulocytes, myeloid-derived suppressor cells, cross infection, MESH: cross infection, MESH : immune tolerance, [ SDV.MHEP.MI ] Life Sciences [q-bio]/Human health and pathology/Infectious diseases, [SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie, [SDV.MHEP.MI] Life Sciences [q-bio]/Human health and pathology/Infectious diseases, [SDV.IMM]Life Sciences [q-bio]/Immunology, septic shock, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, MESH : Sepsis, MESH : cross infection, monocytes, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: International audience; Rationale - Sepsis induces a sustained immune dysfunction responsible for poor outcome and nosocomial infections. Myeloid-derived suppressor cells (MDSCs) described in cancer and inflammatory processes may be involved in sepsis-induced immune suppression, but their clinical impact remains poorly defined.Objectives - To clarify phenotype, suppressive activity, origin, and clinical impact of MDSCs in patients with sepsis.Methods - Peripheral blood transcriptomic analysis was performed on 29 patients with sepsis and 15 healthy donors. A second cohort of 94 consecutive patients with sepsis, 11 severity-matched intensive care patients, and 67 healthy donors was prospectively enrolled for flow cytometry and functional experiments.Measurements and main results - Genes involved in MDSC suppressive functions, including S100A12, S100A9, MMP8, and ARG1, were up-regulated in the peripheral blood of patients with sepsis. CD14HLA-DR monocytic (M)-MDSCs were expanded in intensive care unit patients with and without sepsis and CD14CD15 low-density granulocytes/granulocytic (G)-MDSCs were more specifically expanded in patients with sepsis (P Conclusions - M-MDSCs and G-MDSCs strongly contribute to T-cell dysfunction in patients with sepsis. More specifically, G-MDSCs producing arginase 1 are associated with a higher incidence of nosocomial infections and seem to be major actors of sepsis-induced immune suppression.
Published: 2017
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6. High sensitivity of the Hematoflow™ solution for chronic myelomonocytic leukemia screening

Author: Vazquez, Romain, Roussel, Mikaël, Badaoui, Bouchra, Freynet, Nicolas, Tarfi, Sihem, Solary, Eric, Selimoglu-Buet, Dorothée, Wagner-Ballon, Orianne, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Biomécanique cellulaire et respiratoire (BCR), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Hématopoïèse normale et pathologique (U1170 Inserm), Université Paris-Sud - Paris 11 (UP11)-Institut Gustave Roussy (IGR)-Institut National de la Santé et de la Recherche Médicale (INSERM), Hôpital Henri Mondor, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Henri Mondor-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), CHU Pontchaillou [Rennes], Jonchère, Laurent, Assistance publique - Hôpitaux de Paris (AP-HP), Microenvironment, Cell Differentiation, Immunology and Cancer ( MICMAC ), Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Biomécanique cellulaire et respiratoire ( BCR ), Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Université Paris-Est Créteil Val-de-Marne - Paris 12 ( UPEC UP12 ) -Centre National de la Recherche Scientifique ( CNRS ), Hématopoïèse normale et pathologique ( U1170 Inserm ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut Gustave Roussy ( IGR ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Département d'Hématologie et d'Immunologie Biologiques, CHU Henri Mondor, Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), and Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris-Sud - Paris 11 (UP11)-Institut Gustave Roussy (IGR)
Subjects: [SDV.MHEP.HEM] Life Sciences [q-bio]/Human health and pathology/Hematology, [SDV.IB] Life Sciences [q-bio]/Bioengineering, chronic myelomonocytic leukemia, [SDV.CAN]Life Sciences [q-bio]/Cancer, [SDV.MHEP.HEM]Life Sciences [q-bio]/Human health and pathology/Hematology, Leukemia, Myelomonocytic, Chronic, classical monocyte accumulation, Flow Cytometry, Sensitivity and Specificity, [ SDV.CAN ] Life Sciences [q-bio]/Cancer, Solutions, [SDV.CAN] Life Sciences [q-bio]/Cancer, hemic and lymphatic diseases, Humans, reactive monocytosis, [SDV.IB]Life Sciences [q-bio]/Bioengineering, HematoflowTM
Abstract: International audience; Background: Accumulation of classical monocytes CD14++CD16– (also called MO1) ≥ 94% can accurately distinguish chronic myelomonocytic leukemia (CMML) from reactive monocytosis. The HematoFlow™ solution, able to quantify CD16 negative monocytes, could be a useful tool to manage monocytosis which remains a common issue in routine laboratories.Methods: Classical monocytes were quantified from 153 whole blood samples collected on EDTA using both flow cytometry methods, either MO1 percentage determination by the multiparameter assay previously published and regarded here as the reference method, or CD16 negative monocyte percentage determination by the means of HematoFlow™.Results: Both methods of classical monocyte percentage determination were highly and significantly correlated (r = 0.87, P
Published: 2017
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7. Biological and Clinical Relevance of Associated Genomic Alterations in MYD88 L265P and non-L265P-Mutated Diffuse Large B-Cell Lymphoma: Analysis of 361 Cases

Author: Thierry Jo Molina, Fabrice Jardin, Marc André, Richard Delarue, Sylvain Mareschal, Philippe Bertrand, Thierry Fest, Corinne Haioun, Pierre-Julien Viailly, Martin Figeac, Philippe Ruminy, Dominique Penther, Vinciane Marchand, Sydney Dubois, Frederic Peyrade, Jean-Michel Picquenot, Karen Leroy, Jean-Philippe Jais, Christiane Copie-Bergman, Bruno Tesson, Catherine Maingonnat, Bettina Fabiani, Elodie Bohers, Fabienne Desmots, Hervé Tilly, Nicolas Ketterer, Thierry Lamy, Pauline Peyrouze, Gilles Salles, Groupe d'étude des proliférations lymphoïdes (GPL), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Génomique et Médecine Personnalisée du Cancer et des Maladies Neuropsychiatriques (GPMCND), Laboratoire d'Informatique, de Traitement de l'Information et des Systèmes (LITIS), Université Le Havre Normandie (ULH), Normandie Université (NU)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA), Centre de Recherche des Cordeliers (CRC), Université Pierre et Marie Curie - Paris 6 (UPMC)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Res Ctr, Institut Curie, Institut Curie [Paris], Cancer et génome: Bioinformatique, biostatistiques et épidémiologie d'un système complexe, Institut Curie [Paris]-MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université Lille 2 - Faculté de Médecine, Plateforme de génomique fonctionnelle et structurelle [Lille], Institut pour la recherche sur le cancer de Lille [Lille] (IRCL)-Université de Lille, Droit et Santé, CHU Pontchaillou [Rennes], Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Etablissement français du sang [Rennes] (EFS Bretagne), Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Service d’immunologie, de thérapie cellulaire et d’hématopoïèse, Hôpital Pontchaillou, Service d'hématologie clinique, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Henri Mondor-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Centre d'Investigation Clinique [Rennes] (CIC), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), Département de pathologie [Mondor], Service de Pathologie [CHU Saint-Antoine], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Saint-Antoine [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU), Service d'immuno-hématologie pédiatrique [CHU Necker], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Necker - Enfants Malades [AP-HP], Centre de Lutte contre le Cancer Antoine Lacassagne [Nice] (UNICANCER/CAL), UNICANCER-Université Côte d'Azur (UCA), Cliniques Universitaires UCL Mont-Godinne, Department of Oncology, Lausanne Hospital, Lausanne Hospital, Institut Mondor de Recherche Biomédicale (IMRB), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-IFR10, Service d’Hématologie [Centre Hospitalier Lyon Sud - HCL], Centre Hospitalier Lyon Sud [CHU - HCL] (CHLS), Hospices Civils de Lyon (HCL)-Hospices Civils de Lyon (HCL), Centre de Recherche en Cancérologie de Lyon (UNICANCER/CRCL), Centre Léon Bérard [Lyon]-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Service d'anatomie pathologique [CHU Necker], Service d'informatique médicale et biostatistiques [CHU Necker], Institut Carnot Lymphome (CALYM), Faculté de Médecine Henri Warembourg - Université de Lille, Interactions cellulaires et moléculaires (ICM), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS), Microenvironnement et cancer (MiCa), Service d'Hématologie, Immunologie et de Thérapie Cellulaire (HITC), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Hôpital Pontchaillou-CHU Pontchaillou [Rennes], Institut National de la Santé et de la Recherche Médicale (INSERM)-IFR10-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Service d'Anatomie et cytologie pathologiques [CHU Saint-Antoine], CHU Saint-Antoine [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Département de Pathologie [CHU Necker], Université Paris Descartes - Paris 5 (UPD5)-Université Sorbonne Paris Cité (USPC)-CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Groupe d'étude des proliférations lymphoïdes ( GPL ), Université de Rouen Normandie ( UNIROUEN ), Normandie Université ( NU ) -Normandie Université ( NU ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Laboratoire d'Informatique, de Traitement de l'Information et des Systèmes ( LITIS ), Université Le Havre Normandie ( ULH ), Normandie Université ( NU ) -Normandie Université ( NU ) -Université de Rouen Normandie ( UNIROUEN ), Normandie Université ( NU ) -Institut national des sciences appliquées Rouen Normandie ( INSA Rouen Normandie ), Normandie Université ( NU ), HEMATOLOGIE, CRLCC Henri Becquerel, Centre de Recherche des Cordeliers ( CRC ), Université Paris Diderot - Paris 7 ( UPD7 ) -École pratique des hautes études ( EPHE ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Université Paris Descartes - Paris 5 ( UPD5 ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Dept Translat Res, Breast Canc Biol Grp, Cancer et génôme: Bioinformatique, biostatistiques et épidémiologie d'un système complexe, MINES ParisTech - École nationale supérieure des mines de Paris-Institut National de la Santé et de la Recherche Médicale ( INSERM ) -INSTITUT CURIE, Institut pour la recherche sur le cancer de Lille [Lille] ( IRCL ) -Université de Lille, Droit et Santé, Microenvironment, Cell Differentiation, Immunology and Cancer ( MICMAC ), Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Etablissement français du sang [Rennes] ( EFS Bretagne ), Assistance publique - Hôpitaux de Paris (AP-HP)-Hôpital Henri Mondor-Université Paris-Est Créteil Val-de-Marne - Paris 12 ( UPEC UP12 ), Centre d'Investigation Clinique [Rennes] ( CIC ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale ( INSERM ), Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Saint-Antoine [APHP], Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Necker - Enfants Malades [AP-HP], Centre Antoine Lacassagne, CRLCC Antoine Lacassagne, Institut Mondor de Recherche Biomédicale ( IMRB ), Institut National de la Santé et de la Recherche Médicale ( INSERM ) -IFR10-Université Paris-Est Créteil Val-de-Marne - Paris 12 ( UPEC UP12 ), Centre Hospitalier Lyon Sud [CHU - HCL] ( CHLS ), Hospices Civils de Lyon ( HCL ) -Hospices Civils de Lyon ( HCL ), Centre de Recherche en Cancérologie de Lyon ( CRCL ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Centre Léon Bérard [Lyon]-Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), Université Pierre et Marie Curie - Paris 6 (UPMC)-École Pratique des Hautes Études (EPHE), Mines Paris - PSL (École nationale supérieure des mines de Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut Curie [Paris]-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Université de Rennes (UR)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Institut Carnot CALYM [Pierre-Benite], Service d'anatomie et cytologie pathologiques [CHU Saint-Antoine], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-CHU Saint-Antoine [AP-HP], Université Côte d'Azur (UCA)-UNICANCER, Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Necker - Enfants Malades [AP-HP], Centre National de la Recherche Scientifique (CNRS)-IFR140-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Hôpital Henri Mondor-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Sorbonne Université (SU)-CHU Saint-Antoine [APHP], Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Université Le Havre Normandie (ULH), Normandie Université (NU), MINES ParisTech - École nationale supérieure des mines de Paris, Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR)-Hôpital Pontchaillou-CHU Pontchaillou [Rennes], Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Université Paris Diderot - Paris 7 (UPD7)-École pratique des hautes études (EPHE)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), MINES ParisTech - École nationale supérieure des mines de Paris-Institut Curie-Institut National de la Santé et de la Recherche Médicale (INSERM), Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Saint-Antoine [APHP], Centre de Recherche en Cancérologie de Lyon (CRCL), Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Centre Léon Bérard [Lyon]-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Male, Oncology, 0301 basic medicine, Cancer Research, medicine.medical_treatment, [SDV]Life Sciences [q-bio], Bioinformatics, medicine.disease_cause, Biochemistry, [ SDV.CAN ] Life Sciences [q-bio]/Cancer, Targeted therapy, 0302 clinical medicine, CDKN2A, hemic and lymphatic diseases, Copy-number variation, Aged, 80 and over, Genetics, 0303 health sciences, Mutation, NF-kappa B, High-Throughput Nucleotide Sequencing, hemic and immune systems, Genomics, Hematology, Middle Aged, Prognosis, 3. Good health, 030220 oncology & carcinogenesis, Female, Lymphoma, Large B-Cell, Diffuse, Signal Transduction, Adult, medicine.medical_specialty, Adolescent, DNA Copy Number Variations, Immunology, [SDV.CAN]Life Sciences [q-bio]/Cancer, Biology, Genetic Heterogeneity, 03 medical and health sciences, Internal medicine, medicine, Humans, Aged, 030304 developmental biology, Genome, Human, Genetic heterogeneity, Germinal center, Cancer, Cell Biology, CD79B, medicine.disease, Lymphoma, Gene expression profiling, 030104 developmental biology, Myeloid Differentiation Factor 88, Diffuse large B-cell lymphoma, 030215 immunology
Abstract: Introduction: MYD88 mutations, notably the recurrent gain-of-function L265P variant, are a distinguishing feature of Activated B-Cell like (ABC) Diffuse Large B Cell Lymphoma (DLBCL), leading to constitutive NFkB pathway activation. The frequency of MYD88 mutations in DLBCL and other hematologic malignancies is well described; however, there has not yet been a large-scale study of a MYD88 mutated patient cohort with additional Next Generation Sequencing (NGS), copy number variation (CNV), and gene expression data, in order to thoroughly characterize the associated genomic profiles of these patients. The aims of our study were to compare the L265P and non-L265P mutations in terms of pathological and genetic features, to better detail the genomic background associated with MYD88 mutations in order to delineate patients potentially sensitive to targeted therapies, and to define the prognostic value of MYD88 mutations according to different genomic contexts. Methods: A cohort of 361 DLBCL patients (94 MYD88 mutant and 267 MYD88 wild-type) was selected among the prospective, multicenter and randomized LNH-03B and LNH09-7B (NCT01195714) LYSA trials, as well as among patients sequenced at our institution as part of routine procedure. Cell of origin (COO) classification was obtained with HGU133+2.0 Affymetrix GeneChip arrays for 214 patients, with RT-MLPA for 77 patients1 and with Hans immunohistochemistry (IHC) method for 49 patients. All cases were submitted to next generation sequencing (NGS) focusing on 34 genes (Lymphopanel2) in order to analyze associated mutations and copy number variations (CNVs), as well as IHC, FISH, and clinical and prognostic analyses. Results: Importantly, we highlighted different genomic profiles for MYD88 L265P and MYD88 non-L265P mutant DLBCL, shedding light on their divergent backgrounds. Clustering analysis segregated subgroups according to associated genetic alterations among patients with either MYD88 L265P or non-L265P mutations. As such, clustering separated MYD88 L265P mutated DLBCL with associated PIM1 (52%), CD79B (52%), KMT2D (42%), and PRDM1 (32%) mutations, as well as MYD88 L265P mutated DLBCL with CDKN2A/B (67%/50%), PRDM1 (57%) and TNFAIP3 (52%) CNVs. We showed that associated CD79B and MYD88 L265P mutations act synergistically to increase NFkB pathway activation, although the majority of ABC MYD88 L265P mutant cases harbor downstream NFkB alterations, which can potentially predict BTK inhibitor resistance. Of note, although the MYD88 L265P variant was not an independent prognostic factor in ABC DLBCL, associated CD79B mutations significantly improved the survival of MYD88 L265P mutant ABC DLBCL in our cohort both in OS (p=0.02) and PFS (p=0.01), whereas the association of CARD11 or TNFAIP3 alterations did not impact survival. Interestingly, MYD88 mutant DLBCL cases were significantly more likely to experience central nervous system (CNS) relapse than MYD88 WT cases (p=0.02), as were MYD88 L265P mutant cases specifically (p=0.03). This result still tended toward statistical significance when considering only ABC patients (7 of 11 ABC CNS-relapsing cases were MYD88 mutant, p=0.1) but would have to be confirmed in a larger cohort. Conclusions: This study highlights the relative heterogeneity of MYD88 mutant DLBCBL, adding to the field's knowledge of the distinct genetic backgrounds of these subgroups. Our data highlights the theranostic and prognostic relevance of examining MYD88 and associated genomic alterations, emphasizing the usefulness of genomic profiling to best stratify patients for targeted therapy. 1. Mareschal S, Ruminy P, Bagacean C, et al. Accurate Classification of Germinal Center B-Cell-Like/Activated B-Cell-Like Diffuse Large B-Cell Lymphoma Using a Simple and Rapid Reverse Transcriptase-Multiplex Ligation-Dependent Probe Amplification Assay: A CALYM Study. The Journal of molecular diagnostics : JMD. 2015;17(3):273-283. 2. Dubois S, Viailly P-J, Mareschal S, et al. Next Generation Sequencing in Diffuse Large B Cell Lymphoma Highlights Molecular Divergence and Therapeutic Opportunities: a LYSA Study. Clinical cancer research : an official journal of the American Association for Cancer Research. 2016;22(12):2919-2928. Disclosures Salles: Novartis: Consultancy, Honoraria; Mundipharma: Honoraria; Amgen: Consultancy, Honoraria; Celgene: Consultancy, Honoraria; Gilead: Honoraria, Research Funding; Janssen: Consultancy, Honoraria; Roche/Genentech: Consultancy, Honoraria, Research Funding.
Published: 2017
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8. The AID-Cre-ERT2 Model: A Tool for Monitoring B Cell Immune Responses and Generating Selective Hybridomas

Author: Le Gallou, Simon, Nojima, Takuya, Kitamura, Daisuke, Weill, Jean-Claude, Reynaud, Claude-Agnès, Institut Necker Enfants-Malades (INEM - UM 111 (UMR 8253 / U1151)), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Institut Necker Enfants-Malades (INEM) ( INEM - UM 111 (UMR 8253 / U1151) ), Université Paris Descartes - Paris 5 ( UPD5 ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), Microenvironment, Cell Differentiation, Immunology and Cancer ( MICMAC ), Université de Rennes 1 ( UR1 ), and Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )
Subjects: B-Lymphocytes, Hybridomas, RNA, Untranslated, Fluorescent reporter, Integrases, Fate mapping, Gene Expression, [SDV.CAN]Life Sciences [q-bio]/Cancer, Memory B cells, [ SDV.CAN ] Life Sciences [q-bio]/Cancer, Cell Line, Mice, Genes, Reporter, Genetic Loci, germinal center, Cell Line, Tumor, Cytidine Deaminase, Gene Targeting, [ SDV.IMM ] Life Sciences [q-bio]/Immunology, Animals, [SDV.IMM]Life Sciences [q-bio]/Immunology, Gene Knock-In Techniques, Aicda, Immunologic Memory, Biomarkers
Abstract: International audience; Expression of activation-induced cytidine deaminase (AID) is the hallmark of B cells engaged in an immune response in germinal centers. We designed an inducible fate-mapping reporter mouse in which AID-expressing B cells could be timely and irreversibly marked, by knockin at the Aicda locus of a tamoxifen-inducible Cre recombinase. This mouse model allows notably for the long-term follow-up of memory B cells and plasma cells engaged in an immune response. We describe here a protocol to generate hybridomas from small memory subsets that can be easily traced and identified in this mouse line through Cre-activated fluorescent reporters.
Published: 2017
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9. Intensive chemotherapy followed by autologous stem cell transplantation in primary central nervous system lymphomas (PCNSLs). Therapeutic outcomes in real life—experience of the French Network

Author: Schenone, Laurence, Houillier, Caroline, Tanguy, Marie Laure, Choquet, Sylvain, Agbetiafa, Kossi, Ghesquières, Hervé, Damaj, Gandhi, Schmitt, Anna, Bouabdallah, Krimo, Ahle, Guido, Gressin, Remy, Cornillon, Jérôme, Houot, Roch, Marolleau, Jean-Pierre, Fornecker, Luc-Matthieu, Chinot, Olivier, Peyrade, Frédéric, Bouabdallah, Reda, Moluçon-Chabrot, Cécile, Gyan, Emmanuel, Chauchet, Adrien, Casasnovas, Olivier, Oberic, Lucie, Delwail, Vincent, Abraham, Julie, Roland, Virginie, Waultier-Rascalou, Agathe, Willems, Lise, Morschhauser, Franck, Fabbro, Michel, Ursu, Renata, Thieblemont, Catherine, Jardin, Fabrice, Tempescul, Adrian, Malaise, Denis, Touitou, Valérie, Nichelli, Lucia, Le Garff-Tavernier, Magali, Plessier, Aurélie, Bourget, Philippe, Bonmati, Caroline, Wantz-Mézières, Sophie, Giordan, Quentin, Dorvaux, Véronique, Charron, Cyril, Jabeur, Waliyde, Hoang-Xuan, Khê, Taillandier, Luc, Soussain, Carole, Service d'Hématologie [CHRU Nancy], Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Institut du Cerveau = Paris Brain Institute (ICM), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut Gustave Roussy (IGR), Service de biostatistique et d'épidémiologie (SBE), Direction de la recherche clinique [Gustave Roussy], Institut Gustave Roussy (IGR)-Institut Gustave Roussy (IGR), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Département d'hématologie, Institut Curie, Site Saint-Cloud, Centre Hospitalier Lyon Sud [CHU - HCL] (CHLS), Hospices Civils de Lyon (HCL), CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN), Institut Bergonié [Bordeaux], UNICANCER, CHU Bordeaux [Bordeaux], Service de Neurologie [Hôpitaux Civils de Colmar], Hôpitaux Civils Colmar, Centre Hospitalier Universitaire [Grenoble] (CHU), Institut de Cancérologie Lucien Neuwirth, Centre Hospitalier Universitaire de Saint-Etienne [CHU Saint-Etienne] (CHU ST-E), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Microenvironment and B-cells: Immunopathology,Cell Differentiation, and Cancer (MOBIDIC), Université de Rennes (UR)-Etablissement français du sang [Rennes] (EFS Bretagne)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Amiens-Picardie, HEMATIM - Hématopoïèse et immunologie - UR UPJV 4666 (HEMATIM), Université de Picardie Jules Verne (UPJV)-CHU Amiens-Picardie-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Strasbourg, Institut de neurophysiopathologie (INP), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Hôpital de la Timone [CHU - APHM] (TIMONE), Centre de Lutte contre le Cancer Antoine Lacassagne [Nice] (UNICANCER/CAL), UNICANCER-Université Côte d'Azur (UCA), Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC), Service d’Hématologie Biologique [CHU Clermont-Ferrand], CHU Gabriel Montpied [Clermont-Ferrand], CHU Clermont-Ferrand-CHU Clermont-Ferrand-CHU Estaing [Clermont-Ferrand], CHU Clermont-Ferrand, Hôpital Bretonneau, Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Institut Universitaire du Cancer de Toulouse - Oncopole (IUCT Oncopole - UMR 1037), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Institut National de la Santé et de la Recherche Médicale (INSERM), CIC - Poitiers, Université de Poitiers-Centre hospitalier universitaire de Poitiers (CHU Poitiers)-Direction Générale de l'Organisation des Soins (DGOS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Hôpital Dupuytren [CHU Limoges], Centre Hospitalier Saint Jean de Perpignan, Hôpital Universitaire Carémeau [Nîmes] (CHU Nîmes), Centre Hospitalier Universitaire de Nîmes (CHU Nîmes), Hôpital Cochin [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Institut du Cancer de Montpellier (ICM), Hopital Saint-Louis [AP-HP] (AP-HP), NF-kappaB, Différenciation et Cancer (OncokappaB (URP_7324)), Université Paris Cité (UPCité), Génomique et Médecine Personnalisée du Cancer et des Maladies Neuropsychiatriques (GPMCND), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre de Lutte Contre le Cancer Henri Becquerel Normandie Rouen (CLCC Henri Becquerel), Centre Hospitalier Régional Universitaire de Brest (CHRU Brest), Département d'Oncologie Chirurgicale [Institut Curie], Institut Curie [Paris], Laboratoire d'Imagerie Translationnelle en Oncologie (LITO ), Institut Curie [Paris]-Institut National de la Santé et de la Recherche Médicale (INSERM), Hôpital Beaujon [AP-HP], CHU Necker - Enfants Malades [AP-HP], Biology, genetics and statistics (BIGS), Inria Nancy - Grand Est, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Institut Élie Cartan de Lorraine (IECL), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Institut Élie Cartan de Lorraine (IECL), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Hôpital de Mercy, Centre hospitalier régional Metz-Thionville (CHR Metz-Thionville), Hôpital Ambroise Paré [AP-HP], Maladies neurodéveloppementales et neurovasculaires (NeuroDiderot (UMR_S_1141 / U1141)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), Centre de Recherche en Automatique de Nancy (CRAN), Institut Curie - Saint Cloud (ICSC), Immunité et cancer (U932), and We thank the clinicians involved in the French National 'Lymphome Oculo-Cérébral' LOC network, part of the network for rare cancers of the central nervous system, 'RENOCLIP-LOC Network', approved by the French National Institute of Cancer (INCa).
Subjects: Transplantation, Hematology, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: International audience; We analysed the therapeutic outcomes of all consecutive patients with primary central nervous system lymphoma (PCNSL) registered in the prospective French database for PCNSL and treated with intensive chemotherapy (IC) followed by autologous stem cell transplantation (IC-ASCT) between 2011 and November 2019 (271 patients recruited, 266 analysed). In addition, treatment-related complications of thiotepa-based IC-ASCT were analysed from the source files of 85 patients from 3 centers. Patients had received IC-ASCT either in first-line treatment (n\,=\,147) or at relapse (n\,=\,119). The median age at IC-ASCT was 57 years (range: 22-74). IC consisted of thiotepa-BCNU (n\,=\,64), thiotepa-busulfan (n\,=\,24), BCNU-etoposide-cytarabine-melphalan (BEAM, n\,=\,36) and thiotepa-busulfan-cyclophosphamide (n\,=\,142). In multivariate analysis, BEAM and ASCT beyond the first relapse were adverse prognostic factors for relapse risk. The risk of treatment-related mortality was higher for ASCT performed beyond the first relapse and seemed higher for thiotepa-busulfan-cyclophosphamide. Thiotepa-BCNU tends to result in a higher relapse rate than thiotepa-busulfan-cyclophosphamide and thiotepa-busulfan. This study confirms the role of IC-ASCT in first-line treatment and at first-relapse PCNSL (5-year overall survival rates of 80 and 50%, respectively). The benefit/risk ratio of thiotepa-busulfan/thiotepa-busulfan-cyclophosphamide-ASCT could be improved by considering ASCT earlier in the course of the disease and dose adjustment of the IC.
Published: 2022
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10. Network analysis of large-scale ImmGen and Tabula Muris datasets highlights metabolic diversity of tissue mononuclear phagocytes

Author: Anastasiia Gainullina, Denis A. Mogilenko, Li-Hao Huang, Helena Todorov, Vipin Narang, Ki-Wook Kim, Lim Sheau Yng, Andrew Kent, Baosen Jia, Kumba Seddu, Karen Krchma, Jun Wu, Karine Crozat, Elena Tomasello, Regine Dress, Peter See, Charlotte Scott, Sophie Gibbings, Geetika Bajpai, Jigar V. Desai, Barbara Maier, Sébastien This, Peter Wang, Stephanie Vargas Aguilar, Lucie Poupel, Sébastien Dussaud, Tyng-An Zhou, Veronique Angeli, J. Magarian Blander, Kyunghee Choi, Marc Dalod, Ivan Dzhagalov, Emmanuel L. Gautier, Claudia Jakubzick, Kory Lavine, Michail S. Lionakis, Helena Paidassi, Michael H. Sieweke, Florent Ginhoux, Martin Guilliams, Christophe Benoist, Miriam Merad, Gwendalyn J. Randolph, Alexey Sergushichev, Maxim N. Artyomov, Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Centre d'Immunologie de Marseille - Luminy (CIML), Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Unité de Recherche sur les Maladies Cardiovasculaires, du Métabolisme et de la Nutrition = Research Unit on Cardiovascular and Metabolic Diseases (ICAN), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU)-Institut de Cardiométabolisme et Nutrition = Institute of Cardiometabolism and Nutrition [CHU Pitié Salpêtrière] (IHU ICAN), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), ANR-17-CE15-0007,HSCmemory,Exploration de l'existence d'une fonction et d'une mémoire immunitaire au niveau de la Cellules Souche Hématopoïétique.(2017), ANR-18-CE12-0019,Epromoters,Contrôle de la réponse au stress par une nouvelle classe de promoteurs à activité enhancer(2018), and European Project: 695093,MacAge
Subjects: Cancer Research, single-cell RNA-seq, myeloid cells, [SDV]Life Sciences [q-bio], immunometabolism, CP: Immunology, ImmGen, network analysis, General Biochemistry, Genetics and Molecular Biology, CP: Metabolism, mononuclear phagocytes
Abstract: International audience; The diversity of mononuclear phagocyte (MNP) subpopulations across tissues is one of the key physiologicalcharacteristics of the immune system. Here, we focus on understanding the metabolic variability of MNPsthrough metabolic network analysis applied to three large-scale transcriptional datasets: we introduce (1)an ImmGen MNP open-source dataset of 337 samples across 26 tissues; (2) a myeloid subset of ImmGenPhase I dataset (202 MNP samples); and (3) a myeloid mouse single-cell RNA sequencing (scRNA-seq) data-set (51,364 cells) assembled based on Tabula Muris Senis. To analyze such large-scale datasets, we developa network-based computational approach, genes and metabolites (GAM) clustering, for unbiased identifica-tion of the key metabolic subnetworks based on transcriptional profiles. We define 9 metabolic subnetworksthat encapsulate the metabolic differences within MNP from 38 different tissues. Obtained modules revealthat cholesterol synthesis appears particularly active within the migratory dendritic cells, while glutathionesynthesis is essential for cysteinyl leukotriene production by peritoneal and lung macrophages.
Published: 2023
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11. Disease-specific outcomes after chimeric antigen receptor T-cell therapy

Author: Jean Lemoine, Samuel Vic, Roch Houot, Université Paris Cité (UPCité), CHU Pontchaillou [Rennes], Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), None, Université de Paris (UP), Université de Rennes 1 (UR1), and Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )
Subjects: Cancer Research, Receptors, Chimeric Antigen, (CAR) T-cells, Cell- and Tissue-Based Therapy, [SDV.CAN]Life Sciences [q-bio]/Cancer, 030204 cardiovascular system & hematology, Immunotherapy, Adoptive, B-cell, 3. Good health, 03 medical and health sciences, Treatment Outcome, 0302 clinical medicine, Oncology, immune system diseases, hemic and lymphatic diseases, 030220 oncology & carcinogenesis, Lymphoma, Humans
Abstract: International audience; We compared outcomes of patients with B-cell malignancies treated in clinical trials with the same CD19 chimeric antigen receptor (CAR) T-cells across different indications, including B-cell acute lymphoblastic leukaemia (B-ALL), diffuse large B-cell lymphoma (DLBCL), mantle cell lymphoma (MCL) and follicular lymphoma (FL). We found that for a given CAR T-cell, efficacy and toxicity varied depending on the disease. Overall, we found a low rate of primary resistance in FL, MCL and B-ALL compared with DLBCL. Acute toxicities (cytokine release syndrome and ICANS) appeared to be significantly less severe in FL compared with more aggressive diseases, such as B-ALL, DLBCL and MCL. These observations suggest that each B-cell malignancy harbours specific biology, which may interact differently with CAR T-cell therapy. Thus, CAR T-cells may be tailored differently depending on the type of B-cell malignancy to optimise their efficacy and safety.
Published: 2022
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12. Phase 1/2 study of intratumoral G100 (TLR4 agonist) with or without pembrolizumab in follicular lymphoma

Author: Ahmad S. Halwani, Carlos Panizo, Iris Isufi, Alex F. Herrera, Craig Y. Okada, Elizabeth H. Cull, Bela Kis, Jorge M. Chaves, Nancy L. Bartlett, Weiyun Ai, Luis de la Cruz-Merino, Locke J. Bryan, Roch Houot, Kim Linton, Javier Briones, Ian Chau, Gottfried R. von Keudell, Hailing Lu, Adam Yakovich, Michael Chen, ter Meulen JH, Sergey Yurasov, Frank J. Hsu, Christopher R. Flowers, University of Utah, Clínica Universidad de Navarra [Pamplona], Universidad de Navarra [Pamplona] (UNAV), Yale University School of Medicine, H. Lee Moffitt Cancer Center and Research Institute, North-West University [Potchefstroom] (NWU), University of California [San Francisco] (UCSF), University of California, University of Sevilla, Augusta University, University System of Georgia (USG), CHU Pontchaillou [Rennes], Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Manchester University NHS Foundation Trust (MFT), Memorial Sloan Kettering Cancer Center (MSKCC), The University of Texas M.D. Anderson Cancer Center [Houston], Emory University [Atlanta, GA], Immune Design Corp., Yale School of Medicine [New Haven, Connecticut] (YSM), University of California [San Francisco] (UC San Francisco), University of California (UC), Universidad de Sevilla / University of Sevilla, and Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )
Subjects: 0303 health sciences, Cancer Research, [SDV.CAN]Life Sciences [q-bio]/Cancer, Hematology, Antibodies, Monoclonal, Humanized, 3. Good health, Toll-Like Receptor 4, 03 medical and health sciences, 0302 clinical medicine, follicular lymphoma, Oncology, glucopyranosyl lipid A, 030220 oncology & carcinogenesis, Antineoplastic Combined Chemotherapy Protocols, Humans, TLR4, immunotherapy, pembrolizumab, Lymphoma, Follicular, 030304 developmental biology
Abstract: International audience; Intratumoral injection of G100, a toll-like receptor 4 (TLR4) agonist, was shown pre-clinically to stimulate anti-tumor immune responses and tumor regression. This open-label, multicenter, phase 1/2 trial evaluated the safety, tolerability, and preliminary efficacy of intratumoral G100 injections following localized low-dose radiation in patients with follicular lymphoma (ClinicalTrials.gov #NCT02501473). The study was comprised of a G100 dose escalation (5 or 10 mu g/dose, or 20 mu g/dose for large tumors); a randomized component comparing G100 to G100 plus pembrolizumab; and G100 20 mu g/dose expansion. Adverse events grade >= 3 were uncommon in patients treated with G100, and no unexpected toxicities were observed when combined with pembrolizumab. G100 20 mu g (n = 18) resulted in an overall response rate of 33.3% and abscopal tumor regression in 72.2% of patients. This early-phase study provides a foundation for combining an intratumoral TLR4 agonist with agents to produce immune-mediated responses in follicular lymphoma with limited added toxicity.
Published: 2021
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13. KTE-X19 for relapsed or refractory adult B-cell acute lymphoblastic leukaemia: phase 2 results of the single-arm, open-label, multicentre ZUMA-3 study

Author: Deepa Jeyakumar, Ryan D. Cassaday, Roch Houot, Chaoling Feng, Dimitrios Tzachanis, Maria R. Baer, John M. Rossi, Patrick J. Stiff, Marion Subklewe, Max S. Topp, Behzad Kharabi Masouleh, Bijal D. Shah, Remus Vezan, Martha Arellano, Olalekan O. Oluwole, Aaron C Logan, William G. Wierda, Kristen M. O'Dwyer, Tong Shen, Monique C. Minnema, Jinghui Dong, Daniel J. DeAngelo, Nicolas Boissel, Mehrdad Abedi, Francesca Milletti, Gary J. Schiller, Thibaut Leguay, Armin Ghobadi, Michael R. Bishop, Yi Lin, Jae H. Park, H. Lee Moffitt Cancer Center and Research Institute, Washington University in Saint Louis (WUSTL), Vanderbilt University [Nashville], Helen Diller Family Comprehensive Cancer Center [San Francisco], Hopital Saint-Louis [AP-HP] (AP-HP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), University of Washington [Seattle], CHU Bordeaux [Bordeaux], The University of Chicago Medicine [Chicago], University Hospital of Würzburg, University of California [San Diego] (UC San Diego), University of California, Mayo Clinic [Rochester], University of Rochester [USA], Emory University [Atlanta, GA], University of Maryland [Baltimore], David Geffen School of Medicine [Los Angeles], University of California [Los Angeles] (UCLA), University of California-University of California, State University of New York at New Paltz (SUNY New Paltz), State University of New York (SUNY), Memorial Sloan Kettering Cancer Center (MSKCC), Ludwig-Maximilians-Universität München (LMU), California State University [Sacramento], University Medical Center [Utrecht], The University of Texas M.D. Anderson Cancer Center [Houston], Dana-Farber Cancer Institute [Boston], Loyola University [Chicago], University of California [Irvine] (UCI), Kite (Gilead), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), CHU Pontchaillou [Rennes], University of California (UC), University of California (UC)-University of California (UC), University of California [Irvine] (UC Irvine), and Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )
Subjects: Adult, Male, medicine.medical_specialty, [SDV]Life Sciences [q-bio], medicine.medical_treatment, Population, 030204 cardiovascular system & hematology, Immunotherapy, Adoptive, 03 medical and health sciences, 0302 clinical medicine, Refractory, Recurrence, Precursor B-Cell Lymphoblastic Leukemia-Lymphoma, Internal medicine, medicine, Clinical endpoint, Humans, 030212 general & internal medicine, education, Survival analysis, Aged, Chemotherapy, education.field_of_study, Receptors, Chimeric Antigen, business.industry, General Medicine, Leukapheresis, Middle Aged, Survival Analysis, Minimal residual disease, 3. Good health, Clinical trial, Treatment Outcome, Female, business
Abstract: International audience; BACKGROUND: Despite treatment with novel therapies and allogeneic stem-cell transplant (allo-SCT) consolidation, outcomes in adult patients with relapsed or refractory B-precursor acute lymphoblastic leukaemia remain poor, underlining the need for more effective therapies. METHODS: We report the pivotal phase 2 results of ZUMA-3, an international, multicentre, single-arm, open-label study evaluating the efficacy and safety of the autologous anti-CD19 chimeric antigen receptor (CAR) T-cell therapy KTE-X19 in adult patients with relapsed or refractory B-precursor acute lymphoblastic leukaemia. Patients were enrolled at 25 sites in the USA, Canada, and Europe. Eligible patients were aged 18 years or older, with Eastern Cooperative Oncology Group performance status of 0-1, and morphological disease in the bone marrow (>5% blasts). After leukapheresis and conditioning chemotherapy, patients received a single KTE-X19 infusion (1 × 10(6) CAR T cells per kg bodyweight). The primary endpoint was the rate of overall complete remission or complete remission with incomplete haematological recovery by central assessment. Duration of remission and relapse-free survival, overall survival, minimal residual disease (MRD) negativity rate, and allo-SCT rate were assessed as secondary endpoints. Efficacy and safety analyses were done in the treated population (all patients who received a dose of KTE-X19). This study is registered with ClinicalTrials.gov, NCT02614066. FINDINGS: Between Oct 1, 2018, and Oct 9, 2019, 71 patients were enrolled and underwent leukapheresis. KTE-X19 was successfully manufactured for 65 (92%) patients and administered to 55 (77%). The median age of treated patients was 40 years (IQR 28-52). At the median follow-up of 16·4 months (13·8-19·6), 39 patients (71%; 95% CI 57-82, p
Published: 2021
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14. Du self-control lymphocytaire B aux abords thérapeutiques, quelles voies « B-intrinsèques » pour tempérer les réponses et la mémoire IgE ?

Author: B. Laffleur, O. Dézé, M. Cogné, M. Le Goff, N. Ueda, Z. Dalloul, Suzie Thomas, M. Cahen, Contrôle de la Réponse Immune B et des Lymphoproliférations (CRIBL), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Agence nationale de la recherche, and Jonchère, Laurent
Subjects: Cell death, 0303 health sciences, Allergy, Apoptose, IgE response, Lymphocytes B, Mémoire IgE, Allergie, 03 medical and health sciences, 0302 clinical medicine, IgE memory, Réponse humorale IgE, IgE BCR, Immunology and Allergy, BCR IgE, [SDV.IMM.ALL]Life Sciences [q-bio]/Immunology/Allergology, [SDV.IMM.ALL] Life Sciences [q-bio]/Immunology/Allergology, 030304 developmental biology, 030215 immunology, B lymphocytes
Abstract: Persisting adaptive humoral immunity relies on two key cell types: memory B lymphocytes and long-lived plasma cells. Independently from the specific Ig class they produce, those cells can on one side maintain immunity but on the other side account for dysimmune conditions or hypersensitivity. Stringent control is thus required for both their generation and their survival. Among Ig classes, IgE carries the most powerful pro-inflammatory properties, even at minimal concentration. IgE responses and memory, although protecting against parasites and certain venoms, can inversely mediate devastating effects. The long-term memory of anaphylactic responses against allergens thus stands as the black side of IgE responses, accounting for chronic conditions punctuated with dramatic acute adverse events, some eventually lethal. To manage both their value and their danger, the immune system has evolved with multiple and drastic safeguards around IgE responses, notably ensuring a “B-cell self control” which could now be exploited and reinforced by new specific therapeutic strategies., La persistance de l’immunité humorale adaptative repose particulièrement sur 2 acteurs clés : les lymphocytes B mémoires et les plasmocytes à longue durée de vie. Indépendamment de la classe d’immunoglobuline produite, ces cellules peuvent maintenir tant la protection contre des pathogènes que des manifestations d’hypersensibilité ou d’immunopathologie. Elles requièrent donc une régulation stricte de leur génération comme de leur survie. Parmi toutes les classes d’immunoglobuline produites, l’IgE constitue l’anticorps aux propriétés les plus puissantes, pouvant déclencher des réactions inflammatoires majeures même à doses infimes. Les réponses et la mémoire de classe IgE, au rôle protecteur contre les parasites et certains venins ou toxines, sont conservées par l’évolution chez la quasi-totalité des mammifères. Cependant, les réponses anaphylactiques aux venins peuvent à l’inverse être dramatiques et la mémoire à long terme des sensibilisations et des réactions anaphylactiques contre les allergènes constitue le côté obscur des IgE, responsable de pathologies chroniques ponctuées d’évènements aigus parfois fatals. Face à leur utilité mêlée de dangerosité, l’évolution du système immunitaire a entouré les réponses IgE des cellules B de multiples et stricts garde-fous, un self-control naturel en renfort duquel s’ouvrent aujourd’hui de nouvelles voies thérapeutiques.
Published: 2022
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15. The diversity of the plasmablast signature across species and experimental conditions: A meta‐analysis

Author: Olivier Mignen, Sophie Hillion, Marina Boudigou, Magalie Michée-Cospolite, Laëtitia Le Pottier, Jacques-Olivier Pers, Christophe Jamin, Alexis Grasseau, Divi Cornec, Céline Delaloy, Lymphocyte B et Auto-immunité (LBAI), Université de Brest (UBO)-Institut Brestois Santé Agro Matière (IBSAM), Université de Brest (UBO)-Institut National de la Santé et de la Recherche Médicale (INSERM), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Lymphocytes B, Autoimmunité et Immunothérapies (LBAI), Université de Brest (UBO)-Institut National de la Santé et de la Recherche Médicale (INSERM)-LabEX IGO Immunothérapie Grand Ouest, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Institut Brestois Santé Agro Matière (IBSAM), Université de Brest (UBO), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), and ANR-18-CE15-0002,CascadingPCdiff,Signalisations B et engagement précoce vers la différenciation plasmocytaire(2018)
Subjects: Genetically modified mouse, B-cell differentiation, [SDV]Life Sciences [q-bio], Plasma Cells, Immunology, Mice, Transgenic, Computational biology, Biology, Plasma cell, Transcriptome, Mice, 03 medical and health sciences, 0302 clinical medicine, medicine, Animals, Humans, Immunology and Allergy, Antibody-Producing Cells, Gene, Transcription factor, Glycoproteins, 030304 developmental biology, B-Lymphocytes, 0303 health sciences, Whole Genome Sequencing, Sequence Analysis, RNA, PAX5 Transcription Factor, RNA, Cell Differentiation, Original Articles, Antigens, CD20, meta-analysis, medicine.anatomical_structure, plasmablast, PAX5, Positive Regulatory Domain I-Binding Factor 1, IRF8, transcriptome, 030215 immunology
Abstract: International audience; Antibody-secreting cells (ASC) are divided into two principal subsets, including the long-lived plasma cell (PC) subset residing in the bone marrow and the short-lived subset, also called plasmablast (PB). PB are described as a proliferating subset circulating through the blood and ending its differentiation in tissues. Due to their inherent heterogeneity, the molecular signature of PB is not fully established. The purpose of this study was to decipher a specific PB signature in humans and mice through a comprehensive meta-analysis of different data sets exploring the PB differentiation in both species and across different experimental conditions. The present study used recent analyses using whole RNA sequencing in prdm1-GFP transgenic mice to define a reliable and accurate PB signature. Next, we performed similar analysis using current data sets obtained from human PB and PC. The PB-specific signature is composed of 155 and 113 genes in mouse and human being, respectively. Although only nine genes are shared between the human and mice PB signature, the loss of B-cell identity such as the down-regulation of PAX5, MS4A1, (CD20) CD22 and IL-4R is a conserved feature across species and across the different experimental conditions. Additionally, we observed that the IRF8 and IRF4 transcription factors have a specific dynamic range of expression in human PB. We thus demonstrated that IRF4/IRF8 intranuclear staining was useful to define PB in vivo and in vitro and able to discriminate between atypical PB populations and transient states.
Published: 2021
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16. Combined Platelet and Erythrocyte Salvage: Evaluation of a New Filtration-based Autotransfusion Device

Author: Pascale Gaussem, Alexandre Ouattara, Lucie Skreko, Véronique Picard, Benoit Decouture, Isabelle Gouin-Thibault, Christilla Bachelot-Loza, Charles R. Lefèvre, Alexandre Mansour, Nicolas Nesseler, Mikael Roussel, CHU Pontchaillou [Rennes], i-SEP (i-SEP), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), AP-HP Hôpital Bicêtre (Le Kremlin-Bicêtre), CHU Bordeaux [Bordeaux], Université de Bordeaux (UB), Biologie des maladies cardiovasculaires = Biology of Cardiovascular Diseases, Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), Innovations thérapeutiques en hémostase (IThEM - U1140), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP), Hôpital Européen Georges Pompidou [APHP] (HEGP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO), Nutrition, Métabolismes et Cancer (NuMeCan), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), i-SEP (Nantes, France), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Université de Bordeaux (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Innovations thérapeutiques en hémostase = Innovative Therapies in Haemostasis (IThEM - U1140), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), and Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)
Subjects: Blood transfusion, [SDV]Life Sciences [q-bio], medicine.medical_treatment, Platelet Transfusion, 030204 cardiovascular system & hematology, Blood cell, Andrology, Blood Transfusion, Autologous, 03 medical and health sciences, 0302 clinical medicine, 030202 anesthesiology, medicine, Humans, Platelet, Whole blood, medicine.diagnostic_test, business.industry, Albumin, Complete blood count, Equipment Design, Flow Cytometry, Blood proteins, Anesthesiology and Pain Medicine, medicine.anatomical_structure, France, Erythrocyte Transfusion, business, Filtration, Autotransfusion
Abstract: Background The SAME device (i-SEP, France) is an innovative filtration-based autotransfusion device able to salvage and wash both red blood cells and platelets. This study evaluated the device performances using human whole blood with the hypothesis that the device will be able to salvage platelets while achieving a erythrocyte yield of 80% and removal ratios of 90% for heparin and 80% for major plasma proteins without inducing signification activation of salvaged cells. Methods Thirty healthy human whole blood units (median volume, 478 ml) were diluted, heparinized, and processed by the device in two consecutive treatment cycles. Samples from the collection reservoir and the concentrated blood were analyzed. Complete blood count was performed to measure blood cell recovery rates. Flow cytometry evaluated the activation state and function of platelets and leukocytes. Heparin and plasma proteins were measured to assess washing performance. Results The global erythrocyte yield was 88.1% (84.1 to 91.1%; median [25th to 75th]) with posttreatment hematocrits of 48.9% (44.8 to 51.4%) and 51.4% (48.4 to 53.2%) for the first and second cycles, respectively. Ektacytometry did not show evidence of erythrocyte alteration. Platelet recovery was 36.8% (26.3 to 43.4%), with posttreatment counts of 88 × 109/l (73 to 101 × 109/l) and 115 × 109/l (95 to 135 × 109/l) for the first and second cycles, respectively. Recovered platelets showed a low basal P-selectin expression at 10.8% (8.1 to 15.2%) and a strong response to thrombin-activating peptide. Leukocyte yield was 93.0% (90.1 to 95.7%) with no activation or cell death. Global removal ratios were 98.3% (97.8 to 98.9%), 98.2% (96.9 to 98.8%), and 88.3% (86.6 to 90.7%) for heparin, albumin, and fibrinogen, respectively. The processing times were 4.4 min (4.2 to 4.6 min) and 4.4 min (4.2 to 4.7 min) for the first and second cycles, respectively. Conclusions This study demonstrated the performance of the SAME device. Platelets and red blood cells were salvaged without significant impact on cell integrity and function. In the meantime, leukocytes were not activated, and the washing quality of the device prevented reinfusion of high concentrations of heparin and plasma proteins. Editor’s Perspective What We Already Know about This Topic What This Article Tells Us That Is New
Published: 2021
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17. Plasmablasts derive from CD23– activated B cells after the extinction of IL-4/STAT6 signaling and IRF4 induction

Author: Fabienne Desmots, Thierry Fest, Gersende Caron, Amandine Pignarre, Fabrice Chatonnet, Marion Haas, Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), CHU Pontchaillou [Rennes], Université de Rennes 1 (UR1), and Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )
Subjects: Lymphoma, [SDV]Life Sciences [q-bio], Plasma Cells, Immunology, Naive B cell, Biology, Lymphocyte Activation, Biochemistry, 03 medical and health sciences, 0302 clinical medicine, Immune system, Humans, Cells, Cultured, Interleukin 4, 030304 developmental biology, B-Lymphocytes, 0303 health sciences, Receptors, IgE, CD23, Cell Biology, Hematology, Phenotype, Chromatin, Cell biology, Interferon Regulatory Factors, Interleukin-4, Signal transduction, STAT6 Transcription Factor, Signal Transduction, 030215 immunology, IRF4
Abstract: The terminal differentiation of B cells into antibody-secreting cells (ASCs) is a critical component of adaptive immune responses. However, it is a very sensitive process, and dysfunctions lead to a variety of lymphoproliferative neoplasias including germinal center–derived lymphomas. To better characterize the late genomic events that drive the ASC differentiation of human primary naive B cells, we used our in vitro differentiation system and a combination of RNA sequencing and Assay for Transposase-Accessible Chromatin with high-throughput sequencing (ATAC sequencing). We discovered 2 mechanisms that drive human terminal B-cell differentiation. First, after an initial response to interleukin-4 (IL-4), cells that were committed to an ASC fate downregulated the CD23 marker and IL-4 signaling, whereas cells that maintained IL-4 signaling did not differentiate. Second, human CD23– cells also increased IRF4 protein to levels required for ASC differentiation, but they did that independently of the ubiquitin-mediated degradation process previously described in mice. Finally, we showed that CD23– cells carried the imprint of their previous activated B-cell status, were precursors of plasmablasts, and had a phenotype similar to that of in vivo preplasmablasts. Altogether, our results provide an unprecedented genomic characterization of the fate decision between activated B cells and plasmablasts, which provides new insights into the pathological mechanisms that drive lymphoma biology.
Published: 2021
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18. Un exemple de tolérance : l’immunologie de la grossesse

Author: Karin Tarte, Steve Genebrier, Jonchère, Laurent, Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), and CHU Pontchaillou [Rennes]
Subjects: 030203 arthritis & rheumatology, immune tolerance, [SDV.IMM] Life Sciences [q-bio]/Immunology, [SDV]Life Sciences [q-bio], tolérance immunitaire, grossesse, [SDV] Life Sciences [q-bio], allorecognition, 03 medical and health sciences, alloreconnaissance, 0302 clinical medicine, Rheumatology, [SDV.IMM]Life Sciences [q-bio]/Immunology, pregnancy, 030212 general & internal medicine
Abstract: National audience; La grossesse est longtemps restée un mystère aux yeux des immunologistes : comment concilier le fait qu’une mère soit capable de tolérer son fœtus, par définition incompatible sur le plan immunologique, alors qu’elle rejette une greffe allogénique ? Les études récentes sur l’immunologie de la grossesse ont permis de lever au moins partiellement le voile sur les nombreux mécanismes mis en place en contexte gestationnel pour permettre cette tolérance sélective et temporaire. Toutes les étapes de l’alloreconnaissance T font ainsi l’objet d’une régulation, protégeant le fœtus d’une réaction délétère. Certains acteurs impliqués sont doués de mémoire, ce qui faciliterait le déroulement de grossesses ultérieures issues d’un même père. À noter que le défaut de ces phénomènes actifs peut conduire à des pathologies obstétricales telles que la prééclampsie ou les fausses couches.
Published: 2021
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19. SARS-CoV-2-Induced ARDS Associates with MDSC Expansion, Lymphocyte Dysfunction, and Arginine Shortage

Author: Joelle Dulong, Kieran Pinceaux, Claude Bendavid, Benoit Painvin, Mikael Roussel, Pierre Tattevin, Murielle Gregoire, Yoann Launey, Simon Le Gallou, Jean-Marc Tadié, Audrey Le Bot, Thomas Lebouvier, Berengère Cador-Rousseau, Karin Tarte, Christophe Camus, Adel Maamar, Caroline Moreau, Mathieu Lesouhaitier, Mathieu Lederlin, Michel Cogné, Delphine Rossille, Arnaud Gacouin, Matthieu Revest, Florian Reizine, Yves Le Tulzo, Alice Ballerie, Maelle Latour, Clotilde Verdy, Chard-Hutchinson, Xavier, CHU Pontchaillou [Rennes], Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), University hospital of Rennes, France, Fondation pour la Recherche MedicaleFondation pour la Recherche Medicale, Agence Nationale de la Recherche (ANR, Flash CoViD 'HARMONICOV ') grantFrench National Research Agency (ANR), Fondation de l'Avenir grant (Prix des donateurs, Mutualite Fonction Publique), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), and ANR-20-COVI-0039,HARMONICOV,Immunomonitoring haute définition & caractérisation d'anticorps spécifiques chez des patients CoV-2 critiques versus en rémission(2020)
Subjects: Male, 0301 basic medicine, ARDS, [SDV]Life Sciences [q-bio], medicine.medical_treatment, Lymphocyte, MDSC, Immunology, Arginine, Severity of Illness Index, law.invention, 03 medical and health sciences, 0302 clinical medicine, Cross infection, law, Lymphopenia, medicine, Humans, Immunology and Allergy, Prospective Studies, Lymphocytes, Aged, Mechanical ventilation, Respiratory Distress Syndrome, SARS-CoV-2, business.industry, Myeloid-Derived Suppressor Cells, Mortality rate, Immunosuppression, Middle Aged, medicine.disease, Intensive care unit, 3. Good health, [SDV] Life Sciences [q-bio], Arginase, Pneumonia, 030104 developmental biology, medicine.anatomical_structure, Original Article, Female, Covid-19, business, 030215 immunology
Abstract: Purpose The SARS-CoV-2 infection can lead to a severe acute respiratory distress syndrome (ARDS) with prolonged mechanical ventilation and high mortality rate. Interestingly, COVID-19-associated ARDS share biological and clinical features with sepsis-associated immunosuppression since lymphopenia and acquired infections associated with late mortality are frequently encountered. Mechanisms responsible for COVID-19-associated lymphopenia need to be explored since they could be responsible for delayed virus clearance and increased mortality rate among intensive care unit (ICU) patients. Methods A series of 26 clinically annotated COVID-19 patients were analyzed by thorough phenotypic and functional investigations at days 0, 4, and 7 after ICU admission. Results We revealed that, in the absence of any difference in demographic parameters nor medical history between the two groups, ARDS patients presented with an increased number of myeloid-derived suppressor cells (MDSC) and a decreased number of CD8pos effector memory cell compared to patients hospitalized for COVID-19 moderate pneumonia. Interestingly, COVID-19-related MDSC expansion was directly correlated to lymphopenia and enhanced arginase activity. Lastly, T cell proliferative capacity in vitro was significantly reduced among COVID-19 patients and could be restored through arginine supplementation. Conclusions The present study reports a critical role for MDSC in COVID-19-associated ARDS. Our findings open the possibility of arginine supplementation as an adjuvant therapy for these ICU patients, aiming to reduce immunosuppression and help virus clearance, thereby decreasing the duration of mechanical ventilation, nosocomial infection acquisition, and mortality. Supplementary Information The online version contains supplementary material available at 10.1007/s10875-020-00920-5.
Published: 2021
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20. Homéostasie de la réponse IgA et microbiote

Author: Margaux Hiblot, Batoul Wehbi, Virginie Pascal, Jean-Claude Aldigier, Michel Cogné, Contrôle de la Réponse Immune B et des Lymphoproliférations (CRIBL), Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Etablissement français du sang [Rennes] (EFS Bretagne), Les auteurs ont bénéficié du soutien d’un contrat de l’Agence nationale de la recherche (ANR-16-CE15-0019-01) et de l’Institut national contre le cancer (INCA-12642)., and ANR-16-CE15-0019,Ig-MemImpact,Rôle de la classe des Ig / BCR dans les interactions cellulaires supportant la mémoire immune et impact immunopathologique(2016)
Subjects: 0303 health sciences, biology, [SDV]Life Sciences [q-bio], medicine.medical_treatment, General Medicine, Immunotherapy, medicine.disease, Mucosal vaccine, Inflammatory bowel disease, General Biochemistry, Genetics and Molecular Biology, 3. Good health, 03 medical and health sciences, 0302 clinical medicine, Antigen, Immunology, medicine, biology.protein, Superantigen, Antibody, Mucosal immunity, Homeostasis, 030304 developmental biology, 030215 immunology
Abstract: L’immunité muqueuse s’établit en réponse à un ensemble de microorganismes qui sont surtout commensaux mais aussi, parfois, pathogènes. À cette dualité, les immunoglobulines de classe A (IgA) opposent une balance fonctionnelle allant de la tolérance à la protection, voire à une hyper-inflammation. Des travaux récents ont révélé la liaison d’IgA polyréactives naturelles ou, à l’inverse, d’IgA spécifiquement affines et protectrices, au microbiote commensal, mais aussi à des super-antigènes ou encore à des vaccins muqueux. Différents types de réponse humorale s’associent ainsi pour composer, ensemble, l’homéostasie de l’immunité muqueuse. Leur connaissance devrait ainsi influencer les stratégies de vaccination muqueuse et également les immunothérapies ciblant les maladies inflammatoires chroniques de l’intestin.
Published: 2021
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21. First-in-Human Study of Utomilumab, a 4-1BB/CD137 Agonist, in Combination with Rituximab in Patients with Follicular and Other CD20+ Non-Hodgkin Lymphomas

Author: Craig Davis, Nancy L. Bartlett, Roch Houot, Aron Thall, Ronald Levy, Keith A. Ching, Leslie Popplewell, Sandip Pravin Patel, Adrian Woolfson, Bo Huang, Ying Chen, Xinmeng J. Mu, Ajay K. Gopal, Caron A. Jacobson, Kolette D. Fly, Shibing Deng, University of Washington [Seattle], Stanford Prevention Research Center, Stanford Medicine, Stanford University-Stanford University, CHU Pontchaillou [Rennes], Centre d'Investigation Clinique [Rennes] (CIC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), Etablissement français du sang [Rennes] (EFS Bretagne), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Moores Cancer Center [La Jolla], UC San Diego School of Medicine, City of Hope National Medical Center, Dana-Farber Cancer Institute [Boston], Pfizer Oncology, Washington University School of Medicine in St. Louis, Washington University in Saint Louis (WUSTL), N.A., Université de Rennes (UR)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), School of Medicine [Univ California San Diego] (UC San Diego), University of California [San Diego] (UC San Diego), University of California (UC)-University of California (UC)-University of California [San Diego] (UC San Diego), and University of California (UC)-University of California (UC)
Subjects: 0301 basic medicine, Cancer Research, medicine.medical_specialty, [SDV]Life Sciences [q-bio], Gastroenterology, 03 medical and health sciences, 0302 clinical medicine, Pharmacokinetics, immune system diseases, hemic and lymphatic diseases, Internal medicine, medicine, Adverse effect, CD20, biology, business.industry, medicine.disease, 3. Good health, Lymphoma, 030104 developmental biology, Oncology, Tolerability, 030220 oncology & carcinogenesis, Pharmacodynamics, biology.protein, Rituximab, Refractory Follicular Lymphoma, business, medicine.drug
Abstract: Purpose: In this phase I study (NCT01307267), we evaluated safety, pharmacokinetics, clinical activity, and pharmacodynamics of treatment with utomilumab plus rituximab in patients with relapsed/refractory follicular lymphoma (FL) and other CD20+ non-Hodgkin lymphomas (NHL). Patients and Methods: Primary objectives were to assess treatment safety and tolerability for estimating the MTD, using a modified time-to-event continual reassessment method, and selecting the recommended phase II dose (RP2D). Results: Sixty-seven patients received utomilumab (0.03–10.0 mg/kg every 4 weeks) and rituximab (375 mg/m2 weekly) in the dose-escalation groups or utomilumab (1.2 mg/kg every 4 weeks) plus rituximab in the dose-expansion cohort. No patient experienced dose-limiting toxicity. The MTD for utomilumab in combination with rituximab was not reached and estimated to be ≥10 mg/kg every 4 weeks. The majority of the utomilumab treatment-related adverse events (AE) were grade 1 to 2; the most common AE was fatigue (16.4%). The pharmacokinetics of utomilumab in combination with rituximab was linear in the 0.03 to 10 mg/kg dose range. A low incidence (1.5%) of treatment-induced antidrug antibodies against utomilumab was observed. The objective response rate was 21.2% (95% CI, 12.1%–33.0%) in all patients with NHL, including four complete and 10 partial responses. Analysis of paired biopsies from a relapsed/refractory FL patient with complete response showed increased T-cell infiltration and cytotoxic activity in tumors. Biomarker correlations with outcomes suggested that clinical benefit may be contingent on patient immune function. Conclusions: Utomilumab in combination with rituximab demonstrated clinical activity and a favorable safety profile in patients with CD20+ NHLs.
Published: 2020
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22. Quinacrine inhibits GSTA1 activity and induces apoptosis through G1/S arrest and generation of ROS in human non-small cell lung cancer cell lines

Author: Makhan Kumar, Ansie Martin, Snehal Nirgude, Bibha Chaudhary, Sukanta Mondal, Angshuman Sarkar, Birla Institute of Technology and Science (BITS Pilani), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), and Department of Biotechnology, Government of West Bengal, DBT-WB3374/Department of Science and Technology, Ministry of Science and Technology, India, DST IF140949/2015
Subjects: Oncology, quinacrine, apoptosis, Correction, [SDV.CAN]Life Sciences [q-bio]/Cancer, cell cycle, RhoGTPases, NSCLC, Research Paper
Abstract: International audience; Background Quinacrine (QC) is popular for its anti-malarial activity. It has been reported exhibiting anti-cancerous properties by suppressing nuclear factor-κB and activating p53 signaling; however, its effect on cellular pathways in human non-small cell lung cancer (NSCLC) has not been studied. Materials and Methods Binding of QC with GSTA1 was studied computationally as well as through GST activity assay kit. Cell viability, cell cycle and mitochondrial membrane potential activity were studied using flow cytometry. RT-PCR and western blot were carried out to understand the involvement of various genes at their mRNA as well as protein level. Results QC inhibited the activity of GSTA1 approximately by 40-45% which inhibits cell survival and promotes apoptosis. QC reduced viability of NSCLC cells in a dose-dependent manner. It also causes nuclear fragmentation, G1/S arrest of cell cycle and ROS generation; which along with disruption of mitochondrial membrane potential activity leads to apoptotic fate. Conclusions Results revealed, QC has promising anti-cancer potential against NSCLC cells via inhibition of GSTA1, induction of G1/S arrest and ROS mediated apoptotic signaling. Copyright © Kumar et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License 3.0 (CC BY 3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Published: 2020
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23. Neutrophil function and bactericidal activity against Staphylococcus aureus after cardiac surgery with cardiopulmonary bypass

Author: Caroline Piau, Jean-Marc Tadié, Pierre Tattevin, Mathieu Lesouhaitier, Jean-Philippe Verhoye, Arnaud Gacouin, Aurélien Frérou, Yves Le Tulzo, Erwan Dumontet, Murielle Gregoire, Vincent Cattoir, Matthieu Revest, Valentin Coirier, Antoine Roisne, Erwan Flecher, Karin Tarte, CHU Pontchaillou [Rennes], Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), ARN régulateurs bactériens et médecine (BRM), Fondation de l'Avenir [AP RM 16-016], Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), and Chard-Hutchinson, Xavier
Subjects: Staphylococcus aureus, Neutrophils, medicine.medical_treatment, Phagocytosis, [SDV]Life Sciences [q-bio], Immunology, 030204 cardiovascular system & hematology, Biology, Systemic inflammation, medicine.disease_cause, migration, law.invention, 03 medical and health sciences, 0302 clinical medicine, law, medicine, Cardiopulmonary bypass, Immunology and Allergy, Humans, Cardiac Surgical Procedures, [SDV.MP] Life Sciences [q-bio]/Microbiology and Parasitology, 030304 developmental biology, reactive oxygen species, 0303 health sciences, Cardiopulmonary Bypass, Immunosuppression, Cell Biology, Neutrophil extracellular traps, Staphylococcal Infections, 3. Good health, [SDV] Life Sciences [q-bio], Mediastinitis, adhesion, medicine.anatomical_structure, surgical procedures, operative, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, Bone marrow, medicine.symptom, neutrophils' extracellular traps, Staphylococcus infection
Abstract: Staphylococcus aureus is the main bacterial pathogen encountered in mediastinitis after cardiac surgical procedures; it remains a devastating complication with a high mortality rate. As neutrophils have a primordial role in the defense against staphylococcus infection and cardiopulmonary bypass (CPB) is known to induce immunosuppression, the aim of this study was to investigate CPB impact on neutrophil functions. Patients without known immunosuppression scheduled for cardiac surgery with CPB were included. Bone marrow and blood samples were harvested before, during, and after surgery. Neutrophil phenotypic maturation and functions (migration, adhesion, neutrophil extracellular trap [NET] release, reactive oxygen species (ROS) production, phagocytosis, and bacteria killing) were investigated. Two types of Staphylococcus aureus strains (one from asymptomatic nasal carriage and another from mediastinitis infected tissues) were used to assess in vitro bacterial direct impact on neutrophils. We found that CPB induced a systemic inflammation with an increase in circulating mature neutrophils after surgery. Bone marrow sample analysis did not reveal any modification of neutrophil maturation during CPB. Neutrophil lifespan was significantly increased and functions such as NET release and ROS production were enhanced after CPB whereas bacteria killing and phagocytosis were not impacted. Results were similar with the two different isolates of Staphylococcus aureus. These data suggest that CPB induces a recruitment of mature neutrophils via a demargination process rather than impacting their maturation in the bone marrow. In addition, neutrophils are fully efficient after CPB and do not contribute to postoperative immunosuppression.
Published: 2022
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24. Pre-B cell receptor acts as a selectivity switch for Galectin-1 at the pre-B cell surface

Author: Pauline Touarin, Bastien Serrano, Audrey Courbois, Olivier Bornet, Qian Chen, Lincoln G. Scott, Stéphane J.C. Mancini, James R. Williamson, Corinne Sebban-Kreuzer, Latifa Elantak, Laboratoire d'ingénierie des systèmes macromoléculaires (LISM), Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut de Microbiologie de la Méditerranée (IMM), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), and The Scripps Research Institute [La Jolla, San Diego]
Subjects: [SDV.BBM]Life Sciences [q-bio]/Biochemistry, Molecular Biology
Abstract: Galectins are glycan binding proteins translating the sugar-encoded information of cellular glycoconjugates into many physiological activities including immunity, cell migration, and signaling. During early B lymphocytes (BL) development at the pre-B cell stage, BL express the pre-B cell receptor (pre-BCR) and are supported by mesenchymal stromal cells secreting Galectin-1 (Gal-1). Gal-1 interacts with glycosylated receptors from stromal and pre-B cell surfaces but also with the pre-BCR through a direct carbohydrate-independent contact. How this interaction might interplay with the glycan-decoding function of Gal-1 is unknown. Here, we investigated Gal-1 binding to cell surface ligands using NMR spectroscopy on native membranes. We showed that pre-BCR regulates Gal-1 binding to specifically target α2,3-sialylated receptors on pre-B cells. Upon pre-BCR interaction, dynamic changes resulted in additional contacts with α2,3-sialylated glycans converting Gal-1 from an exo- to an endo-type lectin. Remarkably, this selectivity switch is able to promote pre-B cell survival. Altogether, we shed light on a new mechanism allowing fine-tuning of Galectin specificity at the cell surfaces.
Published: 2022

25. Beneficial effects of citrulline enteral administration on sepsis-induced T cell mitochondrial dysfunction

Author: Florian Reizine, Murielle Grégoire, Mathieu Lesouhaitier, Valentin Coirier, Juliette Gauthier, Céline Delaloy, Elise Dessauge, Florent Creusat, Fabrice Uhel, Arnaud Gacouin, Frédéric Dessauge, Cécile Le Naoures, Caroline Moreau, Claude Bendavid, Yoann Daniel, Kilian Petitjean, Valérie Bordeau, Claire Lamaison, Caroline Piau, Vincent Cattoir, Mikael Roussel, Bernard Fromenty, Christian Michelet, Yves Le Tulzo, Jaroslaw Zmijewski, Ronan Thibault, Michel Cogné, Karin Tarte, Jean-Marc Tadié, Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), CHU Pontchaillou [Rennes], Etablissement Français du Sang Bretagne, EFS, Centre d'Investigation Clinique [Rennes] (CIC), Université de Rennes (UR)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), Physiologie, Environnement et Génétique pour l'Animal et les Systèmes d'Elevage [Rennes] (PEGASE), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Rennes Angers, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Nutrition, Métabolismes et Cancer (NuMeCan), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), ARN régulateurs bactériens et médecine (BRM), Centre National de Référence de la Résistance aux Antibiotiques [CHU Rennes] (CNR), University of Alabama at Birmingham [ Birmingham] (UAB), This work was supported by funding from the Société de Réanimation de Langue Française (SRLF, Bourses Master 2 SRLF). We also thank the animal house Animalerie Rennaise Centre d’Hébergement et d’Expérimentation (ARCHE) platform and H2P2 platform (Structure Fédérative de Recherche [SFR] Biosit), and Aude Bodin for her help with mitochondrial functions analysis., Jonchère, Laurent, and Center of Experimental and Molecular Medicine
Subjects: Immunosuppression Therapy, Multidisciplinary, Myeloid-Derived Suppressor Cells, T-Lymphocytes, [SDV]Life Sciences [q-bio], Biological Availability, T cell, [SDV.CAN]Life Sciences [q-bio]/Cancer, Arginine, Lymphocyte Activation, T-Lymphocytes, Regulatory, Mitochondria, Mice, Inbred C57BL, [SDV] Life Sciences [q-bio], Disease Models, Animal, Mice, [SDV.CAN] Life Sciences [q-bio]/Cancer, Sepsis, Immune Tolerance, Animals, Cytokines, Citrulline, Female
Abstract: International audience; Severe sepsis induces a sustained immune dysfunction associated with poor clinical behavior. In particular, lymphopenia along with increased lymphocyte apoptosis and decreased lymphocyte proliferation, enhanced circulating regulatory T cells (Treg), and the emergence of myeloid-derived suppressor cells (MDSCs) have all been associated with persistent organ dysfunction, secondary infections, and late mortality. The mechanisms involved in MDSC-mediated T cell dysfunction during sepsis share some features with those described in malignancies such as arginine deprivation. We hypothesized that increasing arginine availability would restore T cell function and decrease sepsis-induced immunosuppression. Using a mouse model of sepsis based on cecal ligation and puncture and secondary pneumonia triggered by methicillin-resistant Staphylococcus aureus inoculation, we demonstrated that citrulline administration was more efficient than arginine in increasing arginine plasma levels and restoring T cell mitochondrial function and proliferation while reducing sepsis-induced Treg and MDSC expansion. Because there is no specific therapeutic strategy to restore immune function after sepsis, we believe that our study provides evidence for developing citrulline-based clinical studies in sepsis.
Published: 2022
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26. Pivotal role of PIM2 kinase in plasmablast generation and plasma cell survival, opening new treatment options in myeloma

Author: Haas, Marion, Caron, Gersende, Chatonnet, Fabrice, Manenti, Stephane, Alaterre, Elina, Devin, Julie, Delaloy, Céline, Bertolin, Giulia, Viel, Roselyne, Pignarre, Amandine, Llamas Gutierrez, Francisco, Marchalot, Anne, Decaux, Olivier, Tarte, Karin, Delpy, Laurent, Moreaux, Jerome, Fest, Thierry, Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Microenvironment and B-cells: Immunopathology,Cell Differentiation, and Cancer (MOBIDIC), Université de Rennes (UR)-Etablissement français du sang [Rennes] (EFS Bretagne)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Pontchaillou [Rennes], Centre de Recherches en Cancérologie de Toulouse (CRCT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut de génétique humaine (IGH), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Université de Toulouse (UT), Institut de Génétique et Développement de Rennes (IGDR), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), H2P2 - Histo Pathologie Hight Precision (H2P2), Université de Rennes (UR)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Contrôle de la Réponse Immune B et des Lymphoproliférations (CRIBL), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), This work was funded by an internal grant from the Hematology Laboratory, CHU deRennes, and Région GO Ligue contre le Cancer. MH has received a doctoral fellowshipfrom FHU CAMIn, Ligue Contre le Cancer/Comité d’Ile et Vilaine. AP received a PhDfellowship from Région Bretagne and Ligue Nationale contre le Cancer.Immunofluorescence studies were performed at the Microscopy Rennes ImagingCenter (MRic-ALMF) and in the H2P2 facility, both of which are members of the UMS6480 Biosit (Rennes, France) and the French national France-BioImaginginfrastructure network funded by the French Research Agency (ANR-10-INBS-04). Cellsorting was performed at the Biosit Flow Cytometry and the CytomeTRI cell sortingfacilities (UMS6480 Biosit). We are indebted to the Centre de Ressources Biologiques(CRB)-Santé (BB-0033-00056, http://www.crbsante-rennes.com) at Rennes UniversityMedical Center for its help with processing biological samples, and we also thankseveral clinicians and patients for providing samples for research purposes. We thankthe MMRF for sharing the RNA sequencing and clinical data for patients enrolled in theCoMMpass study via the MMRF genomics portal., and ANR-10-INBS-0004,France-BioImaging,Développment d'une infrastructure française distribuée coordonnée(2010)
Subjects: [SDV]Life Sciences [q-bio], [SDV.IMM]Life Sciences [q-bio]/Immunology, [SDV.CAN]Life Sciences [q-bio]/Cancer, Immunotherapy, humanities, Immunobiology
Abstract: International audience; The differentiation of B cells into plasmablasts (PBs) and then plasma cells (PCs) is associated with extensive cell reprogramming and new cell functions. By using specific inhibition strategies (including a novel morpholino RNA antisense approach), we found that early, sustained upregulation of the proviral integrations of Moloney virus 2 (PIM2) kinase is a pivotal event during human B cell in vitro differentiation and then continues in mature normal and malignant PCs in the bone marrow. In particular, PIM2 sustained the G1/S transition by acting on CDC25A and p27Kip1 and hindering caspase 3-driven apoptosis through BAD phosphorylation and cytoplasmic stabilization of p21Cip1. In PCs, interleukin-6 triggered PIM2 expression, resulting in anti-apoptotic effects on which malignant PCs were particularly dependent. In multiple myeloma, pan-PIM and MCL1 inhibitors displayed synergistic activity. Our results highlight a cell-autonomous function that links kinase activity to the PBs’ newly acquired secretion ability and the adaptability observed in both normal and malignant PCs, and finally should prompt the reconsideration of PIM2 as a therapeutic target in multiple myeloma.
Published: 2022
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27. Prolonged Remissions After Nivolumab Plus Gemcitabine/Oxaliplatin in Relapsed/Refractory T-cell Lymphoma

Author: Roch Houot, Viola Poeschel, Bettina Altmann, Stephanie Angel, Lorenz Thurner, Thomas Illmer, Marc Andre, Martin Dreyling, Hervé Maisonneuve, Hervé Tilly, Stephanie Mayer, Olivier Casasnovas, Steven Le Gouill, Fritz Offner, Guillaume Cartron, Andrea Kerkhoff, Thomas Weber, Joerg Hoffmann, Marita Ziepert, Wolfram Klapper, Emmanuel Itti, Dirk Hellwig, Giorgi Natchkebia, Laurence de Leval, Andreas Rosenwald, Corinne Haioun, Laurent Dercle, Philippe Gaulard, Gerhard Held, Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Microenvironment and B-cells: Immunopathology,Cell Differentiation, and Cancer (MOBIDIC), Université de Rennes (UR)-Etablissement français du sang [Rennes] (EFS Bretagne)-Institut National de la Santé et de la Recherche Médicale (INSERM), Saarland University [Saarbrücken], Universität Leipzig, Medizinische Klinik und Poliklinik III [Bonn, Germany], Universitätsklinikum Bonn (UKB), CHU UCL Namur, Centre Hospitalier Départemental - Hôpital de La Roche-sur-Yon (CHD Vendée), Centre de Lutte Contre le Cancer Henri Becquerel Normandie Rouen (CLCC Henri Becquerel), University Hospital Regensburg, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Centre hospitalier universitaire de Nantes (CHU Nantes), Ghent University Hospital, CHU Montpellier, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), University Hospital Münster - Universitaetsklinikum Muenster [Germany] (UKM), Martin-Luther-Universität Halle Wittenberg (MLU), Philipps Universität Marburg = Philipps University of Marburg, University Medical Center of Schleswig–Holstein = Universitätsklinikum Schleswig-Holstein (UKSH), Kiel University, CHU Henri Mondor [Créteil], Lausanne University Hospital, Université de Lausanne = University of Lausanne (UNIL), Julius-Maximilians-Universität Würzburg (JMU), Columbia University Irving Medical Center (CUIMC), Universität Leipzig [Leipzig], CHU Henri Mondor, and Chard-Hutchinson, Xavier
Subjects: [SDV] Life Sciences [q-bio], Letter, [SDV]Life Sciences [q-bio], PD-1, Medicine and Health Sciences, Diseases of the blood and blood-forming organs, Hematology, RC633-647.5, ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2022
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28. Molecular networking for drug toxicities studies: The case of hydroxychloroquine in covid-19 patients

Author: Pierre-Jean Ferron, Brendan Le Daré, Julie Bronsard, Clara Steichen, Elodie Babina, Romain Pelletier, Thierry Hauet, Isabelle Morel, Karin Tarte, Florian Reizine, Bruno Clément, Bernard Fromenty, Thomas Gicquel, Centre Hospitalier Universitaire [Rennes], Nutrition, Métabolismes et Cancer (NuMeCan), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), CHU Pontchaillou [Rennes], Ischémie Reperfusion en Transplantation d’Organes Mécanismes et Innovations Thérapeutiques ( IRTOMIT), Université de Poitiers-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre hospitalier universitaire de Poitiers (CHU Poitiers), Microenvironment and B-cells: Immunopathology,Cell Differentiation, and Cancer (MOBIDIC), Université de Rennes (UR)-Etablissement français du sang [Rennes] (EFS Bretagne)-Institut National de la Santé et de la Recherche Médicale (INSERM), Institut National de la Santé et de la Recherche Médicale, Inserm, Agence Nationale de Sécurité du Médicament et des Produits de Santé, ANSM, HAL UR1, Admin, Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Poitiers, Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Rennes 1 (UR1), and Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)
Subjects: Male, [SDV]Life Sciences [q-bio], 0302 clinical medicine, Risk Factors, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Biology (General), Correlation of Data, Spectroscopy, [SDV.MHEP.ME] Life Sciences [q-bio]/Human health and pathology/Emerging diseases, 0303 health sciences, [SDV.MHEP.ME]Life Sciences [q-bio]/Human health and pathology/Emerging diseases, Fatty Acids, General Medicine, Middle Aged, 3. Good health, Computer Science Applications, Chemistry, [SDV.SP.PHARMA] Life Sciences [q-bio]/Pharmaceutical sciences/Pharmacology, 030220 oncology & carcinogenesis, [SDV.MHEP.MI] Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Female, Chemical and Drug Induced Liver Injury, HepaRG, Metabolic Networks and Pathways, Hydroxychloroquine, Drug-Related Side Effects and Adverse Reactions, QH301-705.5, Cell Survival, Antiviral Agents, Catalysis, Article, Cell Line, Inorganic Chemistry, 03 medical and health sciences, Fatty liver, Humans, Obesity, Physical and Theoretical Chemistry, Molecular networking, QD1-999, Molecular Biology, 030304 developmental biology, Aged, Drug metabolism, Organic Chemistry, COVID-19, COVID-19 Drug Treatment, Linear Models, [SDV.SP.PHARMA]Life Sciences [q-bio]/Pharmaceutical sciences/Pharmacology, molecular networking, hydroxychloroquine, drug metabolism, fatty liver
Abstract: International audience; Using drugs to treat COVID-19 symptoms may induce adverse effects and modify patient outcomes. These adverse events may be further aggravated in obese patients, who often present different illnesses such as metabolic-associated fatty liver disease. In Rennes University Hospital, several drug such as hydroxychloroquine (HCQ) have been used in the clinical trial HARMONICOV to treat COVID-19 patients, including obese patients. The aim of this study is to determine whether HCQ metabolism and hepatotoxicity are worsened in obese patients using an in vivo/in vitro approach. Liquid chromatography high resolution mass spectrometry in combination with untargeted screening and molecular networking were employed to study drug metabolism in vivo (patient’s plasma) and in vitro (HepaRG cells and RPTEC cells). In addition, HepaRG cells model were used to reproduce pathophysiological features of obese patient metabolism, i.e., in the condition of hepatic steatosis. The metabolic signature of HCQ was modified in HepaRG cells cultured under a steatosis condition and a new metabolite was detected (carboxychloroquine). The RPTEC model was found to produce only one metabolite. A higher cytotoxicity of HCQ was observed in HepaRG cells exposed to exogenous fatty acids, while neutral lipid accumulation (steatosis) was further enhanced in these cells. These in vitro data were compared with the biological parameters of 17 COVID-19 patients treated with HCQ included in the HARMONICOV cohort. Overall, our data suggest that steatosis may be a risk factor for altered drug metabolism and possibly toxicity of HCQ. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Published: 2022
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29. Du self-control lymphocytaire B aux abords thérapeutiques, quelles voies « B-intrinsèques » pour tempérer les réponses et la mémoire IgE ?

Author: Cogné, Michel, Dalloul, Z., Dézé, O., Le Goff, M., Thomas, S., Cahen, M., Ueda, N., Laffleur, B., Contrôle de la Réponse Immune B et des Lymphoproliférations (CRIBL), Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), and Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )
Subjects: Cell death, Allergie, IgE memory, Allergy, Réponse humorale IgE, Apoptose, IgE BCR, BCR IgE, [SDV.IMM.ALL]Life Sciences [q-bio]/Immunology/Allergology, IgE response, Lymphocytes B, B lymphocytes, Mémoire IgE
Abstract: International audience; Persisting adaptive humoral immunity relies on two key cell types: memory B lymphocytes and long-lived plasma cells. Independently from the specific Ig class they produce, those cells can on one side maintain immunity but on the other side account for dysimmune conditions or hypersensitivity. Stringent control is thus required for both their generation and their survival. Among Ig classes, IgE carries the most powerful pro-inflammatory properties, even at minimal concentration. IgE responses and memory, although protecting against parasites and certain venoms, can inversely mediate devastating effects. The long-term memory of anaphylactic responses against allergens thus stands as the black side of IgE responses, accounting for chronic conditions punctuated with dramatic acute adverse events, some eventually lethal. To manage both their value and their danger, the immune system has evolved with multiple and drastic safeguards around IgE responses, notably ensuring a “B-cell self control” which could now be exploited and reinforced by new specific therapeutic strategies.; La persistance de l’immunité humorale adaptative repose particulièrement sur 2 acteurs clés : les lymphocytes B mémoires et les plasmocytes à longue durée de vie. Indépendamment de la classe d’immunoglobuline produite, ces cellules peuvent maintenir tant la protection contre des pathogènes que des manifestations d’hypersensibilité ou d’immunopathologie. Elles requièrent donc une régulation stricte de leur génération comme de leur survie. Parmi toutes les classes d’immunoglobuline produites, l’IgE constitue l’anticorps aux propriétés les plus puissantes, pouvant déclencher des réactions inflammatoires majeures même à doses infimes. Les réponses et la mémoire de classe IgE, au rôle protecteur contre les parasites et certains venins ou toxines, sont conservées par l’évolution chez la quasi-totalité des mammifères. Cependant, les réponses anaphylactiques aux venins peuvent à l’inverse être dramatiques et la mémoire à long terme des sensibilisations et des réactions anaphylactiques contre les allergènes constitue le côté obscur des IgE, responsable de pathologies chroniques ponctuées d’évènements aigus parfois fatals. Face à leur utilité mêlée de dangerosité, l’évolution du système immunitaire a entouré les réponses IgE des cellules B de multiples et stricts garde-fous, un self-control naturel en renfort duquel s’ouvrent aujourd’hui de nouvelles voies thérapeutiques.
Published: 2022
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30. Toward a Better Classification System for NK-LGL Disorders

Author: Gaëlle Drillet, Cédric Pastoret, Aline Moignet, Thierry Lamy, Tony Marchand, HAL UR1, Admin, CHU Pontchaillou [Rennes], Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Centre d'Investigation Clinique [Rennes] (CIC), Université de Rennes (UR)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), and TM is supported by the 'Association pour le Développement de l’Hématologie Oncologie' (ADHO).
Subjects: STAT3, large granular lymphocyte leukemia, [SDV] Life Sciences [q-bio], Cancer Research, chronic lymphoproliferative disorders of NK cells, Oncology, KIR phenotype, [SDV]Life Sciences [q-bio], Neoplasms. Tumors. Oncology. Including cancer and carcinogens, NK cells, RC254-282
Abstract: International audience; Large granular lymphocytic leukemia is a rare lymphoproliferative disorder characterized by a clonal expansion of T-lineage lymphocyte or natural killer (NK) cells in 85 and 15% of cases respectively. T and NK large granular leukemia share common pathophysiology, clinical and biological presentation. The disease is characterized by cytopenia and a frequent association with autoimmune manifestations. Despite an indolent course allowing a watch and wait attitude in the majority of patients at diagnosis, two third of the patient will eventually need a treatment during the course of the disease. Unlike T lymphocyte, NK cells do not express T cell receptor making the proof of clonality difficult. Indeed, the distinction between clonal and reactive NK-cell expansion observed in several situations such as autoimmune diseases and viral infections is challenging. Advances in our understanding of the pathogenesis with the recent identification of recurrent mutations provide new tools to prove the clonality. In this review, we will discuss the pathophysiology of NK large granular leukemia, the recent advances in the diagnosis and therapeutic strategies.
Published: 2022
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31. Obinutuzumab plus lenalidomide in advanced, previously untreated follicular lymphoma in need of systemic therapy: a LYSA study

Author: Emmanuel Bachy, Roch Houot, Pierre Feugier, Krimo Bouabdallah, Reda Bouabdallah, Emmanuelle Nicolas Virelizier, Marie Maerevoet, Christophe Fruchart, Sylvia Snauwaert, Steven Le Gouill, Jean-Pierre Marolleau, Lysiane Molina, Cécile Moluçon-Chabrot, Catherine Thieblemont, Hervé Tilly, Fontanet Bijou, Corinne Haioun, Eric Van den Neste, Bettina Fabiani, Michel Meignan, Guillaume Cartron, Gilles Salles, Olivier Casasnovas, Franck Morschhauser, Centre Hospitalier Lyon Sud [CHU - HCL] (CHLS), Hospices Civils de Lyon (HCL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon, Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Microenvironment and B-cells: Immunopathology,Cell Differentiation, and Cancer (MOBIDIC), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Etablissement français du sang [Rennes] (EFS Bretagne)-Institut National de la Santé et de la Recherche Médicale (INSERM), French Innovative Leukemia Organization (Filo), CHU Bordeaux [Bordeaux], Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC), Centre Léon Bérard [Lyon], Institut Jules Bordet [Bruxelles], Faculté de Médecine [Bruxelles] (ULB), Université libre de Bruxelles (ULB)-Université libre de Bruxelles (ULB), CH Dunkerque, Department of ENT surgery, AZ Sint Jan Brugge Oostende, Service d'Hématologie Biologique [CHU Nantes], Centre hospitalier universitaire de Nantes (CHU Nantes), L’Héma-NexT [UNIV Nantes] (i-Site NexT), Université de Nantes (UN), Microenvironnement des niches tumorales (CNRS GDR 3697 Micronit ), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre de Recherche en Cancérologie et Immunologie Intégrée Nantes-Angers (CRCI2NA ), Université d'Angers (UA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Nantes Université - UFR de Médecine et des Techniques Médicales (Nantes Univ - UFR MEDECINE), Nantes Université - pôle Santé, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - pôle Santé, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ), CHU Amiens-Picardie, HEMATIM - Hématopoïèse et immunologie - UR UPJV 4666 (HEMATIM), Université de Picardie Jules Verne (UPJV)-CHU Amiens-Picardie-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Grenoble, Université Joseph Fourier - Grenoble 1 (UJF)-CHU Grenoble, Service d’Hématologie Biologique [CHU Clermont-Ferrand], CHU Gabriel Montpied [Clermont-Ferrand], CHU Clermont-Ferrand-CHU Clermont-Ferrand-CHU Estaing [Clermont-Ferrand], CHU Clermont-Ferrand, Hopital Saint-Louis [AP-HP] (AP-HP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), NF-kappaB, Différenciation et Cancer (OncokappaB (URP_7324)), Université Paris Cité (UPCité), Génomique et Médecine Personnalisée du Cancer et des Maladies Neuropsychiatriques (GPMCND), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre de Lutte Contre le Cancer Henri Becquerel Normandie Rouen (CLCC Henri Becquerel), Institut Bergonié [Bordeaux], UNICANCER, Hôpital Henri Mondor, Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Cliniques Universitaires Saint-Luc [Bruxelles], Service de neurophysiologie [CHU Saint-Antoine], CHU Saint-Antoine [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), LYSA Imaging (Créteil) (LYSA-IM), CHU Henri Mondor, CHU Montpellier, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Weill Medical College of Cornell University [New York], Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), CHU Lille, The study was funded by the LYSARC, and financially supported in part by investigator-initiated study grants from Celgene/BMS and Roche., Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Université de Rennes (UR)-Etablissement français du sang [Rennes] (EFS Bretagne)-Institut National de la Santé et de la Recherche Médicale (INSERM), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), CHU Henri Mondor [Créteil], Microenvironnement des niches tumorales [UNIV Tours] (CNRS GDR 3697 MicroNiT), Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS), Université Paris Cité (UPC), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), UCL - SSS/IREC/MIRO - Pôle d'imagerie moléculaire, radiothérapie et oncologie, UCL - (SLuc) Centre du cancer, UCL - (SLuc) Service de gastro-entérologie, and UCL - (SLuc) Unité d'oncologie médicale
Subjects: Adult, Neutropenia, Adolescent, [SDV]Life Sciences [q-bio], Immunology, [SDV.CAN]Life Sciences [q-bio]/Cancer, Cell Biology, Hematology, Antibodies, Monoclonal, Humanized, Biochemistry, Treatment Outcome, Antineoplastic Combined Chemotherapy Protocols, Humans, Lenalidomide, Lymphoma, Follicular
Abstract: Obinutuzumab and lenalidomide (referred to as the GALEN combination) is an active immunomodulatory combination with a manageable safety profile in multiple types of lymphoma. We report efficacy and safety results for the phase 2 GALEN study in previously untreated patients with advanced follicular lymphoma (FL). Eligible patients aged ≥18 years had an Eastern Cooperative Oncology Group performance status ≤2 and high-tumor burden, grade 1 to 3a FL. Induction treatment was obinutuzumab (1000 mg IV, days 8, 15, and 22, cycle 1; day 1, cycles 2-6) plus lenalidomide (20 mg/d, days 1-21, cycle 1; days 2-22, cycles 2-6) for six 28-day cycles. Maintenance included obinutuzumab (1000 mg every 2 cycles) plus lenalidomide (10 mg, days 2-22) for ≤12 cycles (year 1) followed by obinutuzumab (1000 mg every 56 days) for 6 cycles (year 2). The primary end point was complete response rate (CRR) after induction per the 1999 International Working Group criteria. From October 2015 to February 2017, a total of 100 patients were enrolled. CRR after induction was 47%, and the overall response rate (ORR) was 92%. Post hoc analyses per the 2014 Lugano classification, including patients with missing bone marrow assessments, identified an additional 13 patients fulfilling CRR criteria, resulting in a complete metabolic response of 80% and an ORR of 94%. At a median follow-up of 3.7 years, 3-year progression-free survival and overall survival were 82% and 94%, respectively. The most common adverse event was neutropenia (48% any grade; 47% grade ≥3). Only 2% of patients presented with febrile neutropenia; others were mainly grade ≤2. No other specific grade ≥3 toxicity occurred at a frequency >3%. Overall, these results showed promising clinical efficacy for the chemotherapy-free GALEN backbone in previously untreated patients with high tumor burden FL. Except for neutropenia, the safety profile of the combination is remarkable. The study was registered at clinicaltrials.gov as #NCT01582776.
Published: 2022
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32. Rôle des cellules stromales périostéales dans la régénération de la niche hématopoïétique

Author: Marchand, Tony, Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Université de Rennes, and Thierry Lamy de la Chapelle
Subjects: Bone marrow regeneration, Skeletal stem cell, Périoste, Niche hématopoïétique, Periosteum, Cellule stromale mésenchymateuse, Hematopoietic niche, Régénération médullaire, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: Functional stromal cells are known to be important for bone marrow regeneration after chemotherapy or radiation induced injury to avoid prolonged myelosuppression. However, how the cells within the bone marrow are repopulated post injury is unknown. We have developed a whole bone transplantation model that mimics the initial bone marrow necrosis and fatty infiltration seen after bone marrow injury and the gradual recovery. Unexpectedly, we found that skeletal stem cells from the periosteum are able to migrate into the bone marrow, thereby contributing to bone marrow regeneration. These periosteal skeletal stem cells also give rise to bone marrow mesenchymal stem cells with the expression of hematopoietic stem cell niche factors, such as Cxcl12 and Stem cell factor. The observation that bone marrow mesenchymal stem cells, but not periosteal skeletal stem cells, die during the transplantation process suggests that periosteal skeletal stem cells are more resistant to stress compared to bone marrow mesenchymal stem cells in part due to a more quiescent phenotype. Our study uncovers a new function of periosteal stem cells, highlighting their major plasticity and the role of the periosteum as a potential bone marrow mesenchymal stem cells source following bone marrow injury.; La régénération de la moelle osseuse après chimiothérapie ou irradiation nécessite l'existence de cellules stromales fonctionnelles. Néanmoins, les processus impliqués dans la régénération des cellules stromales après agression restent à ce jour peu connus. Dans ce travail nous avons développé et caractérisé un modèle murin d’étude de la régénération de la niche hématopoïétique basé sur la greffe d'un fémur intact en sous-cutané. Après une destruction initiale de la moelle osseuse, la cavité médullaire est le siège d’une infiltration par des adipocytes puis d’une régénération progressive avec la réapparition d'une niche hématopoïétique fonctionnelle. De manière inattendue, nous avons identifié des cellules stromales localisées au niveau du périoste capables de migrer dans la moelle osseuse et de contribuer à la régénération du compartiment stromal médullaire. Les cellules stromales issues du périoste sont capables de d’acquérir des caractéristiques de cellules souches mésenchymateuses médullaires avec notamment l'expression de cytokines majeures pour l'hématopoïèse comme Cxcl12 et Stem cell factor. L’observation que les cellules stromales du périoste, contrairement aux cellules stromales médullaires, survivent à la procédure de greffe suggère que ces cellules sont plus résistantes au stress possiblement en lien avec une importante quiescence. En conclusion, notre travail met en évidence une nouvelle fonction des cellules stromales du périoste soulignant leur importante plasticité et le rôle potentiel du périoste comme une source de cellules stromales mésenchymateuses après agression de la moelle osseuse.
Published: 2021

33. Fam72a enforces error-prone DNA repair during antibody diversification

Author: Michel Cogné, Brice Laffleur, Ophelie Martin, Bernardo Reina-San-Martin, Mélanie Rogier, Isabelle Robert, Jacques Moritz, Katia Capitani, Arthur Abello, Eric Pinaud, Florence Jouan, Ludovic Deriano, Anne-Sophie Thomas-Claudepierre, Vincent Heyer, Evi Soutoglou, Karin Tarte, Chloé Lescale, Morgane Thomas, Silvestro G. Conticello, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Intégrité du génome, immunité et cancer - Genome integrity, Immunity and Cancer, Institut Pasteur [Paris], Physiopathologie du système immunitaire (Inserm U1223), Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Pasteur [Paris], University of Sussex, Università degli Studi di Siena = University of Siena (UNISI), Contrôle de la Réponse Immune B et des Lymphoproliférations (CRIBL), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), This study was supported by grants from the Fondation Recherche Médicale (Equipe FRM EQU201903007818 to B.R.-S.-M.), Institut National du Cancer (INCa_13852 to L.D. and B.R.-S.-M.), Fondation ARC (ARCPJA32020060002061 to B.R.-S.-M.), the Ligue Nationale contre le Cancer (Equipe labellisée to L.D.) and by the grant ANR-10-LABX-0030-INRT, a French state fund managed by the Agence Nationale de la Recherche under the program Investissements d’Avenir labelled ANR-10-IDEX-0002-02., ANR-10-LABX-0030,INRT,Integrative Biology : Nuclear dynamics- Regenerative medicine - Translational medicine(2010), ANR-10-IDEX-0002,UNISTRA,Par-delà les frontières, l'Université de Strasbourg(2010), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Institut Pasteur [Paris] (IP), Institut Pasteur [Paris] (IP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), and Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )
Subjects: Male, DNA damage, DNA repair, Somatic hypermutation, DNA Mismatch Repair, 03 medical and health sciences, chemistry.chemical_compound, Mice, 0302 clinical medicine, Cytidine deamination, Animals, Uracil, 030304 developmental biology, 0303 health sciences, B-Lymphocytes, Multidisciplinary, Genome, Mutagenesis, Immunoglobulin Class Switching, 3. Good health, Cell biology, Immunoglobulin Switch Region, Up-Regulation, chemistry, [SDV.IMM.IA]Life Sciences [q-bio]/Immunology/Adaptive immunology, 030220 oncology & carcinogenesis, Uracil-DNA glycosylase, Mutation, DNA mismatch repair, Female, Somatic Hypermutation, Immunoglobulin, CRISPR-Cas Systems, DNA
Abstract: Efficient humoral responses rely on DNA damage, mutagenesis and error-prone DNA repair. Diversification of B cell receptors through somatic hypermutation and class-switch recombination are initiated by cytidine deamination in DNA mediated by activation-induced cytidine deaminase (AID)1 and by the subsequent excision of the resulting uracils by uracil DNA glycosylase (UNG) and by mismatch repair proteins1–3. Although uracils arising in DNA are accurately repaired1–4, how these pathways are co-opted to generate mutations and double-strand DNA breaks in the context of somatic hypermutation and class-switch recombination is unknown1–3. Here we performed a genome-wide CRISPR–Cas9 knockout screen for genes involved in class-switch recombination and identified FAM72A, a protein that interacts with the nuclear isoform of UNG (UNG2)5 and is overexpressed in several cancers5. We show that the FAM72A–UNG2 interaction controls the levels of UNG2 and that class-switch recombination is defective in Fam72a−/− B cells due to the upregulation of UNG2. Moreover, we show that somatic hypermutation is reduced in Fam72a−/− B cells and that its pattern is skewed upon upregulation of UNG2. Our results are consistent with a model in which FAM72A interacts with UNG2 to control its physiological level by triggering its degradation, regulating the level of uracil excision and thus the balance between error-prone and error-free DNA repair. Our findings have potential implications for tumorigenesis, as reduced levels of UNG2 mediated by overexpression of Fam72a would shift the balance towards mutagenic DNA repair, rendering cells more prone to acquire mutations. FAM72A interacts with UNG2 to regulate the balance between error-prone and error-free DNA repair.
Published: 2021
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34. Bendamustine-EAM versus R-BEAM after high-dose cytarabine-based induction in newly diagnosed patients with mantle cell lymphoma, a LYSA retrospective study

Author: Domitille Costes-Tertrais, Thomas Hueso, Thomas Gastinne, Catherine Thieblemont, Lucie Oberic, Krimo Bouabdallah, Sylvain Garciaz, Emmanuelle Tchernonog, Caroline Dartigeas, Vincent Ribrag, Patrick Fogarty, René-Olivier Casasnovas, Roch Houot, Caroline Delette, Sandra Malak, Luc-Matthieu Fornecker, Remy Gressin, Gandhi Damaj, Steven Le Gouill, Centre hospitalier universitaire de Nantes (CHU Nantes), Université Sorbonne Paris Nord, Hôpital Avicenne [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Université Paris Diderot, Sorbonne Paris Cité, Paris, France, Université Paris Diderot - Paris 7 (UPD7), Université Paris Descartes - Paris 5 (UPD5), Hopital Saint-Louis [AP-HP] (AP-HP), Institut Universitaire du Cancer de Toulouse - Oncopole (IUCT Oncopole - UMR 1037), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-CHU Toulouse [Toulouse]-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Bordeaux [Bordeaux], Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC), Hôpital Lapeyronie [Montpellier] (CHU), CHU Trousseau [Tours], Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Institut Gustave Roussy (IGR), Département d'hématologie [Gustave Roussy], The Lymphoma Academic Research Organisation [Lyon] (LYSARC), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Agro Dijon, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), CHU Pontchaillou [Rennes], Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), CHU Amiens-Picardie, Hôpital René HUGUENIN (Saint-Cloud), CHU Strasbourg, Centre Hospitalier Universitaire [Grenoble] (CHU), CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Institut National de la Santé et de la Recherche Médicale (INSERM), and Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )
Subjects: Adult, Transplantation, [SDV]Life Sciences [q-bio], Cytarabine, Hematopoietic Stem Cell Transplantation, Hematology, Lymphoma, Mantle-Cell, Carmustine, Transplantation, Autologous, Antineoplastic Combined Chemotherapy Protocols, Bendamustine Hydrochloride, Humans, Melphalan, Etoposide, Retrospective Studies
Abstract: International audience; Cytarabine-based immuno-chemotherapy followed by autologous stem cell transplantation (ASCT) consolidation is standard of care for fit patients with Mantle Cell Lymphoma (MCL). BEAM (Carmustine, Etoposide, Aracytine, Melphalan) is among the most frequently used conditioning regimen. Studies comparing BEAM with Bendamustine-EAM (BeEAM) have suggested that patients treated with BeEAM have a better progression-free survival (PFS). We performed a cross-study analysis to better evaluate BeEAM. Thirty-five patients from a retrospective study who received R-DHAP/BeEAM were compared to 245 patients from the LyMa trial (NCT00921414) who all received R-DHAP followed by R-BEAM. PFS and Overall Survival (OS) were estimated using Kaplan-Meier methods. At 2 years there was no difference between R-BEAM and BeEAM in either PFS (84.9% versus 87.9%; p = 0.95) or OS (91.8% versus 94.2%; p = 0.30). Analyses were repeated on a propensity score to reduce biases. Each patient from the BeEAM cohort (n = 30) was matched to three patients from the R-BEAM cohort (n = 90) for age, sex, MIPI score, pre-transplant status disease and rituximab maintenance (RM). PFS and OS at 2 years remained similar between R-BEAM and BeEAM with more renal toxicity in BeEAM group. MCL patients who received R-DHAP induction before ASCT have similar outcome after R-BEAM or BeEAM conditioning regimen.
Published: 2021
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35. Interactions des cellules tumorales B et des cellules stromales dans le lymphome folliculaire : une question menée par des concepts d'hétérogénéité tumorale et micro environnementale

Author: Lamaison, Claire, Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Université de Rennes, and Karin Tarte
Subjects: Interactions, Stroma, Lymphome folliculaire, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, Follicular lymphoma
Abstract: Follicular lymphoma is the most prototypical B-cell lymphoma that depends on a specific tumor microenvironment, including cancer-associated fibroblasts (CAFs) arising from the reprogramming of lymphoid stromal cells or their precursors in the lymph node and bone marrow. Stromal cells in follicular lymphoma directly support the growth of malignant B cells and orchestrate the tumor niche by contributing, through a bidirectional dialogue, to the recruitment and polarization of other immune subpopulations. A better understanding of the signaling pathways, molecular mechanisms and kinetics of stromal cell remodeling would be instrumental in defining new predictive markers and therapeutic approaches in this still lethal malignancy. In vitro models capturing the biomechanical forces, cellular microenvironment and spatial organization of B-cell lymphomas remain scarce, while all these parameters are key determinants of lymphomagenesis and drug resistance. Using a microfluidic method based on cell encapsulation in permeable alginate beads, we developed a new 3D model incorporating lymphoma B cells, extracellular matrix and/or tonsil stromal cells. We showed that B-cells were able to form cohesive spheroids resulting from the overexpression of extracellular matrix components. Furthermore, in this model, stromal cells self-organize to initiate tumor cell proliferation. The 3D-culture induced resistance to the classical chemotherapeutic agent doxorubicin, but not to the BCL2 inhibitor ABT-199, identifying this approach as a relevant in vitro model to evaluate the activity of some? therapeutic agents. RNAseq analysis revealed modulations of signaling pathways similar to those observed in primary follicular lymphoma cells. Finally, our model supported long-term survival of primary follicular lymphoma B cells. We thus propose a new 3D-model mimicking the lymphoma tumor niche and allowing for the study of the dynamic relationship between tumor cells and their microenvironment and the testing of new anticancer drugs. In parallel, we have for the first time initiated the characterization of a tumor niche never explored before in follicular lymphoma, located in the peri-nodular adipose tissue. In this niche, tumor cells evolve in close contact with stromal cells adopting a CAF phenotype associated with solid tumors, and macrophages presenting with M2 phenotype. Also, T cells expressed an immunosuppressive signature and tumor cells adopt there a quiescent metabolic profile and a plasma cell differentiation.; Le lymphome folliculaire est l'un des exemples paradigmatiques des cancers dépendant d'un microenvironnement tumoral spécifique. Il comprend notamment des fibroblastes associés au cancer (CAF) émergeant de la reprogrammation des cellules stromales lymphoïdes ou de leur(s) précurseur(s) dans le ganglion et la moelle. Les cellules stromales dans le lymphome folliculaire soutiennent directement la croissance des cellules B malignes et orchestrent la niche tumorale en contribuant, par un dialogue bidirectionnel, au recrutement et à la polarisation d'autres sous-populations immunitaires. Une meilleure compréhension des voies de signalisation et des mécanismes moléculaires responsables du remodelage des cellules stromales et de la cinétique de ce dernier seraient utiles pour définir de nouveaux marqueurs prédictifs et de nouvelles approches thérapeutiques dans ce cancer encore incurable. Les modèles in vitro récapitulant les forces biomécaniques, le microenvironnement cellulaire et l'organisation spatiale des lymphomes B restent rares, alors que tous ces paramètres constituent des éléments clés déterminants dans la lymphomagenèse et la résistance aux médicaments. En utilisant une méthode microfluidique basée sur l'encapsulation de cellules dans des microsphères d'alginate perméables, nous avons développé un nouveau modèle 3D incorporant des cellules B de lymphome, de la matrice extracellulaire et/ou des cellules stromales d’amygdale. Nous avons montré que les cellules de lymphome B étaient capables de former des sphéroïdes cohésifs résultant de la surexpression des composants de la matrice extra-cellulaire. De plus, dans ce modèle, les cellules stromales s’auto-organisent pour initier la prolifération des cellules tumorales. La culture 3D induit une résistance à l'agent chimiothérapeutique classique doxorubicine, mais pas à l'inhibiteur de BCL2 ABT-199, identifiant cette approche comme un modèle in vitro pertinent pour comprendre l’activité des agents thérapeutiques . L'analyse RNAseq a mis en évidence des modulations des voies de signalisation similaires à celles observées dans les cellules primaires de lymphome folliculaire. Enfin, notre modèle a permis la survie à long terme in vitro de cellules B primaires de lymphome folliculaire. Nous proposons ainsi un nouveau modèle 3D imitant la niche tumorale du lymphome et permettant d'étudier la relation dynamique entre les cellules tumorales et leur microenvironnement pour les tests de nouveaux médicaments anticancéreux. En parallèle, nous avons pour la première fois, initié la caractérisation d’une niche tumorale jusqu’alors jamais explorée dans le lymphome folliculaire, située dans le tissu adipeux péri-ganglionnaire. Dans cette niche, les cellules tumorales évoluent au contact de cellules stromales adoptant un phénotype CAF associé aux tumeurs solides, et de macrophages associés aux tumeurs de phénotype M2.
Published: 2021

36. CAR-T cells and BiTEs in solid tumors: challenges and perspectives

Author: Roch Houot, Marion Alcantara, Julien Edeline, Aurélien Marabelle, CRLCC Eugène Marquis (CRLCC), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), CHU Pontchaillou [Rennes], Département d’Innovation Thérapeutique et essais précoces [Gustave Roussy] (DITEP), Institut Gustave Roussy (IGR), Immunité et cancer (U932), Institut Curie [Paris]-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), and Chard-Hutchinson, Xavier
Subjects: Cancer Research, medicine.medical_specialty, CAR-T cells, T-Lymphocytes, Receptors, Antigen, T-Cell, [SDV.CAN]Life Sciences [q-bio]/Cancer, Review, Antibody fragments, 03 medical and health sciences, 0302 clinical medicine, Antigen, [SDV.CAN] Life Sciences [q-bio]/Cancer, Neoplasms, Internal medicine, Antibodies, Bispecific, Solid tumors, medicine, Humans, Diseases of the blood and blood-forming organs, Molecular Biology, B cell, RC254-282, Hematology, business.industry, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, [SDV.IMM.IMM]Life Sciences [q-bio]/Immunology/Immunotherapy, Chimeric antigen receptor, 3. Good health, Clinical trial, medicine.anatomical_structure, Oncology, BiTEs, 030220 oncology & carcinogenesis, Cancer research, Car t cells, [SDV.IMM.IMM] Life Sciences [q-bio]/Immunology/Immunotherapy, RC633-647.5, Early phase, business, Bispecific antibodies, 030215 immunology
Abstract: Chimeric antigen receptor (CAR)-modified T cells and BiTEs are both immunotherapies which redirect T cell specificity against a tumor-specific antigen through the use of antibody fragments. They demonstrated remarkable efficacy in B cell hematologic malignancies, thus paving the way for their development in solid tumors. Nonetheless, the use of such new drugs to treat solid tumors is not straightforward. So far, the results from early phase clinical trials are not as impressive as expected but many improvements are under way. In this review we present an overview of the clinical development of CAR-T cells and BiTEs targeting the main antigens expressed by solid tumors. We emphasize the most frequent hurdles encountered by either CAR-T cells or BiTEs, or both, and summarize the strategies that have been proposed to overcome these obstacles.
Published: 2021
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37. AMPK activates Parkin independent autophagy and improves post sepsis immune defense against secondary bacterial lung infections

Author: Dae Won Park, Eugene J. Becker, Jean-Marc Tadié, Nathaniel B. Bone, Balu K. Chacko, Victor M. Darley-Usmar, Jaroslaw W. Zmijewski, Shaoning Jiang, Murielle Gregoire, Anna A. Zmijewska, Victor J. Thannickal, Maroof Husain, University of Alabama at Birmingham [ Birmingham] (UAB), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), G050886, Nathan Shock Center, University of Alabama at Birmingham, United States, HL139617-01, National Institutes of Health, W81XWH-17-1-0577, U.S. Department of Defense, PACCM, University of Alabama at Birmingham, United States, Chard-Hutchinson, Xavier, and Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )
Subjects: Lung Diseases, Ubiquitin-Protein Ligases, Science, medicine.medical_treatment, Context (language use), AMP-Activated Protein Kinases, Biology, [SDV.IMM.II]Life Sciences [q-bio]/Immunology/Innate immunity, [SDV.MHEP.PSR]Life Sciences [q-bio]/Human health and pathology/Pulmonology and respiratory tract, Article, Parkin, Mice, 03 medical and health sciences, 0302 clinical medicine, Immune system, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Sepsis, Mitophagy, Autophagy, medicine, Animals, Humans, Macrophage, [SDV.IMM.II] Life Sciences [q-bio]/Immunology/Innate immunity, 030304 developmental biology, 0303 health sciences, Multidisciplinary, AMPK, Immunosuppression, Antimicrobial responses, Bacterial Infections, 3. Good health, nervous system diseases, Mice, Inbred C57BL, Cancer research, [SDV.MHEP.MI] Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Medicine, [SDV.MHEP.PSR] Life Sciences [q-bio]/Human health and pathology/Pulmonology and respiratory tract, 030217 neurology & neurosurgery
Abstract: Metabolic and bioenergetic plasticity of immune cells is essential for optimal responses to bacterial infections. AMPK and Parkin ubiquitin ligase are known to regulate mitochondrial quality control mitophagy that prevents unwanted inflammatory responses. However, it is not known if this evolutionarily conserved mechanism has been coopted by the host immune defense to eradicate bacterial pathogens and influence post-sepsis immunosuppression. Parkin, AMPK levels, and the effects of AMPK activators were investigated in human leukocytes from sepsis survivors as well as wild type and Park2−/− murine macrophages. In vivo, the impact of AMPK and Parkin was determined in mice subjected to polymicrobial intra-abdominal sepsis and secondary lung bacterial infections. Mice were treated with metformin during established immunosuppression. We showed that bacteria and mitochondria share mechanisms of autophagic killing/clearance triggered by sentinel events that involve depolarization of mitochondria and recruitment of Parkin in macrophages. Parkin-deficient mice/macrophages fail to form phagolysosomes and kill bacteria. This impairment of host defense is seen in the context of sepsis-induced immunosuppression with decreased levels of Parkin. AMPK activators, including metformin, stimulate Parkin-independent autophagy and bacterial killing in leukocytes from post-shock patients and in lungs of sepsis-immunosuppressed mice. Our results support a dual role of Parkin and AMPK in the clearance of dysfunctional mitochondria and killing of pathogenic bacteria, and explain the immunosuppressive phenotype associated Parkin and AMPK deficiency. AMPK activation appeared to be a crucial therapeutic target for the macrophage immunosuppressive phenotype and to reduce severity of secondary bacterial lung infections and respiratory failure.
Published: 2021
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38. C-reactive protein in immunometabolism: spared from ’paying the piper’

Author: Zudin Puthucheary, Jean-Marc Tadié, Jayshil J. Patel, Barts & The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), CHU Pontchaillou [Rennes], Medical College of Wisconsin [Milwaukee] (MCW), Chard-Hutchinson, Xavier, Université de Rennes 1 (UR1), and Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )
Subjects: 0303 health sciences, medicine.medical_specialty, Piper, biology, business.industry, Pain medicine, [SDV]Life Sciences [q-bio], C-reactive protein, Critical Care and Intensive Care Medicine, biology.organism_classification, [SDV] Life Sciences [q-bio], 03 medical and health sciences, C-Reactive Protein, 0302 clinical medicine, 030228 respiratory system, Internal medicine, Anesthesiology, medicine, biology.protein, Humans, business, ComputingMilieux_MISCELLANEOUS, 030304 developmental biology
Abstract: International audience
Published: 2021
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39. The Influence of Underlying Disease on Rituximab Pharmacokinetics May be Explained by Target-Mediated Drug Disposition

Author: Emmanuel Gyan, Divi Cornec, Olivier Casasnovas, Gilles Paintaud, Denis Mulleman, Thierry Lamy, Céline Desvignes, Stéphane Leprêtre, David Ternant, Amina Bensalem, Ulrich Specks, Guillaume Cartron, Groupe innovation et ciblage cellulaire (GICC), EA 7501 [2018-...] (GICC EA 7501), Université de Tours (UT), LPHI - Laboratory of Pathogen Host Interactions (LPHI), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Mayo Clinic [Rochester], Centre d’Investigation Clinique [Tours] CIC 1415 (CIC ), Centre Hospitalier Régional Universitaire de Tours (CHRU Tours)-Hôpital Bretonneau-Université de Tours (UT)-Institut National de la Santé et de la Recherche Médicale (INSERM), Lymphocyte B et Auto-immunité (LBAI), Université de Brest (UBO)-Institut Brestois Santé Agro Matière (IBSAM), Université de Brest (UBO)-Institut National de la Santé et de la Recherche Médicale (INSERM), Service de néphrologie et immunologie clinique [CHRU Tours], Centre Hospitalier Régional Universitaire de Tours (CHRU Tours)-Hôpital Bretonneau-Université de Tours (UT), Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Pontchaillou [Rennes], Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Centre de Lutte Contre le Cancer Henri Becquerel Normandie Rouen (CLCC Henri Becquerel), EA4245 - Transplantation, Immunologie, Inflammation [Tours] (T2i), Laboratory of Pathogen Host Interactions [Montpellier] (LPHI), Lymphocytes B, Autoimmunité et Immunothérapies (LBAI), Université de Brest (UBO)-Institut National de la Santé et de la Recherche Médicale (INSERM)-LabEX IGO Immunothérapie Grand Ouest, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Institut Brestois Santé Agro Matière (IBSAM), Université de Brest (UBO), Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Université de Tours, Centre Hospitalier Régional Universitaire de Tours (CHRU Tours)-Hôpital Bretonneau-Université de Tours-Institut National de la Santé et de la Recherche Médicale (INSERM), Service de néphrologie et immunologie clinique [CHRU Tours] (EA4245 UT), Centre Hospitalier Régional Universitaire de Tours (CHRU Tours)-Université de Tours-Hôpital Bretonneau, Université de Rennes 1 (UR1), and Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )
Subjects: Chronic lymphocytic leukemia, [SDV]Life Sciences [q-bio], Follicular lymphoma, 030226 pharmacology & pharmacy, Arthritis, Rheumatoid, 03 medical and health sciences, 0302 clinical medicine, Elimination rate constant, Antigen, immune system diseases, hemic and lymphatic diseases, medicine, Humans, Pharmacology (medical), Lymphoma, Follicular, Pharmacology, CD20, biology, business.industry, Antigens, CD20, medicine.disease, Leukemia, Lymphocytic, Chronic, B-Cell, 3. Good health, Lymphoma, 030220 oncology & carcinogenesis, Rheumatoid arthritis, biology.protein, Cancer research, Rituximab, Lymphoma, Large B-Cell, Diffuse, business, medicine.drug
Abstract: International audience; BACKGROUND AND OBJECTIVES: Rituximab is an anti-CD20 monoclonal antibody approved in several diseases, including chronic lymphocytic leukemia (CLL), diffuse large B-cell lymphoma (DLBCL), follicular lymphoma (FL), rheumatoid arthritis (RA), and anti-neutrophil cytoplasmic antibody-associated vasculitis (AAV). The influence of underlying disease on rituximab pharmacokinetics has never been investigated for several cancer and non-cancer diseases simultaneously. This study aimed at assessing this influence using an integrated semi-mechanistic model accounting for target-mediated elimination of rituximab. METHODS: Rituximab concentration-time data from five studies previously published in patients with CLL, DLBCL, FL, RA, and AAV were described using a two-compartment model with irreversible binding of rituximab to its target antigen. Both underlying disease and target antigen measurements were assessed as covariates. RESULTS: Central volume of distribution was [95% confidence interval] 1.7-fold [1.6-1.9] higher in DLBCL than in RA, FL, and CLL, and it was 1.8-fold [1.6-2.1] higher in RA, FL, and CLL than in AAV. First-order elimination rate constants were 1.8-fold [1.7-2.0] and 1.3-fold [1.2-1.5] higher in RA, DLBCL, and FL than in CLL and AAV, respectively. Baseline latent antigen level (L(0)) was 54-fold [30-94], 20-fold [11-36], and 29-fold [14-64] higher in CLL, DLBCL, and FL, respectively, than in RA and AAV. In lymphoma, L(0) increased with baseline total metabolic tumor volume (p = 6.10(-7)). In CLL, the second-order target-mediated elimination rate constant (k(deg)) increased with baseline CD20 count on circulating B cells (CD20(cir), p = 0.0081). CONCLUSIONS: Our results show for the first time that rituximab pharmacokinetics is strongly influenced by underlying disease and disease activity. Notably, neoplasms are associated with higher antigen amounts that result in decreased exposure to rituximab compared to inflammatory diseases. Our model might be used to estimate unbound target amounts in upcoming studies.
Published: 2021
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40. Deciphering Tumor Niches: Lessons From Solid and Hematological Malignancies

Author: Stéphane J.C. Mancini, Karl Balabanian, Isabelle Corre, Julie Gavard, Gwendal Lazennec, Marie-Caroline Le Bousse-Kerdilès, Fawzia Louache, Véronique Maguer-Satta, Nathalie M. Mazure, Fatima Mechta-Grigoriou, Jean-François Peyron, Valérie Trichet, Olivier Herault, Microenvironnement des niches tumorales [UNIV Tours] (CNRS GDR 3697 MicroNiT), Université de Tours-Centre National de la Recherche Scientifique (CNRS), Etablissement Français du Sang Bretagne, EFS, Cancéropôle Grand-Ouest [Bretagne-Centre-Pays de Loire], Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Ecotaxie, microenvironnement et développement lymphocytaire (EMily (UMR_S_1160 / U1160)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP), Institut Carnot, Centre de Recherche en Cancérologie et Immunologie Nantes-Angers (CRCINA), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Nantes - UFR de Médecine et des Techniques Médicales (UFR MEDECINE), Université de Nantes (UN)-Université de Nantes (UN)-Centre hospitalier universitaire de Nantes (CHU Nantes)-Centre National de la Recherche Scientifique (CNRS)-Université d'Angers (UA), Centre Intégré d'Oncologie Nantes/Angers, Sys2Diag-Modélisation et Ingénierie des Systèmes Complexes Biologiques pour le Diagnostic (Sys2Diag), Centre National de la Recherche Scientifique (CNRS)-Alcediag, Interactions cellules souches-niches : physiologie, tumeurs et réparation tissulaire, Service de Santé des Armées-Hôpital Paul Brousse-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris-Saclay, Centre de Recherche en Cancérologie de Lyon (UNICANCER/CRCL), Centre Léon Bérard [Lyon]-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre méditerranéen de médecine moléculaire (C3M), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut National de la Santé et de la Recherche Médicale (INSERM), Unité de génétique et biologie des cancers (U830), Institut Curie [Paris]-Institut National de la Santé et de la Recherche Médicale (INSERM), Sarcomes osseux et remodelage des tissus calcifiés - Phy-Os [Nantes - INSERM U1238] (Phy-Os), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Bretagne Loire (UBL)-Centre hospitalier universitaire de Nantes (CHU Nantes)-Université de Nantes - UFR de Médecine et des Techniques Médicales (UFR MEDECINE), Université de Nantes (UN)-Université de Nantes (UN), ERL 7001 LNOx (Leukemic Niche & redOx metabolism / Niche leucémique et métabolisme redOx) (LNOx), Groupe innovation et ciblage cellulaire (GICC), EA 7501 [2018-...] (GICC EA 7501), Université de Tours-Université de Tours-Centre National de la Recherche Scientifique (CNRS)-Centre Hospitalier Régional Universitaire de Tours (CHRU TOURS), CHU Trousseau [Tours], Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS), Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Université de Nantes (UN)-Université de Nantes (UN)-Centre hospitalier universitaire de Nantes (CHU Nantes)-Université Bretagne Loire (UBL), Université de Tours (UT)-Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS)-Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), CNRS GDR 3697 MicroNiT, Centre National de la Recherche Scientifique (CNRS), CNRS UMR9005, Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Université d'Angers (UA)-Université de Nantes (UN)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre hospitalier universitaire de Nantes (CHU Nantes), Signaling in Oncogenesis, Angiogenesis and Permeability - SOAP (CRCI2NA / Eq 6), Centre de Recherche en Cancérologie et Immunologie Intégrée Nantes-Angers (CRCI2NA ), Université d'Angers (UA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Nantes Université - UFR de Médecine et des Techniques Médicales (Nantes Univ - UFR MEDECINE), Nantes Université - pôle Santé, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - pôle Santé, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Université d'Angers (UA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Nantes Université - UFR de Médecine et des Techniques Médicales (Nantes Univ - UFR MEDECINE), Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Côte d'Azur (UCA), Université de Tours (UT), Lazennec, Gwendal, Signaling in Oncogenesis, Angiogenesis and Permeability (CRCINA-ÉQUIPE 15), Centre hospitalier universitaire de Nantes (CHU Nantes)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Nantes (UN)-Université d'Angers (UA)-Centre hospitalier universitaire de Nantes (CHU Nantes)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Nantes (UN)-Université d'Angers (UA), Centre hospitalier universitaire de Nantes (CHU Nantes)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Nantes (UN)-Université d'Angers (UA), Centre Hospitalier Régional Universitaire de Tours (CHRU Tours)-Centre National de la Recherche Scientifique (CNRS)-Groupe innovation et ciblage cellulaire (GICC), EA 7501 [2018-...] (GICC EA 7501), and Université de Tours (UT)-Université de Tours (UT)
Subjects: Stromal cell, endothelial plasticity, Angiogenesis, Mini Review, [SDV]Life Sciences [q-bio], Niche, Immunology, Context (language use), [SDV.CAN]Life Sciences [q-bio]/Cancer, Cell Communication, cytokines and chemokines, Biology, cancer-associated fibroblasts (CAFs), 03 medical and health sciences, angiogenesis, 0302 clinical medicine, [SDV.CAN] Life Sciences [q-bio]/Cancer, Cancer-Associated Fibroblasts, Cancer stem cell, Neoplasms, medicine, Tumor Microenvironment, Immunology and Allergy, Animals, Humans, 030304 developmental biology, 0303 health sciences, Neovascularization, Pathologic, energy/oxidative metabolism, Mesenchymal stem cell, mitochondrial transfer, Mesenchymal Stem Cells, RC581-607, microenvironment, 3. Good health, Haematopoiesis, medicine.anatomical_structure, mesenchymal stem/stromal cells (MSCs), 030220 oncology & carcinogenesis, Cancer research, Cytokines, Bone marrow, Endothelium, Vascular, Immunologic diseases. Allergy
Abstract: International audience; Knowledge about the hematopoietic niche has evolved considerably in recent years, in particular through in vitro analyzes, mouse models and the use of xenografts. Its complexity in the human bone marrow, in particular in a context of hematological malignancy, is more difficult to decipher by these strategies and could benefit from the knowledge acquired on the niches of solid tumors. Indeed, some common features can be suspected, since the bone marrow is a frequent site of solid tumor metastases. Recent research on solid tumors has provided very interesting information on the interactions between tumoral cells and their microenvironment, composed notably of mesenchymal, endothelial and immune cells. This review thus focuses on recent discoveries on tumor niches that could help in understanding hematopoietic niches, with special attention to 4 particular points: i) the heterogeneity of carcinoma/cancer-associated fibroblasts (CAFs) and mesenchymal stem/stromal cells (MSCs), ii) niche cytokines and chemokines, iii) the energy/oxidative metabolism and communication, especially mitochondrial transfer, and iv) the vascular niche through angiogenesis and endothelial plasticity. The elements highlighted in this review identify actors and/or pathways of the microenvironment that are broadly and often involved in cancer processes. This would open avenues for innovative therapeutic opportunities targeting not only cancer stem cells but also their regulatory tumor niche(s), in order to improve current antitumor therapies.
Published: 2021
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41. RNA-based immunoglobulin repertoire sequencing is a new tool for the management of monoclonal gammopathy of renal (kidney) significance

Author: Alexis Saintamand, Frank Bridoux, Sarah Nasraddine, Mathilde Dargelos, Michel Cogné, Estelle Desport, Sabrina Bouyer, Mehdi Alizadeh, Vincent Javaugue, Paco Derouault, Sébastien Bender, Matthieu Filloux, Virginie Pascal, Christophe Sirac, Arnaud Jaccard, Contrôle de la Réponse Immune B et des Lymphoproliférations (CRIBL), Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre hospitalier universitaire de Poitiers (CHU Poitiers), CHU Limoges, Etablissement français du sang [Rennes] (EFS Bretagne), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Chard-Hutchinson, Xavier, Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), and This work was supported by grants from AREN Poitou-Charentes, Comitéd’Orientation de la Recherche en Cancérologie (CORC), Limousin committees of Liguenationale contre le cancer, Agence régionale de la santé, Institut Universitaire de France,'Association Française contre l’Amylose' and 'Fondation Française pour la Recherche contrele Myélome et les Gammapathies' The authors acknowledge A. Rinsant and A. Lehericy fortheir technical assistance and E. Guerin of the sequencing technical plateform of CHU Limoges
Subjects: Ig, [SDV]Life Sciences [q-bio], Clone (cell biology), Paraproteinemias, Somatic hypermutation, monoclonal gammopathy of renal significance, Biology, Immunoglobulin light chain, Kidney, 03 medical and health sciences, 0302 clinical medicine, medicine, Humans, AL-amyloidosis, 030304 developmental biology, 0303 health sciences, medicine.disease, Isotype, Molecular biology, 3. Good health, [SDV] Life Sciences [q-bio], medicine.anatomical_structure, MRNA Sequencing, Nephrology, 030220 oncology & carcinogenesis, biology.protein, RNA, Immunoglobulin Light Chains, Kidney Diseases, next-generation sequencing, Bone marrow, Antibody, Kidney disease
Abstract: International audience; The diagnostic approach of monoclonal gammopathy of renal significance is based on the detection of a monoclonal immunoglobulin in the blood and urine, and the identification of the underlying clone through bone marrow and/or peripheral blood cytologic and flow cytometry analysis. However, the monoclonal component and its corresponding clone may be undetectable using these routine techniques. Since clone identification is the cornerstone for guiding therapy and assessing disease response, more sensitive methods are required. We recently developed a high-throughput sequencing assay from bone marrow mRNA encoding immunoglobulins (RACE-RepSeq). This technique provides both full-length V(D)J region (variable, diversity and joining genes that generate unique receptors as antigen receptors) of the monoclonal immunoglobulin and the dominant immunoglobulin repertoire. This allows analysis of mutational patterns, immunoglobulin variable gene frequencies and diversity due to somatic hypermutation. Here, we evaluated the diagnostic performance of RACE-RepSeq in 16 patients with monoclonal-associated kidney lesions, and low serum monoclonal immunoglobulin and free light chain levels at diagnosis. Bone marrow immunohistochemical analysis was negative in all 11 patients so tested and 7 of 12 patients had no detectable clone matching the kidney deposits using flow cytometry analysis. By contrast, RACE-RepSeq detected a dominant clonal light chain sequence of matched isotype with respect to kidney deposits in all patients. Thus, high throughput mRNA sequencing appears highly sensitive to detect subtle clonal disorders in monoclonal gammopathy of renal significance and suggest this novel approach could help improve the management of this kidney disease.
Published: 2021
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42. Targeting IgE polyadenylation signal with antisense oligonucleotides decreases IgE secretion and plasma cell viability

Author: Jeanne Moreau, Claire Carrion, Christelle Oblet, Michel Cogné, Laurent Delpy, Anne Marchalot, Catherine Horiot, Jean-Marie Lambert, Justine Pollet, Brice Laffleur, Contrôle de la Réponse Immune B et des Lymphoproliférations (CRIBL), Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Biologie Intégrative Santé Chimie Environnement (BISCEm), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Etablissement Français du Sang Bretagne, EFS, Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), ANR, Fondation ARC pour la Recherche sur Le Cancer, Inserm Transfert SA, ANR-17-CE15-0024,TIE-Skip,Impact des immunoglobulines tronquées produites par saut d'exon dans les plasmocytes : vers des approches thérapeutiques utilisant des oligonucléotides antisens(2017), and Chard-Hutchinson, Xavier
Subjects: antisense oligonucleotide, [SDV.IMM] Life Sciences [q-bio]/Immunology, Cell Survival, Genetic enhancement, [SDV]Life Sciences [q-bio], Immunology, B-cell receptor, Plasma cell, Immunoglobulin E, plasma cells, Mice, 03 medical and health sciences, 0302 clinical medicine, Hypersensitivity, medicine, Animals, Humans, Immunology and Allergy, Secretion, Viability assay, polyadenylation, Receptor, cell viability, 030304 developmental biology, 0303 health sciences, B cells, biology, Receptors, IgE, Chemistry, Oligonucleotides, Antisense, allergy, Molecular biology, gene therapy, 3. Good health, [SDV] Life Sciences [q-bio], medicine.anatomical_structure, Apoptosis, 030220 oncology & carcinogenesis, biology.protein, [SDV.IMM]Life Sciences [q-bio]/Immunology, Multiple Myeloma
Abstract: International audience; BACKGROUND: Allergy regroups numerous complex and various diseases classified as IgE-dependent or non-IgE-dependent hypersensitivities. IgEs are expressed as membrane and secreted forms by B cells and plasma cells, respectively. In IgE-mediated hypersensitivity, IgE secretion and binding to the high-affinity IgE receptor FcεRI on effector cells are responsible for the onset of allergic symptoms; in contrast, surface IgE expression as a B-cell receptor is barely detectable. OBJECTIVE: Our aim was to test an innovative antisense approach to reducing IgE secretion. METHODS: We designed an antisense oligonucleotide (ASO) targeting the polyadenylation signal of human secreted IgE to redirect IgE transcript polyadenylation from the secreted form to the membrane form. ASO treatments were performed on B cells from transgenic mice expressing humanized IgE (InEps mice), as well as on human primary B cells and myeloma cells. In vivo ASO delivery was tested by using an InEps mouse model. RESULTS: We demonstrated that treatment with a morpholino ASO targeting the secreted IgE polyadenylation signal drastically decreased IgE secretion and inversely increased membrane IgE mRNA expression. In addition, ASO treatment induced apoptosis of IgE-expressing U266 myeloma cells, and RNA sequencing revealed attenuation of their plasma cell phenotype. Remarkably, systemic administration of an ASO coupled with Pip6a as an arginine-rich cell-penetrating peptide decreased IgE secretion in vivo. CONCLUSION: Altogether, this ASO strategy could be an effective way to decrease IgE secretion and allergic symptoms in patients with IgE-dependent allergies, and it could also promote allergen tolerance through apoptosis of IgE(+) antibody-secreting cells.
Published: 2021
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43. Herpesviridae systemic reactivations in COVID-19 associated ARDS patients

Author: Reizine, Florian, Liard, Clémence, Pronier, Charlotte, Thibault, V., Maamar, Adel, Gacouin, Arnaud, Tadié, Jean-Marc, CHU Pontchaillou [Rennes], Institut de recherche en santé, environnement et travail (Irset), Université d'Angers (UA)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), None, Université d'Angers (UA)-Université de Rennes (UR)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), and Jonchère, Laurent
Subjects: [SDV] Life Sciences [q-bio], Respiratory Distress Syndrome, SARS-CoV-2, [SDV]Life Sciences [q-bio], COVID-19, Humans, Letter to the Editor, ComputingMilieux_MISCELLANEOUS, Herpesviridae
Abstract: International audience
Published: 2021
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44. Medial Thighplasty Improves Patient's Quality of Life After Massive Weight Loss: a Prospective Multicentric Study

Author: Silvia Gandolfi, Nicolas Bertheuil, Isabelle Pluvy, Eric Watier, Benoit Chaput, Maarten M. Hoogbergen, Camille Mocquard, CHU Pontchaillou [Rennes], Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Orthopedic, Traumatology, Plastic Reconstructive and Hand Surgery Unit (CHU Besançon), Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), CHU Casselardit - Junod, CHU Rouen, Normandie Université (NU), and Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )
Subjects: Adult, Plastic surgery, Reconstructive surgery, medicine.medical_specialty, Endocrinology, Diabetes and Metabolism, [SDV]Life Sciences [q-bio], Health change, 03 medical and health sciences, 0302 clinical medicine, Quality of life, Weight loss, Weight Loss, medicine, Humans, Prospective Studies, 030212 general & internal medicine, Prospective cohort study, Medial thighplasty, Retrospective Studies, 2. Zero hunger, Nutrition and Dietetics, business.industry, Middle Aged, Obesity, Morbid, 3. Good health, Female sexual function, Quality of Life, Physical therapy, Massive weight loss, Female, Surgery, medicine.symptom, business, Body mass index, 030217 neurology & neurosurgery, Post bariatric
Abstract: International audience; Background The aim of this study was to assess the impact of medial thighplasty following massive weight loss on the quality of life of patients and on their sexual life. Methods We performed a multicentric, prospective study on the quality of life after massive weight loss using the Short-Form 36 questionnaire, the Female Sexual Function Index questionnaire, and the Moorehead-Ardelt Quality of life questionnaire. Forty-nine patients who underwent medial thighplasty were included in three centers and evaluation was made pre- and post-operatively. Results The mean age of the patients was 44 +/- 12.5 years. The average pre-medial thighplasty body mass index was 27 +/- 3.8 kg/m(2). All the categories of the SF36 questionnaire scored higher after surgery apart from "health change" but only the "role limitations due to emotional problems" category was significantly improved (p= 0.0081). Similarly, the MooreheadArdelt questionnaire showed a positive impact of the surgery on the quality of life in general (mean total score 1.04 +/- 1.37) and on self- esteem, physical activity, social relationships, and work performance. Interestingly, sexual activity was not improved by the surgery and this result is in line with the FSFI, which showed no effect of medial thighplasty on sexual life. Conclusions Medial thighplasty improves the quality of life of patients after massive weight loss but does not seem to modify the sexual quality of life. These results clearly indicate that this surgery should be widely offered to patients seeking reconstruction of massive weight sequelae.
Published: 2021
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45. Single cell resolution of Plasma Cell fate programming in health and disease

Author: Wolfgang Schuh, Hans-Martin Jäck, Amélie Bonaud, Céline Delaloy, Marion Espéli, Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), LabEX IGO Immunothérapie Grand Ouest, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Ecotaxie, microenvironnement et développement lymphocytaire (EMily (UMR_S_1160 / U1160)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP), GRK2599, Deutsche Forschungsgemeinschaft, ANR‐16‐IDEX‐0007, Agence Nationale de la Recherche, Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Nantes Université (Nantes Univ), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), and ANR-16-IDEX-0007,NExT (I-SITE),NExT (I-SITE)(2016)
Subjects: Cell type, [SDV]Life Sciences [q-bio], Immunology, Population, Cell, Plasma Cells, Plasma cell, Biology, 03 medical and health sciences, 0302 clinical medicine, Immune system, Single-cell analysis, Multiple myeloma, medicine, Immunology and Allergy, Animals, Humans, RNA-Seq, education, B cell, 030304 developmental biology, 0303 health sciences, education.field_of_study, Germinal centre-derived lymphoma, Cell Differentiation, Cell biology, medicine.anatomical_structure, Immune System Diseases, Chromatin Immunoprecipitation Sequencing, [SDV.IMM]Life Sciences [q-bio]/Immunology, Cytokine secretion, 030215 immunology
Abstract: Long considered a homogeneous population dedicated to antibody secretion, plasma cell phenotypic and functional heterogeneity is increasingly recognised. Plasma cells were first segregated based on their maturation level, but the complexity of this subset might well be underestimated by this simple dichotomy. Indeed, in the last decade new functions have been attributed to plasma cells including but not limited to cytokine secretion. However, a proper characterization of plasma cell heterogeneity has remained elusive partly due to technical issues and cellular features that are specific to this cell type. Cell intrinsic and cell extrinsic signals could be at the origin of this heterogeneity. Recent advances in technologies like single cell RNA-seq, ATAC-seq or ChIP-seq on low cell numbers helped to elucidate the fate decision in other cell lineages and similar approaches could be implemented to evaluate the heterogeneous fate of activated B cells in health and disease. Here, we summarized published work shedding some lights on the stimuli and genetic program shaping B cell terminal differentiation at the single cell level in mice and men. We also discuss the fate and heterogeneity of plasma cells during immune responses, vaccination and in the frame of human plasma cell disorders. This article is protected by copyright. All rights reserved.
Published: 2021
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46. Smoldering multiple myeloma: biology, clinical manifestations and management

Author: Olivier Decaux, Laura Cailly, Xavier Leleu, Laly Nsiala, Cécile Gruchet, Niels Moya, Stéphanie Guidez, Florence Sabirou, Arthur Bobin, Helene Gardeney, Anthony Levy, Salomon Manier, Cécile Tomowiak, Centre hospitalier universitaire de Poitiers (CHU Poitiers), Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), and Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )
Subjects: Oncology, Smoldering Multiple Myeloma, Cancer Research, medicine.medical_specialty, [SDV]Life Sciences [q-bio], Biology, Asymptomatic, 03 medical and health sciences, Therapeutic approach, Risk model, 0302 clinical medicine, Immune system, Risk Factors, Internal medicine, risk-model, medicine, Humans, Multiple myeloma, 030304 developmental biology, 0303 health sciences, Hematology, medicine.disease, Immune surveillance, SMM, 3. Good health, medicine.anatomical_structure, active MM, 030220 oncology & carcinogenesis, Disease Progression, Bone marrow, medicine.symptom, Monoclonal protein, Multiple Myeloma
Abstract: International audience; Smoldering multiple myeloma (SMM) is a heterogeneous group of asymptomatic plasma cell disorder characterized by the presence of monoclonal protein >= 30 g/L and/or 10-60% of bone marrow plasma cells and no evidence of SLiM-CRAB criteria according to the 2014 International Myeloma Working Group (IMWG) recommendations. Once the effort to reclassify SMM with active disease as MM requiring treatment was completed, the need to redefine new high-risk SMM arose. The 20/2/20 and the IMWG risk model with the add-on high-risk cytogenetic abnormalities allow to identify high-risk SMM with 50% risk of progression to MM within 2 years, and therefore might help to propose a better therapeutic approach, either with the goal to << cure >> by profoundly debulk the MM with aggressive therapies, or alternatively to restore the immune surveillance like a << delay >> strategy with immune-based therapies. The debate is still ongoing but clearly challenges the watch-and-wait standard of care.
Published: 2021
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47. Improving the decision to switch from first to second-line therapy in MS: a dynamic scoring system

Author: Sabathe, C., Casey, Romain, Vukusic, S., Leray, Emmanuelle, Mathey, G., de Seze, J., Ciron, J., Wiertlewski, S., Ruet, A., Pelletier, J., Zephir, H., Michel, L., Lebrun-Frenay, C., Moisset, X., Thouvenot, Eric, Camdessanche, J. -P., Bakchine, Serge, Stankoff, B., Al Khedr, A., Cabre, P., Maillart, E., Berger, E., Heinzlef, O., Hankiewicz, K., Moreau, T., Gout, O., Bourre, B., Wahab, A., Labauge, Pierre, Montcuquet, A., Defer, G., Maurousset, A., Maubeuge, N., Dalia, D. Boulos, Ben Nasr, H., Nifle, C., Casez, O., Laplaud, D. -A., Foucher, yohann, MethodS in Patients-centered outcomes and HEalth ResEarch (SPHERE), Université de Tours (UT)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Nantes - UFR des Sciences Pharmaceutiques et Biologiques, Université de Nantes (UN)-Université de Nantes (UN), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon, Centre de recherche en neurosciences de Lyon - Lyon Neuroscience Research Center (CRNL), Université de Lyon-Université de Lyon-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Hospices Civils de Lyon (HCL), Recherche en Pharmaco-épidémiologie et Recours aux Soins (REPERES), Université de Rennes (UR)-École des Hautes Études en Santé Publique [EHESP] (EHESP), École des Hautes Études en Santé Publique [EHESP] (EHESP), Adaptation, mesure et évaluation en santé. Approches interdisciplinaires (APEMAC), Université de Lorraine (UL), Service de neurologie [CHRU Nancy], Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), CHU Strasbourg, CIC Strasbourg (Centre d’Investigation Clinique Plurithématique (CIC - P) ), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Nouvel Hôpital Civil de Strasbourg-Hôpital de Hautepierre [Strasbourg], Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Centre hospitalier universitaire de Nantes (CHU Nantes), Centre de Recherche en Transplantation et Immunologie (U1064 Inserm - CRTI), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Nantes - UFR de Médecine et des Techniques Médicales (UFR MEDECINE), Université de Bordeaux (UB), Neurocentre Magendie : Physiopathologie de la Plasticité Neuronale (U1215 Inserm - UB), Université de Bordeaux (UB)-Institut François Magendie-Institut National de la Santé et de la Recherche Médicale (INSERM), CIC Bordeaux, Université Bordeaux Segalen - Bordeaux 2-Institut National de la Santé et de la Recherche Médicale (INSERM), Hôpital de la Timone [CHU - APHM] (TIMONE), Lille Neurosciences & Cognition - U 1172 (LilNCog), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lille-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Centre d'Investigation Clinique [Rennes] (CIC), Université de Rennes (UR)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Pontchaillou [Rennes], Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), CHU Nice [Cimiez], Hôpital Cimiez [Nice] (CHU), CHU Clermont-Ferrand, Centre Hospitalier Universitaire de Nîmes (CHU Nîmes), Institut de Génomique Fonctionnelle (IGF), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Universitaire de Saint-Etienne [CHU Saint-Etienne] (CHU ST-E), Centre Hospitalier Universitaire de Reims (CHU Reims), Institut du Cerveau = Paris Brain Institute (ICM), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), CHU Amiens-Picardie, CHU de la Martinique [Fort de France], CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Service de Neurologie [CHRU Besançon], Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon), CHI Poissy-Saint-Germain, Centre Hospitalier de Saint-Denis [Ile-de-France], Centre d'épidémiologie des populations (CEP), Université de Bourgogne (UB)-Centre Régional de Lutte contre le cancer Georges-François Leclerc [Dijon] (UNICANCER/CRLCC-CGFL), UNICANCER-UNICANCER, Fondation Ophtalmologique Adolphe de Rotschild, CHU Rouen, Normandie Université (NU), CHU Henri Mondor [Créteil], CHU Montpellier, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), CHU Limoges, CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN), CHU Trousseau [Tours], Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), INSERM CIC 0802 (INSERM - CHU de Poitiers), Université de Poitiers-Centre hospitalier universitaire de Poitiers (CHU Poitiers)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre hospitalier universitaire de Poitiers (CHU Poitiers), Hémostase, Inflammation, Thrombose (HITH - U1176 Inserm - CHU Bicêtre), Institut National de la Santé et de la Recherche Médicale (INSERM)-AP-HP Hôpital Bicêtre (Le Kremlin-Bicêtre)-Université Paris-Saclay, Hôpital Sud Francilien Corbeil Essonne, Centre de Référence des Maladies Auto-Inflammatoires et des Amyloses [CH Versailles] (CeRéMAIA - Hôpital André Mignot), Centre Hospitalier de Versailles André Mignot (CHV), Laboratoire de Génétique Chromosomique [CHU de Grenoble], CHU Grenoble, Agence Nationale de la Recherche French National Research Agency (ANR) uropean Commission [ANR-10COHO-002], Fond de dotation de l'Universite de Nantes, Foundation EDMUS, ANR-10-COHO-0002,OFSEP,Observatoire Français de la Sclérose en Plaques(2010), Université de Tours-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Nantes - UFR des Sciences Pharmaceutiques et Biologiques, Centre de recherche en neurosciences de Lyon (CRNL), Université de Lyon-Université de Lyon-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-École des Hautes Études en Santé Publique [EHESP] (EHESP), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Strasbourg (UNISTRA)-Hôpital de Hautepierre [Strasbourg]-Nouvel Hôpital Civil de Strasbourg, CHU Toulouse [Toulouse], Physiopathologie de la Plasticité Neuronale (Neurocentre Magendie - U1215 Inserm), Lille Neurosciences & Cognition - U 1172 (LilNCog (ex-JPARC)), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Universitaire de Saint-Etienne (CHU de Saint-Etienne), Institut du Cerveau et de la Moëlle Epinière = Brain and Spine Institute (ICM), Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), CHU Henri Mondor, Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre hospitalier universitaire de Poitiers (CHU Poitiers)-Université de Poitiers, Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), and Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)
Subjects: [SDV]Life Sciences [q-bio], ComputingMilieux_MISCELLANEOUS
Abstract: International audience; Meeting Abstract 035
Published: 2021
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48. Risk Factors for Complications after J Medial Thighplasty following Massive Weight Loss: A Multivariate Analysis of 94 Consecutive Patients

Author: Farid Bekara, Silvia Gandolfi, Damien Bergeat, Jérôme Duisit, Nicolas Bertheuil, Eric Watier, CHU Pontchaillou [Rennes], Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Ecosystèmes, biodiversité, évolution [Rennes] (ECOBIO), Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Cliniques Universitaires Saint-Luc [Bruxelles], Université Catholique de Louvain = Catholic University of Louvain (UCL), Service de médecine nucléaire [Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Service de Médecine Interne [CHU Rouen], CHU Rouen, Normandie Université (NU)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), UNIROUEN - UFR Santé (UNIROUEN UFR Santé), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU), Nutrition, Métabolismes et Cancer (NuMeCan), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), UCL - SSS/IREC/SLUC - Pôle St.-Luc, UCL - (SLuc) Service de chirurgie plastique, Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), and Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)
Subjects: Adult, medicine.medical_specialty, Multivariate analysis, [SDV]Life Sciences [q-bio], Preoperative risk, Bariatric Surgery, 030230 surgery, Medial compartment of thigh, Severity of Illness Index, Body Mass Index, 030207 dermatology & venereal diseases, 03 medical and health sciences, 0302 clinical medicine, Postoperative Complications, Quality of life, Weight loss, Risk Factors, Weight Loss, medicine, Humans, Prospective Studies, 2. Zero hunger, business.industry, Medical record, Age Factors, Middle Aged, Body Contouring, Single surgeon, 3. Good health, Surgery, Obesity, Morbid, Thigh, Multivariate Analysis, Female, medicine.symptom, business, Body mass index
Abstract: International audience; BACKGROUND: Bariatric surgery has increased the number of patients requiring medial thighplasty after massive weight loss. However, despite the various complications, the procedure improves quality of life. The authors report postoperative complications of vertical J-shaped medial thigh lift in a series of patients and identify preoperative risk factors. METHODS: For almost 5 years, the details of all J medial thighplasties performed by a single surgeon were recorded; detailed medical records were also available. Complications can be major (e.g., need for early surgical revision or readmission) or minor (delayed wound healing). RESULTS: During the study period, 94 patients were treated and only minor complications were recorded (42.5 percent). On multivariate analysis, older age (OR, 1.05; 95 percent CI, 1.01 to 1.10) and a body mass index greater than or equal to 30 kg/m2 (OR, 2.82; 95 percent CI, 1.10 to 7.22) were independent risk factors for postoperative complications. CONCLUSIONS: As with other postbariatric operations, medial thighplasty is associated with significant morbidity, but the risk thereof can be easily established and managed. Specific algorithms for determining the risk of postoperative complications based on age and body mass index are needed to guide preoperative discussions with patients and perform patient selection. CLINICAL QUESTION/LEVEL OF EVIDENCE: Risk, III.
Published: 2021
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49. [Perspectives for the evolution and use of CAR-T cells]

Author: Steve, Genebrier, Karin, Tarte, Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), and CHU Pontchaillou [Rennes]
Subjects: Receptors, Chimeric Antigen, Tumor immunotherapy, Immune escape, Molecular engineering, T-Lymphocytes, [SDV]Life Sciences [q-bio], Manipulation génétique, Immunotherapy, Adoptive, Immunothérapie antitumorale, Échappement immunitaire, Neoplasms, Injections, Intravenous, Humans, Tumor Escape, Cell Engineering
Abstract: National audience; CAR-T cells have recently made a stunning entry on the arena of immunotherapy of B-cell lymphomas. This new treatment approach represents the culmination of 30 years of efforts to understand the role of T cells in the antitumor response. However, this technology is still in its infancy and suffers from a number of limitations. Many areas for improvement, based in particular on the possibilities of additional genetic manipulations of CAR-T cells, aim at reducing their toxicity, increasing their persistence in vivo, preventing the risk of tumor escape, recruiting other immune effectors, or extending their application to other cancers. Further studies of the dynamic interaction between the patient and these live drugs will allow elucidating the mechanisms determining the antitumor response in this context and thus developing more efficiently the future CAR-T cells.
Published: 2021
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50. The EHA Research Roadmap: Immune-based Therapies for Hematological Malignancies

Author: Irene García Cadenas, Fred Falkenburg, Kate Morgan, Hermann Einsele, Fabio Ciceri, Marcel R.M. van den Brink, Emma C. Morris, Jordi Sierra, Franco Locatelli, Natacha Bolaños, H M Mirjam Heemskerk, Arjan A. van de Loosdrecht, Javier Briones, Michael Hudecek, Roch Houot, Michael O'Dwyer, University Hospital of Würzburg, Hospital de la Santa Creu i Sant Pau, IRCCS San Raffaele Scientific Institute [Milan, Italie], Leiden University Medical Center (LUMC), Microenvironment, Cell Differentiation, Immunology and Cancer (MICMAC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), CHU Pontchaillou [Rennes], Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], Myeloma Patients Europe, University College of London [London] (UCL), National University of Ireland Maynooth (Maynooth University), Memorial Sloan Kettering Cancer Center (MSKCC), Amsterdam UMC, Einsele, H., Briones, J., Ciceri, F., Cadenas, I. G., Falkenburg, F., Bolanos, N., Heemskerk, H. M. M., Houot, R., Hudecek, M., Locatelli, F., Morgan, K., Morris, E. C., O'Dwyer, M., Sierra, J. G., van den Brink, M., van de Loosdrecht, A. A., Universiteit Leiden, Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA), IRCCS Ospedale Pediatrico Bambino Gesù [Roma], Weill Medical College of Cornell University [New York], and Amsterdam UMC - Amsterdam University Medical Center
Subjects: medicine.medical_specialty, Platelet disorder, medicine.medical_treatment, [SDV]Life Sciences [q-bio], Clinical science, Hematopoietic stem cell transplantation, 03 medical and health sciences, 0302 clinical medicine, Internal medicine, medicine, Diseases of the blood and blood-forming organs, Intensive care medicine, IMMUNE THERAPY, 030304 developmental biology, 0303 health sciences, Hematology, business.industry, Normal hematopoiesis, Transfusion medicine, 3. Good health, Blood Disorder, Settore MED/38 - PEDIATRIA GENERALE E SPECIALISTICA, European policy, 030220 oncology & carcinogenesis, Perspective, RC633-647.5, business
Abstract: International audience; In 2016, the European Hematology Association (EHA) published the EHA Roadmap for European Hematology Research(1) aiming to highlight achievements in the diagnostics and treatment of blood disorders, and to better inform European policy makers and other stakeholders about the urgent clinical and scientific needs and priorities in the field of hematology. Each section was coordinated by 1-2 section editors who were leading international experts in the field. In the 5 years that have followed, advances in the field of hematology have been plentiful. As such, EHA is pleased to present an updated Research Roadmap, now including 11 sections, each of which will be published separately. The updated EHA Research Roadmap identifies the most urgent priorities in hematology research and clinical science, therefore supporting a more informed, focused, and ideally a more funded future for European Hematology Research. the 11 EHA Research Roadmap sections include normal hematopoiesis; malignant lymphoid diseases; malignant myeloid diseases; anemias and related diseases; platelet disorders; blood coagulation and hemostatic disorders; transfusion medicine; infections in hematology; hematopoietic stem cell transplantation; CAR-T and Other cell-based immune therapies; and gene therapy.
Published: 2021
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