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Your search keyword '"Severine Tabone-Eglinger"' showing total 4 results
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4 results on '"Severine Tabone-Eglinger"'

1. Multiomic analysis of malignant pleural mesothelioma identifies molecular axes and specialized tumor profiles driving intertumor heterogeneity

Author

Lise Mangiante, Nicolas Alcala, Alexandra Sexton-Oates, Alex Di Genova, Abel Gonzalez-Perez, Azhar Khandekar, Erik N. Bergstrom, Jaehee Kim, Xiran Liu, Ricardo Blazquez-Encinas, Colin Giacobi, Nolwenn Le Stang, Sandrine Boyault, Cyrille Cuenin, Severine Tabone-Eglinger, Francesca Damiola, Catherine Voegele, Maude Ardin, Marie-Cecile Michallet, Lorraine Soudade, Tiffany M. Delhomme, Arnaud Poret, Marie Brevet, Marie-Christine Copin, Sophie Giusiano-Courcambeck, Diane Damotte, Cecile Girard, Veronique Hofman, Paul Hofman, Jérôme Mouroux, Charlotte Cohen, Stephanie Lacomme, Julien Mazieres, Vincent Thomas de Montpreville, Corinne Perrin, Gaetane Planchard, Nathalie Rousseau, Isabelle Rouquette, Christine Sagan, Arnaud Scherpereel, Francoise Thivolet, Jean-Michel Vignaud, Didier Jean, Anabelle Gilg Soit Ilg, Robert Olaso, Vincent Meyer, Anne Boland-Auge, Jean-Francois Deleuze, Janine Altmuller, Peter Nuernberg, Alejandro Ibáñez-Costa, Justo P. Castaño, Sylvie Lantuejoul, Akram Ghantous, Charles Maussion, Pierre Courtiol, Hector Hernandez-Vargas, Christophe Caux, Nicolas Girard, Nuria Lopez-Bigas, Ludmil B. Alexandrov, Françoise Galateau-Salle, Matthieu Foll, Lynnette Fernandez-Cuesta, Centre International de Recherche contre le Cancer - International Agency for Research on Cancer (CIRC - IARC), Organisation Mondiale de la Santé / World Health Organization Office (OMS / WHO), Stanford University, Universidad de O'Higgins (UOH), Centre de modélisation mathématique (CMM), Universitad de Chile-Centre National de la Recherche Scientifique (CNRS), Barcelona Institute of Science and Technology (BIST), Instituto de Salud Carlos III [Madrid] (ISC), University of California [San Diego] (UC San Diego), University of California (UC), Cornell University [New York], Maimonides Institute of Biomedical Research of Cordoba, Partenaires INRAE, Universidad de Córdoba = University of Córdoba [Córdoba], Hospital Universitario Reina Sofia [Cordoue, Espagne], CIBER Fisiopatología de la Obesidad y Nutrición [Cordoue, Espagne] (CIBEROBN), 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), Centre Léon Bérard [Lyon], Cypath and Cypath-rb [Villeurbanne] (2C), Tumorothèque du Centre de Référence Régional en Cancérologie [CHRU Lille] (T-C2RC), Université de Lille-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille)-Institut de Pathologie de Lille (IPL), Hôpital Nord [CHU - APHM], Centre de Recherche des Cordeliers (CRC (UMR_S_1138 / U1138)), École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU)-Université Paris Cité (UPCité), Tumorothèque - Centre de Ressources Biologiques Cancer Cochin [Hôpital Cochin AP-HP] (T-CRB Cancer Cochin), Hôpital Cochin [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Groupes hospitalo-universitaires Paris Centre AP-HP [Paris] (GHU Paris Centre), FHU OncoAge - Pathologies liées à l’âge [CHU Nice] (OncoAge), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Pharmacologie Moléculaire et Cellulaire [UNIV Côte d'Azur] (UPMC)-Université Côte d'Azur (UCA), Université Côte d'Azur (UCA), Institut de Recherche sur le Cancer et le Vieillissement (IRCAN), 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)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), Centre Hospitalier Universitaire de Nice (CHU Nice), Hôpital Pasteur [Nice] (CHU), Nutrition-Génétique et Exposition aux Risques Environnementaux (NGERE), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lorraine (UL), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Hôpital Marie-Lannelongue, Tissu-Tumorothèque Est - Centre de Ressources Biologiques [HCL, Lyon] (2TE - CRB HCL), Hospices Civils de Lyon (HCL), Réseau d'expertise anatomopathologique et de recherche sur les tumeurs de la plèvre [CHU Caen] (MESOPATH), CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN), Service Anatomie et cytologie pathologiques [CHU Toulouse], Pôle Biologie [CHU Toulouse], Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Centre de Ressources Biologiques - Cancer - IUCT Oncopole [Toulouse] (CRB - Cancer Toulouse), Thérapies Laser Assistées par l'Image pour l'Oncologie - U 1189 (ONCO-THAI), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lille-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Santé publique France - French National Public Health Agency [Saint-Maurice, France], Centre National de Recherche en Génomique Humaine (CNRGH), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Cologne Centre for Genomics [Cologne, Germany] (2CG), Instituto Maimonides de Investigación Biomédica de Cordoba (IMIBIC), Universidad de Córdoba = University of Córdoba [Córdoba]-Hospital Universitario Reina Sofía, Université Grenoble Alpes (UGA), Owkin [New York, NY, USA] (O), Institut Curie [Paris], Institut Mutualiste de Montsouris (IMM), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Université Paris-Saclay, and Institució Catalana de Recerca i Estudis Avançats (ICREA)

Subjects
[SDV]Life Sciences [q-bio], Genetics, Technology Platforms
Abstract

Malignant pleural mesothelioma (MPM) is an aggressive cancer with rising incidence and challenging clinical management. Through a large series of whole-genome sequencing data, integrated with transcriptomic and epigenomic data using multiomics factor analysis, we demonstrate that the current World Health Organization classification only accounts for up to 10% of interpatient molecular differences. Instead, the MESOMICS project paves the way for a morphomolecular classification of MPM based on four dimensions: ploidy, tumor cell morphology, adaptive immune response and CpG island methylator profile. We show that these four dimensions are complementary, capture major interpatient molecular differences and are delimited by extreme phenotypes that—in the case of the interdependent tumor cell morphology and adapted immune response—reflect tumor specialization. These findings unearth the interplay between MPM functional biology and its genomic history, and provide insights into the variations observed in the clinical behavior of patients with MPM.

Published
2023
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2. Niche anchorage and signaling through membrane‐bound Kit‐ligand/c‐kit receptor are kinase independent and imatinib insensitive

Author

Severine Tabone-Eglinger, David Boettiger, Nicole Aebischer, Monique Wehrle-Haller, Bernhard Wehrle-Haller, Zuleika Calderin-Sollet, Marie-Claude Jacquier, and Perrine Pinon

Subjects
Integrins, Stem cell factor, Integrins/metabolism, Biochemistry, Piperazines, Receptor tyrosine kinase, Mice, 0302 clinical medicine, Cell Movement, Chlorocebus aethiops, Mast Cells, Piperazines/pharmacology, Phosphorylation, Receptor, Pyrimidines/pharmacology, 0303 health sciences, integumentary system, biology, Kinase, Cell migration, Cell biology, Proto-Oncogene Proteins c-kit, Cellular Microenvironment, Actins/metabolism, 030220 oncology & carcinogenesis, Benzamides, COS Cells, Imatinib Mesylate, Proto-Oncogene Proteins c-kit/antagonists & inhibitors/genetics/metabolism, Protein Binding, Signal Transduction, Biotechnology, Fibroblasts/drug effects/metabolism/physiology, Integrin, Cercopithecus aethiops, 03 medical and health sciences, Cell Adhesion, Genetics, Animals, ddc:612, Protein Kinase Inhibitors, Molecular Biology, 030304 developmental biology, Mast Cells/drug effects/metabolism/physiology, Benzamides/pharmacology, Fibroblasts, Molecular biology, Actins, Fibronectin, Pyrimidines, Protein Kinase Inhibitors/pharmacology, biology.protein
Abstract

Kit ligand (KitL) and its tyrosine kinase receptor c-kit are critical for germ cells, melanocytes, mastocytes, and hematopoietic stem cells. Alternative splicing of KitL generates membrane-bound KitL (mb-KitL) or soluble KitL, providing survival or cell migration, respectively. Here we analyzed whether c-kit can function both as an adhesion and signaling receptor to mb-KitL presented by the environmental niche. At contacts between fibroblasts and MC/9 mast cells, mb-KitL, and c-kit formed ligand/receptor clusters that formed stable complexes, which resisted dissociation by c-kit blocking mAbs and provided cell anchorage under physiological shear stresses. Clusters recruited tyrosine-phosphorylated proteins and induced spatially restricted F-actin polymerization. Mutational analysis of c-kit demonstrated kinase-independent mb-KitL/c-kit clustering, anchorage, F-actin polymerization, and Tyr567-dependent cluster phosphorylation. Kinase inhibition of c-kit by imatinib reduced cluster coalescence, but allowed cluster phosphorylation and F-actin polymerization, which required PI3K recruitment and a newly identified juxtamembrane residue. Synergies between integrin and c-kit-mediated spreading and adhesion of MC/9 cells were studied in vitro on immobilized-KitL/fibronectin surfaces. While c-kit blocking antibodies prevented spreading, imatinib blocked spreading induced by soluble- but not immobilized KitL. Thus, "mechanical" activation of c-kit provides signaling, niche-anchorage, and synergies with integrin-mediated adhesion, which is independent of kinase function and resistant to c-kit kinase inhibitors.

Published
2014
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3. Dimerization of Kit‐ligand and efficient cell‐surface presentation requires a conserved Ser‐Gly‐Gly‐Tyr motif in its transmembrane domain

Author

Beat A. Imhof, Frédérique Paulhe, Bernhard Wehrle-Haller, Monique Wehrle-Haller, Severine Tabone-Eglinger, and Marie-Claude Jacquier

Subjects
Stem Cell Factor/ chemistry, Cell Membrane/ metabolism, Amino Acid Motifs, Stem cell factor, ddc:616.07, Biochemistry, Receptor tyrosine kinase, Cell Line, Cercopithecus aethiops, Conserved sequence, Mice, Bimolecular fluorescence complementation, Paracrine signalling, Dogs, Chlorocebus aethiops, Genetics, Animals, Molecular Biology, Conserved Sequence, Stem Cell Factor, COS cells, integumentary system, biology, Cell Membrane, Membrane Proteins, Membrane Proteins/chemistry, Transmembrane protein, Cell biology, Transmembrane domain, COS Cells, biology.protein, Protein Multimerization, Biotechnology
Abstract

Kit-ligand (Kitl), also known as stem cell factor, is a membrane-anchored, noncovalently bound dimer signaling via the c-kit receptor tyrosine kinase, required for migration, survival, and proliferation of hematopoietic stem and germ cells, melanocytes, and mastocytes. Despite its fundamental role in morphogenesis and stem cell biology, the mechanisms that regulate Kitl dimerization are not well understood. By employing cell-permeable cross-linker and quantitative bimolecular fluorescence complementation of wild-type and truncated forms of Kitl, we determined that Kitl dimerization is initiated in the endoplasmic reticulum and mediated to similar levels by the transmembrane and the extracellular growth factor domain. Further biochemical and mutational analysis revealed a conserved Ser-Gly-Gly-Tyr-containing motif that is required for transmembrane domain dimerization and efficient cell-surface expression of Kitl. A novel intracellular capture assay with the Kitl transmembrane domain as bait revealed specific interactions with Kitl, but not with unrelated transmembrane proteins. During evolution, the transmembrane dimerization motif appeared in Kitl at the transition from teleosts to tetrapods, which correlates with the emergence of Kitl as a supporter of stem cell populations. Thus, transmembrane-mediated association of membrane-anchored growth factors consists of a novel mechanism to improve paracrine signaling and morphogenesis.

Published
2009
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4. Membrane-bound Kit ligand regulates melanocyte adhesion and survival, providing physical interaction with an intraepithelial niche

Author

Nicole Aebischer, Bernhard Wehrle-Haller, Severine Tabone-Eglinger, Marie-Claude Jacquier, and Monique Wehrle-Haller

Subjects
Cell Survival, Melanocyte adhesion, Molecular Sequence Data, Integrin, Melanocyte, Biochemistry, Melanocyte migration, Madin Darby Canine Kidney Cells, Mice, 03 medical and health sciences, Dogs, Laminin, Melanoblast, Cell Adhesion, Genetics, medicine, Animals, Amino Acid Sequence, ddc:612, Molecular Biology, 030304 developmental biology, Stem Cell Factor, 0303 health sciences, biology, Cadherin, 030302 biochemistry & molecular biology, Epithelial Cells, Flow Cytometry, Molecular biology, Coculture Techniques, medicine.anatomical_structure, Culture Media, Conditioned, biology.protein, Melanocytes, Melanocyte proliferation, Biotechnology
Abstract

Morphogenesis, as illustrated by melanocyte migration and homing to the skin, requires cadherin adhesion, integrin-dependent migration and Kit-ligand growth factor signaling. However, it is not known how Kit ligand regulates integrin or cadherin-dependent intraepidermal melanocyte behavior. To answer this question, we developed specific 2-dimensional (2D) and 3D culture systems analyzing how soluble or immobilized Kit-ligand-regulated melanocyte migration on vitronectin and laminin, or within a monolayer of kidney epithelial cells. In a 2D system, soluble Kit ligand stimulated integrin-dependent melanoblast migration and chemotaxis and accelerated integrin turnover. In contrast, immobilized, but not soluble, Kit ligand, enhanced integrin-dependent melanocyte spreading on suboptimal laminin concentrations. In 3D, membrane-bound Kit ligand induced intraepithelial melanocyte proliferation, survival, and tight adhesion to epithelial cells, while cleavable Kit ligand was less effective. In contrast, melanocyte motility was independent of membrane-bound Kit ligand, but increased in the presence of the cleavable Kit-ligand isoform. Transmembrane-dimerization or basolateral-targeting mutants of Kit ligand altered intraepithelial melanocyte localization, survival, and adhesion to epithelial cells. These data and the identification of c-kit/Kit-ligand clusters at cell contacts suggest that membrane-bound Kit ligand captures cell surface-expressed c-kit, providing mechanical anchoring and survival signaling within intraepithelial niches, and thereby defining a new mechanism for melanocyte homeostasis and requirement for environmental niches.

Published
2012

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