118 results on '"El Nemer W"'
Search Results
2. P-052: LEVERAGING PLASMA-DERIVED EXOSOMES FOR BIOMARKER DISCOVERY IN SICKLE CELL DISEASE: PREPARATION FOR A LARGE PROSPECTIVE STUDY
- Author
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LAMARRE Y., AICH A., ISLAM M., MOZER SCIANNI J., SILVA PINTO A., CHUDZINSKI TAVASSI A., ELION J., EL NEMER W., SAHA R., KASHIMA S., and TADEUS COVAS D.
- Subjects
Diseases of the blood and blood-forming organs ,RC633-647.5 - Published
- 2022
- Full Text
- View/download PDF
3. CIRCULATING HEMATOPOIETIC STEM AND PROGENITOR CELLS AND ERYTHROBLASTS COUNTING IS INCREASED IN PATIENTS WITH SICKLE CELL ANEMIA
- Author
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Milhomens, J, primary, Godard, A, additional, Grenier, J, additional, De-Grandis, M, additional, Covas, DT, additional, El-Nemer, W, additional, and Kashima, S, additional
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- 2023
- Full Text
- View/download PDF
4. Les syndromes myéloprolifératifs d’expression vasculaire à numération normale : comment les explorer ?
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Fourgeaud, C., El Nemer, W., Michon Pasturel, U., Bonhomme, S., Brignier, A., Lazareth, I., and Priollet, P.
- Published
- 2015
- Full Text
- View/download PDF
5. Role of Lu/BCAM glycoproteins in red cell diseases
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El Nemer, W., Colin, Y., and Le Van Kim, C.
- Published
- 2010
- Full Text
- View/download PDF
6. Red cell and endothelial Lu/BCAM beyond sickle cell disease
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Colin, Y., Rahuel, C., Wautier, M.-P., El Nemer, W., Filipe, A., Cartron, J.-P., Le Van Kim, C., and Wautier, J.-L.
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- 2008
- Full Text
- View/download PDF
7. Role of Lu/BCAM in abnormal adhesion of sickle red blood cells to vascular endothelium
- Author
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El Nemer, W., Gauthier, É., Wautier, M.-P., Rahuel, C., Gane, P., Galactéros, F., Wautier, J.-L., Cartron, J.-P., Colin, Y., and Le Van Kim, C.
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- 2008
- Full Text
- View/download PDF
8. Resolution of sickle cell disease-associated inflammation and tissue damage with 17R-resolvin D1
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Matte, A, Recchiuti, A, Federti, E, Koehl, B, Mintz, T, El Nemer, W, Tharaux, Pl, Brousse, V, Andolfo, I, Lamolinara, A, Weinberg, O, Siciliano, A, Norris, Pc, Riley, Ir, Iolascon, A, Serhan, Cn, Brugnara, C, and De Franceschi, L.
- Subjects
sickle cell disease ,inflammatory vasculopathy ,sickle cell disease, resolvin, inflammatory vasculopathy ,resolvin - Published
- 2019
9. PF441 RED BLOOD CELLS PROPERTIES IN PATIENTS WITH SICKLE CELL DISEASE TREATED WITH LENTIGLOBIN GENE THERAPY IN THE HGB-205 TRIAL
- Author
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Magrin, E., primary, Semeraro, M., additional, Hebert, N., additional, Kiger, L., additional, Nguyen-Peyre, K.-A., additional, Joseph, L., additional, Miccio, A., additional, Chalumeau, A., additional, Magnani, A., additional, Couzin, C., additional, Marouene, J., additional, Gabrion, A., additional, Roudaut, C., additional, El Nemer, W., additional, Pirenne, F., additional, Negre, O., additional, Ribeil, J.-A., additional, Brousse, V., additional, De Montalembert, M., additional, Asmal, M., additional, Bartolucci, P., additional, and Cavazzana, M., additional
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- 2019
- Full Text
- View/download PDF
10. Glycophorin-C sialylation regulates Lu/BCAM adhesive capacity during erythrocyte aging
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Klei, T. R. L., primary, de Back, D. Z., additional, Asif, P. J., additional, Verkuijlen, P. J. J. H., additional, Veldthuis, M., additional, Ligthart, P. C., additional, Berghuis, J., additional, Clifford, E., additional, Beuger, B. M., additional, van den Berg, T. K., additional, van Zwieten, R., additional, El Nemer, W., additional, and van Bruggen, R., additional
- Published
- 2018
- Full Text
- View/download PDF
11. The european hematology association roadmap for european hematology research: A consensus document
- Author
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Engert, A. Balduini, C. Brand, A. Coiffier, B. Cordonnier, C. Döhner, H. De Wit, T.D. Eichinger, S. Fibbe, W. Green, T. De Haas, F. Iolascon, A. Jaffredo, T. Rodeghiero, F. Sall Es, G. Schuringa, J.J. André, M. Andre-Schmutz, I. Bacigalupo, A. Bochud, P.-Y. Den Boer, M. Bonini, C. Camaschella, C. Cant, A. Cappellini, M.D. Cazzola, M. Celso, C.L. Dimopoulos, M. Douay, L. Dzierzak, E. Einsele, H. Ferreri, A. De Franceschi, L. Gaulard, P. Gottgens, B. Greinacher, A. Gresele, P. Gribben, J. De Haan, G. Hansen, J.-B. Hochhaus, A. Kadir, R. Kaveri, S. Kouskoff, V. Kühne, T. Kyrle, P. Ljungman, P. Maschmeyer, G. Méndez-Ferrer, S. Milsom, M. Mummery, C. Ossenkoppele, G. Pecci, A. Peyvandi, F. Philipsen, S. Reitsma, P. Ribera, J.M. Risitano, A. Rivella, S. Ruf, W. Schroeder, T. Scully, M. Socie, G. Staal, F. Stanworth, S. Stauder, R. Stilgenbauer, S. Tamary, H. Theilgaard-Mönch, K. Thein, S.L. Tilly, H. Trneny, M. Vainchenker, W. Vannucchi, A.M. Viscoli, C. Vrielink, H. Zaaijer, H. Zanella, A. Zolla, L. Zwaginga, J.J. Martinez, P.A. Van Den Akker, E. Allard, S. Anagnou, N. Andolfo, I. Andrau, J.-C. Angelucci, E. Anstee, D. Aurer, I. Avet-Loiseau, H. Aydinok, Y. Bakchoul, T. Balduini, A. Barcellini, W. Baruch, D. Baruchel, A. Bayry, J. Bento, C. Van Den Berg, A. Bernardi, R. Bianchi, P. Bigas, A. Biondi, A. Bohonek, M. Bonnet, D. Borchmann, P. Borregaard, N. Brækkan, S. Van Den Brink, M. Brodin, E. Bullinger, L. Buske, C. Butzeck, B. Cammenga, J. Campo, E. Carbone, A. Cervantes, F. Cesaro, S. Charbord, P. Claas, F. Cohen, H. Conard, J. Coppo, P. Vives Corron, J.-L. Da Costa, L. Davi, F. Delwel, R. Dianzani, I. Domanović, D. Donnelly, P. Drnovšek, T.D. Dreyling, M. Du, M.-Q. Dufour, C. Durand, C. Efremov, D. Eleftheriou, A. Elion, J. Emonts, M. Engelhardt, M. Ezine, S. Falkenburg, F. Favier, R. Federico, M. Fenaux, P. Fitzgibbon, J. Flygare, J. Foà, R. Forrester, L. Galacteros, F. Garagiola, I. Gardiner, C. Garraud, O. Van Geet, C. Geiger, H. Geissler, J. Germing, U. Ghevaert, C. Girelli, D. Godeau, B. Gökbuget, N. Goldschmidt, H. Goodeve, A. Graf, T. Graziadei, G. Griesshammer, M. Gruel, Y. Guilhot, F. Von Gunten, S. Gyssens, I. Halter, J. Harrison, C. Harteveld, C. Hellström-Lindberg, E. Hermine, O. Higgs, D. Hillmen, P. Hirsch, H. Hoskin, P. Huls, G. Inati, A. Johnson, P. Kattamis, A. Kiefel, V. Kleanthous, M. Klump, H. Krause, D. Hovinga, J.K. Lacaud, G. Lacroix-Desmazes, S. Landman-Parker, J. Legouill, S. Lenz, G. Von Lilienfeld-Toal, M. Von Lindern, M. Lopez-Guillermo, A. Lopriore, E. Lozano, M. Macintyre, E. Makris, M. Mannhalter, C. Martens, J. Mathas, S. Matzdorff, A. Medvinsky, A. Menendez, P. Migliaccio, A.R. Miharada, K. Mikulska, M. Minard, V. Montalbán, C. De Montalembert, M. Montserrat, E. Morange, P.-E. Mountford, J. Muckenthaler, M. Müller-Tidow, C. Mumford, A. Nadel, B. Navarro, J.-T. El Nemer, W. Noizat-Pirenne, F. O’Mahony, B. Oldenburg, J. Olsson, M. Oostendorp, R. Palumbo, A. Passamonti, F. Patient, R. De Latour, R.P. Pflumio, F. Pierelli, L. Piga, A. Pollard, D. Raaijmakers, M. Radford, J. Rambach, R. Koneti Rao, A. Raslova, H. Rebulla, P. Rees, D. Ribrag, V. Rijneveld, A. Rinalducci, S. Robak, T. Roberts, I. Rodrigues, C. Rosendaal, F. Rosenwald, A. Rule, S. Russo, R. Saglio, G. Sanchez, M. Scharf, R.E. Schlenke, P. Semple, J. Sierra, J. So-Osman, C. Soria, J.M. Stamatopoulos, K. Stegmayr, B. Stunnenberg, H. Swinkels, D. Barata, J.P.T. Taghon, T. Taher, A. Terpos, E. Thachil, J. Tissot, J.D. Touw, I. Toye, A. Trappe, R. Traverse-Glehen, A. Unal, S. Vaulont, S. Viprakasit, V. Vitolo, U. Van Wijk, R. Wójtowicz, A. Zeerleder, S. Zieger, B. EHA Roadmap for European Hematology Research
- Abstract
The European Hematology Association (EHA) Roadmap for European Hematology Research highlights major achievements in diagnosis and treatment of blood disorders and identifies the greatest unmet clinical and scientific needs in those areas to enable better funded, more focused European hematology research. Initiated by the EHA, around 300 experts contributed to the consensus document, which will help European policy makers, research funders, research organizations, researchers, and patient groups make better informed decisions on hematology research. It also aims to raise public awareness of the burden of blood disorders on European society, which purely in economic terms is estimated at ∈ European Hematology Association (EHA) Roadmap for European Hematology Research highlights major achievements in diagnosis and treatment of blood disorders and identifies the greatest unmet clinical and scientific needs in those areas to enable better fu treatments, sometimes in revolutionary ways. This progress highlights the potential of focused basic research programs such as this EHA Roadmap. The EHA Roadmap identifies nine ‘sections’ in hematology: normal hematopoiesis, malignant lymphoid and myeloid diseases, anemias and related diseases, platelet disorders, blood coagulation and hemostatic disorders, transfusion medicine, infections in hematology, and hematopoietic stem cell transplantation. These sections span 60 smaller groups of diseases or disorders. The EHA Roadmap identifies priorities and needs across the field of hematology, including those to develop targeted therapies based on genomic profiling and chemical biology, to eradicate minimal residual malignant disease, and to develop cellular immunotherapies, combination treatments, gene therapies, hematopoietic stem cell treatments, and treatments that are better tolerated by elderly patients. © 2016 Ferrata Storti Foundation.
- Published
- 2016
12. The european hematology association roadmap for european hematology research: A consensus document
- Author
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Engert, A, Balduini, C, Brand, A, Coiffier, B, Cordonnier, C, Döhner, H, De Wit, T, Eichinger, S, Fibbe, W, Green, T, De Haas, F, Iolascon, A, Jaffredo, T, Rodeghiero, F, Sall Es, G, Schuringa, J, André, M, Andre Schmutz, I, Bacigalupo, A, Bochud, P, Den Boer, M, Bonini, C, Camaschella, C, Cant, A, Cappellini, M, Cazzola, M, Celso, C, Dimopoulos, M, Douay, L, Dzierzak, E, Einsele, H, Ferreri, A, De Franceschi, L, Gaulard, P, Gottgens, B, Greinacher, A, Gresele, P, Gribben, J, De Haan, G, Hansen, J, Hochhaus, A, Kadir, R, Kaveri, S, Kouskoff, V, Kühne, T, Kyrle, P, Ljungman, P, Maschmeyer, G, Méndez Ferrer, S, Milsom, M, Mummery, C, Ossenkoppele, G, Pecci, A, Peyvandi, F, Philipsen, S, Reitsma, P, Ribera, J, Risitano, A, Rivella, S, Ruf, W, Schroeder, T, Scully, M, Socie, G, Staal, F, Stanworth, S, Stauder, R, Stilgenbauer, S, Tamary, H, Theilgaard Mönch, K, Thein, S, Tilly, H, Trneny, M, Vainchenker, W, Vannucchi, A, Viscoli, C, Vrielink, H, Zaaijer, H, Zanella, A, Zolla, L, Zwaginga, J, Martinez, P, Van Den Akker, E, Allard, S, Anagnou, N, Andolfo, I, Andrau, J, Angelucci, E, Anstee, D, Aurer, I, Avet Loiseau, H, Aydinok, Y, Bakchoul, T, Balduini, A, Barcellini, W, Baruch, D, Baruchel, A, Bayry, J, Bento, C, Van Den Berg, A, Bernardi, R, Bianchi, P, Bigas, A, Biondi, A, Bohonek, M, Bonnet, D, Borchmann, P, Borregaard, N, Brækkan, S, Van Den Brink, M, Brodin, E, Bullinger, L, Buske, C, Butzeck, B, Cammenga, J, Campo, E, Carbone, A, Cervantes, F, Cesaro, S, Charbord, P, Claas, F, Cohen, H, Conard, J, Coppo, P, Vives Corron, J, Da Costa, L, Davi, F, Delwel, R, Dianzani, I, Domanović, D, Donnelly, P, Drnovšek, T, Dreyling, M, Du, M, Dufour, C, Durand, C, Efremov, D, Eleftheriou, A, Elion, J, Emonts, M, Engelhardt, M, Ezine, S, Falkenburg, F, Favier, R, Federico, M, Fenaux, P, Fitzgibbon, J, Flygare, J, Foà, R, Forrester, L, Galacteros, F, Garagiola, I, Gardiner, C, Garraud, O, Van Geet, C, Geiger, H, Geissler, J, Germing, U, Ghevaert, C, Girelli, D, Godeau, B, Gökbuget, N, Goldschmidt, H, Goodeve, A, Graf, T, Graziadei, G, Griesshammer, M, Gruel, Y, Guilhot, F, Von Gunten, S, Gyssens, I, Halter, J, Harrison, C, Harteveld, C, Hellström Lindberg, E, Hermine, O, Higgs, D, Hillmen, P, Hirsch, H, Hoskin, P, Huls, G, Inati, A, Johnson, P, Kattamis, A, Kiefel, V, Kleanthous, M, Klump, H, Krause, D, Hovinga, J, Lacaud, G, Lacroix Desmazes, S, Landman Parker, J, Legouill, S, Lenz, G, Von Lilienfeld Toal, M, Von Lindern, M, Lopez Guillermo, A, Lopriore, E, Lozano, M, Macintyre, E, Makris, M, Mannhalter, C, Martens, J, Mathas, S, Matzdorff, A, Medvinsky, A, Menendez, P, Migliaccio, A, Miharada, K, Mikulska, M, Minard, V, Montalbán, C, De Montalembert, M, Montserrat, E, Morange, P, Mountford, J, Muckenthaler, M, Müller Tidow, C, Mumford, A, Nadel, B, Navarro, J, El Nemer, W, Noizat Pirenne, F, O’Mahony, B, Oldenburg, J, Olsson, M, Oostendorp, R, Palumbo, A, Passamonti, F, Patient, R, De Latour, R, Pflumio, F, Pierelli, L, Piga, A, Pollard, D, Raaijmakers, M, Radford, J, Rambach, R, Koneti Rao, A, Raslova, H, Rebulla, P, Rees, D, Ribrag, V, Rijneveld, A, Rinalducci, S, Robak, T, Roberts, I, Rodrigues, C, Rosendaal, F, Rosenwald, A, Rule, S, Russo, R, Saglio, G, Sanchez, M, Scharf, R, Schlenke, P, Semple, J, Sierra, J, So Osman, C, Soria, J, Stamatopoulos, K, Stegmayr, B, Stunnenberg, H, Swinkels, D, Barata, J, Taghon, T, Taher, A, Terpos, E, Thachil, J, Tissot, J, Touw, I, Toye, A, Trappe, R, Traverse Glehen, A, Unal, S, Vaulont, S, Viprakasit, V, Vitolo, U, Van Wijk, R, Wójtowicz, A, Zeerleder, S, Zieger, B, Zieger, B., ZANELLA, ALBERTO, BIONDI, ANDREA, Engert, A, Balduini, C, Brand, A, Coiffier, B, Cordonnier, C, Döhner, H, De Wit, T, Eichinger, S, Fibbe, W, Green, T, De Haas, F, Iolascon, A, Jaffredo, T, Rodeghiero, F, Sall Es, G, Schuringa, J, André, M, Andre Schmutz, I, Bacigalupo, A, Bochud, P, Den Boer, M, Bonini, C, Camaschella, C, Cant, A, Cappellini, M, Cazzola, M, Celso, C, Dimopoulos, M, Douay, L, Dzierzak, E, Einsele, H, Ferreri, A, De Franceschi, L, Gaulard, P, Gottgens, B, Greinacher, A, Gresele, P, Gribben, J, De Haan, G, Hansen, J, Hochhaus, A, Kadir, R, Kaveri, S, Kouskoff, V, Kühne, T, Kyrle, P, Ljungman, P, Maschmeyer, G, Méndez Ferrer, S, Milsom, M, Mummery, C, Ossenkoppele, G, Pecci, A, Peyvandi, F, Philipsen, S, Reitsma, P, Ribera, J, Risitano, A, Rivella, S, Ruf, W, Schroeder, T, Scully, M, Socie, G, Staal, F, Stanworth, S, Stauder, R, Stilgenbauer, S, Tamary, H, Theilgaard Mönch, K, Thein, S, Tilly, H, Trneny, M, Vainchenker, W, Vannucchi, A, Viscoli, C, Vrielink, H, Zaaijer, H, Zanella, A, Zolla, L, Zwaginga, J, Martinez, P, Van Den Akker, E, Allard, S, Anagnou, N, Andolfo, I, Andrau, J, Angelucci, E, Anstee, D, Aurer, I, Avet Loiseau, H, Aydinok, Y, Bakchoul, T, Balduini, A, Barcellini, W, Baruch, D, Baruchel, A, Bayry, J, Bento, C, Van Den Berg, A, Bernardi, R, Bianchi, P, Bigas, A, Biondi, A, Bohonek, M, Bonnet, D, Borchmann, P, Borregaard, N, Brækkan, S, Van Den Brink, M, Brodin, E, Bullinger, L, Buske, C, Butzeck, B, Cammenga, J, Campo, E, Carbone, A, Cervantes, F, Cesaro, S, Charbord, P, Claas, F, Cohen, H, Conard, J, Coppo, P, Vives Corron, J, Da Costa, L, Davi, F, Delwel, R, Dianzani, I, Domanović, D, Donnelly, P, Drnovšek, T, Dreyling, M, Du, M, Dufour, C, Durand, C, Efremov, D, Eleftheriou, A, Elion, J, Emonts, M, Engelhardt, M, Ezine, S, Falkenburg, F, Favier, R, Federico, M, Fenaux, P, Fitzgibbon, J, Flygare, J, Foà, R, Forrester, L, Galacteros, F, Garagiola, I, Gardiner, C, Garraud, O, Van Geet, C, Geiger, H, Geissler, J, Germing, U, Ghevaert, C, Girelli, D, Godeau, B, Gökbuget, N, Goldschmidt, H, Goodeve, A, Graf, T, Graziadei, G, Griesshammer, M, Gruel, Y, Guilhot, F, Von Gunten, S, Gyssens, I, Halter, J, Harrison, C, Harteveld, C, Hellström Lindberg, E, Hermine, O, Higgs, D, Hillmen, P, Hirsch, H, Hoskin, P, Huls, G, Inati, A, Johnson, P, Kattamis, A, Kiefel, V, Kleanthous, M, Klump, H, Krause, D, Hovinga, J, Lacaud, G, Lacroix Desmazes, S, Landman Parker, J, Legouill, S, Lenz, G, Von Lilienfeld Toal, M, Von Lindern, M, Lopez Guillermo, A, Lopriore, E, Lozano, M, Macintyre, E, Makris, M, Mannhalter, C, Martens, J, Mathas, S, Matzdorff, A, Medvinsky, A, Menendez, P, Migliaccio, A, Miharada, K, Mikulska, M, Minard, V, Montalbán, C, De Montalembert, M, Montserrat, E, Morange, P, Mountford, J, Muckenthaler, M, Müller Tidow, C, Mumford, A, Nadel, B, Navarro, J, El Nemer, W, Noizat Pirenne, F, O’Mahony, B, Oldenburg, J, Olsson, M, Oostendorp, R, Palumbo, A, Passamonti, F, Patient, R, De Latour, R, Pflumio, F, Pierelli, L, Piga, A, Pollard, D, Raaijmakers, M, Radford, J, Rambach, R, Koneti Rao, A, Raslova, H, Rebulla, P, Rees, D, Ribrag, V, Rijneveld, A, Rinalducci, S, Robak, T, Roberts, I, Rodrigues, C, Rosendaal, F, Rosenwald, A, Rule, S, Russo, R, Saglio, G, Sanchez, M, Scharf, R, Schlenke, P, Semple, J, Sierra, J, So Osman, C, Soria, J, Stamatopoulos, K, Stegmayr, B, Stunnenberg, H, Swinkels, D, Barata, J, Taghon, T, Taher, A, Terpos, E, Thachil, J, Tissot, J, Touw, I, Toye, A, Trappe, R, Traverse Glehen, A, Unal, S, Vaulont, S, Viprakasit, V, Vitolo, U, Van Wijk, R, Wójtowicz, A, Zeerleder, S, Zieger, B, Zieger, B., ZANELLA, ALBERTO, and BIONDI, ANDREA
- Abstract
The European Hematology Association (EHA) Roadmap for European Hematology Research highlights major achievements in diagnosis and treatment of blood disorders and identifies the greatest unmet clinical and scientific needs in those areas to enable better funded, more focused European hematology research. Initiated by the EHA, around 300 experts contributed to the consensus document, which will help European policy makers, research funders, research organizations, researchers, and patient groups make better informed decisions on hematology research. It also aims to raise public awareness of the burden of blood disorders on European society, which purely in economic terms is estimated at ∈ European Hematology Association (EHA) Roadmap for European Hematology Research highlights major achievements in diagnosis and treatment of blood disorders and identifies the greatest unmet clinical and scientific needs in those areas to enable better fu treatments, sometimes in revolutionary ways. This progress highlights the potential of focused basic research programs such as this EHA Roadmap. The EHA Roadmap identifies nine ‘sections’ in hematology: normal hematopoiesis, malignant lymphoid and myeloid diseases, anemias and related diseases, platelet disorders, blood coagulation and hemostatic disorders, transfusion medicine, infections in hematology, and hematopoietic stem cell transplantation. These sections span 60 smaller groups of diseases or disorders. The EHA Roadmap identifies priorities and needs across the field of hematology, including those to develop targeted therapies based on genomic profiling and chemical biology, to eradicate minimal residual malignant disease, and to develop cellular immunotherapies, combination treatments, gene therapies, hematopoietic stem cell treatments, and treatments that are better tolerated by elderly patients.
- Published
- 2016
13. Antigènes mineurs de groupe sanguin et adhérence des globules rouges : des marqueurs prédictifs de l’évolution de la pathologie drépanocytaire chez le très jeune enfant ?
- Author
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Brousse, V., primary, Colin, Y., additional, De Montalembert, M., additional, Le Van Kim, C., additional, and El Nemer, W., additional
- Published
- 2015
- Full Text
- View/download PDF
14. Antigènes Luthéran et maladies
- Author
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Le Van Kim, C., primary, Franco, M., additional, Colin Aronovicz, Y., additional, and El Nemer, W., additional
- Published
- 2013
- Full Text
- View/download PDF
15. Human induced pluripotent stem cells can reach complete terminal maturation: in vivo and in vitro evidence in the erythropoietic differentiation model
- Author
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Kobari, L., primary, Yates, F., additional, Oudrhiri, N., additional, Francina, A., additional, Kiger, L., additional, Mazurier, C., additional, Rouzbeh, S., additional, El-Nemer, W., additional, Hebert, N., additional, Giarratana, M.-C., additional, Francois, S., additional, Chapel, A., additional, Lapillonne, H., additional, Luton, D., additional, Bennaceur-Griscelli, A., additional, and Douay, L., additional
- Published
- 2012
- Full Text
- View/download PDF
16. Aggregation of mononuclear and red blood cells through an 4 1-Lu/basal cell adhesion molecule interaction in sickle cell disease
- Author
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Chaar, V., primary, Picot, J., additional, Renaud, O., additional, Bartolucci, P., additional, Nzouakou, R., additional, Bachir, D., additional, Galacteros, F., additional, Colin, Y., additional, Le Van Kim, C., additional, and El Nemer, W., additional
- Published
- 2010
- Full Text
- View/download PDF
17. Red blood cell adhesion molecule modifications potentiated adhesion, cytokine secretion and altered endothelial cell functions
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Wautier, J.-L., primary, El Nemer, W., additional, Boulanger, E., additional, Grossin, N., additional, Le Van Kim, C., additional, and Wautier, M.-P., additional
- Published
- 2006
- Full Text
- View/download PDF
18. Papers to be published in forthcoming issues. Toward more effective antifungal therapy: the prospects of combination therapy. Myeloma cells can directly contribute to the pool of RANKL in bone bypassing the classic stromal and osteoblast pathway of osteoc
- Author
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Kontoyiannis, D. P., primary, Lewis, R. E., additional, Lai, F. P. L., additional, Cole-Sinclair, M., additional, Cheng, W.-J., additional, Quinn, J. M. W., additional, Gillespie, M. T., additional, Sentry, J. W., additional, Schneider, H.-G., additional, Kroft, S. H., additional, Asplund, S. L., additional, McKenna, R. W., additional, Karandikar, N. J., additional, Mannucci, P. M., additional, Capoferri, C., additional, Canciani, M. T., additional, Bord, S., additional, Frith, E., additional, Ireland, D. C., additional, Scott, M. A., additional, Craig, J. I. O., additional, Compston, J. E, additional, Kroviarski, Y., additional, El Nemer, W., additional, Gane, P., additional, Rahuel, C., additional, Gauthier, E., additional, Lecomte, M. C., additional, Cartron, J. P., additional, Colin, Y., additional, Le Van Kim, C., additional, Lee, E., additional, Burgess, G., additional, Halverson, G. R., additional, Huang, T. J., additional, Reid, M. E., additional, Breit, S., additional, Nees, M., additional, Schaefer, U., additional, Pfoersich, M., additional, Hagemeier, C., additional, Muckenthaler, M., additional, Kulozik, A. E., additional, Okada, H., additional, Takagi, A., additional, Murate, T., additional, Adachi, T., additional, Yamamoto, K., additional, Matsushita, T., additional, Takamatsu, J., additional, Sugita, K., additional, Sugimoto, M., additional, Yoshioka, A., additional, Yamazaki, T., additional, Saito, H., additional, and Kojima, T., additional
- Published
- 2004
- Full Text
- View/download PDF
19. Isoforms of the Lutheran/basal cell adhesion molecule glycoprotein are differentially delivered in polarized epithelial cells. Mapping of the basolateral sorting signal to a cytoplasmic di-leucine motif.
- Author
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El Nemer, W, Colin, Y, Bauvy, C, Codogno, P, Fraser, R H, Cartron, J P, and Le Van Kim, C L
- Abstract
Lu and Lu(v13) are two glycoprotein (gp) isoforms that belong to the immunoglobulin superfamily and carry both the Lutheran (Lu) blood group antigens and the basal cell adhesion molecule epithelial cancer antigen. Lu (85 kDa) and Lu(v13) (78 kDa) gps, which differ only in the length of their cytoplasmic domain, are adhesion molecules that bind laminin. In nonerythroid tissues, the Lu/basal cell adhesion molecule antigens are predominantly expressed in the endothelium of blood vessel walls and in the basement membrane region of normal epithelial cells, whereas they exhibit a nonpolarized expression in some epithelial cancers. Here, we analyzed the polarization of Lu and Lu(v13) gps in epithelial cells by confocal microscopy and domain-selective biotinylation assays. Differentiated human colon carcinoma Caco-2 cells exhibited a polarized expression of endogenous Lu antigens associated with a predominant expression of the Lu isoform at the basolateral domain of the plasma membrane and a very low expression of the Lu(v13) isoform at both the apical and basolateral domains. Analysis of transfected Madin-Darby canine kidney cells revealed a basolateral expression of Lu gp and a nonpolarized expression of Lu(v13) gp. Delivery of Lu(v13) to both apical and basolateral surfaces showed similar kinetics, indicating that this isoform is directly transported to each surface domain. A dileucine motif at position 608-609, specific to the Lu isoform, was characterized as a dominant basolateral sorting signal that prevents Lu gp from taking the apical delivery pathway.
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- 1999
20. The Lutheran blood group glycoproteins, the erythroid receptors for laminin, are adhesion molecules.
- Author
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El Nemer, W, Gane, P, Colin, Y, Bony, V, Rahuel, C, Galactéros, F, Cartron, J P, and Le Van Kim, C
- Abstract
The Lutheran antigens are recently characterized glycoproteins in which the extracellular region contains five immunoglobulin like domains, suggesting some recognition function. A recent abstract suggests that the Lutheran glycoproteins (Lu gps) act as erythrocyte receptors for soluble laminin (Udani, M., Jefferson, S., Daymont, C., Zen, Q., and Telen, M. J. (1996) Blood 88, Suppl. 1, 6 (abstr.)). In the present report, we provided the definitive proof of the laminin receptor function of the Lu gps by demonstrating that stably transfected cells (murine L929 and human K562 cell lines) expressing the Lu gps bound laminin in solution and acquired adhesive properties to laminin-coated plastic dishes but not to fibronectin, vitronectin, transferrin, fibrinogen, or fibrin. Furthermore, expression of either the long-tail (85 kDa) or the short-tail (78 kDa) Lu gps, which differ by the presence or the absence of the last 40 amino acids of the cytoplasmic domain, respectively, conferred to transfected cells the same laminin binding capacity. We also confirmed by flow cytometry analysis that the level of laminin binding to red cells is correlated with the level of Lu antigen expression. Indeed, Lunull cells did not bind to laminin, whereas sickle cells from most patients homozygous for hemoglobin S overexpressed Lu antigens and exhibited an increased binding to laminin, as compared with normal red cells. Laminin binding to normal and sickle red cells as well as to Lu transfected cells was totally inhibited by a soluble Lu-Fc chimeric fragment containing the extracellular domain of the Lu gps. During in vitro erythropoiesis performed by two-phase liquid cultures of human peripheral blood, the appearance of Lu antigens in late erythroid differentiation was concomitant with the laminin binding capacity of the cultured erythroblasts. Altogether, our results demonstrated that long-tail and short-tail Lu gps are adhesion molecules that bind equally well laminin and strongly suggested that these glycoproteins are the unique receptors for laminin in normal and sickle mature red cells as well as in erythroid progenitors.
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- 1998
21. The European Hematology Association Roadmap for European Hematology Research: a consensus document
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Engert, Andreas, Balduini, Carlo, Brand, Anneke, Coiffier, Bertrand, Cordonnier, Catherine, Doehner, Hartmut, de Wit, Thom Duyvene, Eichinger, Sabine, Fibbe, Willem, Green, Tony, de Haas, Fleur, Iolascon, Achille, Jaffredo, Thierry, Rodeghiero, Francesco, Salles, Gilles, Schuringa, Jan Jacob, Andre, Marc, Andre-Schmutz, Isabelle, Bacigalupo, Andrea, Bochud, Pierre-Yves, den Boer, Monique, Bonini, Chiara, Camaschella, Clara, Cant, Andrew, Cappellini, Maria Domenica, Cazzola, Mario, Lo Celso, Cristina, Dimopoulos, Meletios, Douay, Luc, Dzierzak, Elaine, Einsele, Hermann, Ferreri, Andres, De Franceschi, Lucia, Gaulard, Philippe, Gottgens, Berthold, Greinacher, Andreas, Gresele, Paolo, Gribben, John, de Haan, Gerald, Hansen, John-Bjarne, Hochhaus, Andreas, Kadir, Rezan, Kaveri, Srini, Kouskoff, Valerie, Kuehne, Thomas, Kyrle, Paul, Ljungman, Per, Maschmeyer, Georg, Mendez-Ferrer, Simon, Milsom, Michael, Mummery, Christine, Ossenkoppele, Gert, Pecci, Alessandro, Peyvandi, Flora, Philipsen, Sjaak, Reitsma, Pieter, Maria Ribera, Jose, Risitano, Antonio, Rivella, Stefano, Ruf, Wolfram, Schroeder, Timm, Scully, Marie, Socie, Gerard, Staal, Frank, Stanworth, Simon, Stauder, Reinhard, Stilgenbauer, Stephan, Tamary, Hannah, Theilgaard-Monch, Kim, Thein, Swee Lay, Tilly, Herve, Trneny, Marek, Vainchenker, William, Vannucchi, Alessandro Maria, Viscoli, Claudio, Vrielink, Hans, Zaaijer, Hans, Zanella, Alberto, Zolla, Lello, Zwaginga, Jaap Jan, Martinez, Patricia Aguilar, van den Akker, Emile, Allard, Shubha, Anagnou, Nicholas, Andolfo, Immacolata, Andrau, Jean-Christophe, Angelucci, Emanuele, Anstee, David, Aurer, Igor, Avet-Loiseau, Herve, Aydinok, Yesim, Bakchoul, Tamam, Balduini, Alessandra, Barcellini, Wilma, Baruch, Dominique, Baruchel, Andre, Bayry, Jagadeesh, Bento, Celeste, van den Berg, Anke, Bernardi, Rosa, Bianchi, Paola, Bigas, Anna, Biondi, Andrea, Bohonek, Milos, Bonnet, Dominique, Borchmann, Peter, Borregaard, Niels, Braekkan, Sigrid, van den Brink, Marcel, Brodin, Ellen, Bullinger, Lars, Buske, Christian, Butzeck, Barbara, Cammenga, Jorg, Campo, Elias, Carbone, Antonino, Cervantes, Francisco, Cesaro, Simone, Charbord, Pierre, Claas, Frans, Cohen, Hannah, Conard, Jacqueline, Coppo, Paul, Vives Corrons, Joan-Lluis, da Costa, Lydie, Davi, Frederic, Delwel, Ruud, Dianzani, Irma, Domanovic, Dragoslav, Donnelly, Peter, Drnovsek, Tadeja Dovc, Dreyling, Martin, Du, Ming-Qing, Dufour, Carlo, Durand, Charles, Efremov, Dimitar, Eleftheriou, Androulla, Elion, Jacques, Emonts, Marieke, Engelhardt, Monika, Ezine, Sophie, Falkenburg, Fred, Favier, Remi, Federico, Massimo, Fenaux, Pierre, Fitzgibbon, Jude, Flygare, Johan, Foa, Robin, Forrester, Lesley, Galacteros, Frederic, Garagiola, Isabella, Gardiner, Chris, Garraud, Olivier, van Geet, Christel, Geiger, Hartmut, Geissler, Jan, Germing, Ulrich, Ghevaert, Cedric, Girelli, Domenico, Godeau, Bertrand, Goekbuget, Nicola, Goldschmidt, Hartmut, Goodeve, Anne, Graf, Thomas, Graziadei, Giovanna, Griesshammer, Martin, Gruel, Yves, Guilhot, Francois, von Gunten, Stephan, Gyssens, Inge, Halter, Jorg, Harrison, Claire, Harteveld, Cornelis, Hellstrom-Lindberg, Eva, Hermine, Olivier, Higgs, Douglas, Hillmen, Peter, Hirsch, Hans, Hoskin, Peter, Huls, Gerwin, Inati, Adlette, Johnson, Peter, Kattamis, Antonis, Kiefel, Volker, Kleanthous, Marina, Klump, Hannes, Krause, Daniela, Hovinga, Johanna Kremer, Lacaud, Georges, Lacroix-Desmazes, Sebastien, Landman-Parker, Judith, LeGouill, Steven, Lenz, Georg, von Lilienfeld-Toal, Marie, von Lindern, Marieke, Lopez-Guillermo, Armando, Lopriore, Enrico, Lozano, Miguel, MacIntyre, Elizabeth, Makris, Michael, Mannhalter, Christine, Martens, Joost, Mathas, Stephan, Matzdorff, Axel, Medvinsky, Alexander, Menendez, Pablo, Migliaccio, Anna Rita, Miharada, Kenichi, Mikulska, Malgorzata, Minard, Veronique, Montalban, Carlos, de Montalembert, Mariane, Montserrat, Emili, Morange, Pierre-Emmanuel, Mountford, Joanne, Muckenthaler, Martina, Mueller-Tidow, Carsten, Mumford, Andrew, Nadel, Bertrand, Navarro, Jose-Tomas, el Nemer, Wassim, Noizat-Pirenne, France, O'Mahony, Brian, Oldenburg, Johannes, Olsson, Martin, Oostendorp, Robert, Palumbo, Antonio, Passamonti, Francesco, Patient, Roger, de Latour, Regis Peffault, Pflumio, Francoise, Pierelli, Luca, Piga, Antonio, Pollard, Debra, Raaijmakers, Marc, Radford, John, Rambach, Ralf, Rao, A. Koneti, Raslova, Hana, Rebulla, Paolo, Rees, David, Ribrag, Vincent, Rijneveld, Anita, Rinalducci, Sara, Robak, Tadeusz, Roberts, Irene, Rodrigues, Charlene, Rosendaal, Frits, Rosenwald, Andreas, Rule, Simon, Russo, Roberta, Saglio, Guiseppe, Sanchez, Mayka, Scharf, Ruediger E., Schlenke, Peter, Semple, John, Sierra, Jorge, So-Osman, Cynthia, Manuel Soria, Jose, Stamatopoulos, Kostas, Stegmayr, Bernd, Stunnenberg, Henk, Swinkels, Dorine, Taborda Barata, Joao Pedro, Taghon, Tom, Taher, Ali, Terpos, Evangelos, Thachil, Jecko, Tissot, Jean Daniel, Touw, Ivo, Toye, Ash, Trappe, Ralf, Traverse-Glehen, Alexandra, Unal, Sule, Vaulont, Sophie, Viprakasit, Vip, Vitolo, Umberto, van Wijk, Richard, Wojtowicz, Agnieszka, Zeerleder, Sacha, Zieger, Barbara, 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), Université Pierre et Marie Curie - Paris 6 - UFR de Médecine Pierre et Marie Curie (UPMC), Université Pierre et Marie Curie - Paris 6 (UPMC), Université Sorbonne Paris Cité (USPC), Institut National de la Santé et de la Recherche Médicale (INSERM), University Hospital of Cologne [Cologne], Laboratoire de Biologie du Développement (LBD), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Biologie Paris Seine (IBPS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), 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), Hospices Civils de Lyon (HCL), Department of Internal Medicine I, Medizinische Universität Wien = Medical University of Vienna, Service d'Hématologie [CHRU Nancy], Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Ege Üniversitesi, Engert, Andrea, Balduini, Carlo, Brand, Anneke, Coiffier, Bertrand, Cordonnier, Catherine, Döhner, Hartmut, De Wit, Thom Duyvené, Eichinger, Sabine, Fibbe, Willem, Green, Tony, De Haas, Fleur, Iolascon, Achille, Jaffredo, Thierry, Rodeghiero, Francesco, Sall Es, Gille, Schuringa, Jan Jacob, André, Marc, Andre Schmutz, Isabelle, Bacigalupo, Andrea, Bochud, Pierre Yve, Den Boer, Monique, Bonini, Chiara, Camaschella, Clara, Cant, Andrew, Cappellini, Maria Domenica, Cazzola, Mario, Celso, Cristina Lo, Dimopoulos, Meletio, Douay, Luc, Dzierzak, Elaine, Einsele, Hermann, Ferreri, André, De Franceschi, Lucia, Gaulard, Philippe, Gottgens, Berthold, Greinacher, Andrea, Gresele, Paolo, Gribben, John, De Haan, Gerald, Hansen, John Bjarne, Hochhaus, Andrea, Kadir, Rezan, Kaveri, Srini, Kouskoff, Valerie, Kühne, Thoma, Kyrle, Paul, Ljungman, Per, Maschmeyer, Georg, Méndez Ferrer, Simón, Milsom, Michael, Mummery, Christine, Ossenkoppele, Gert, Pecci, Alessandro, Peyvandi, Flora, Philipsen, Sjaak, Reitsma, Pieter, Ribera, José Maria, Risitano, ANTONIO MARIA, Rivella, Stefano, Ruf, Wolfram, Schroeder, Timm, Scully, Marie, Socie, Gerard, Staal, Frank, Stanworth, Simon, Stauder, Reinhard, Stilgenbauer, Stephan, Tamary, Hannah, Theilgaard Mönch, Kim, Thein, Swee Lay, Tilly, Hervé, Trneny, Marek, Vainchenker, William, Vannucchi, Alessandro Maria, Viscoli, Claudio, Vrielink, Han, Zaaijer, Han, Zanella, Alberto, Zolla, Lello, Zwaginga, Jaap Jan, Martinez, Patricia Aguilar, Van Den Akker, Emile, Allard, Shubha, Anagnou, Nichola, Andolfo, Immacolata, Andrau, Jean Christophe, Angelucci, Emanuele, Anstee, David, Aurer, Igor, Avet Loiseau, Hervé, Aydinok, Yesim, Bakchoul, Tamam, Balduini, Alessandra, Barcellini, Wilma, Baruch, Dominique, Baruchel, André, Bayry, Jagadeesh, Bento, Celeste, Van Den Berg, Anke, Bernardi, Rosa, Bianchi, Paola, Bigas, Anna, Biondi, Andrea, Bohonek, Milo, Bonnet, Dominique, Borchmann, Peter, Borregaard, Niel, Brækkan, Sigrid, Van Den Brink, Marcel, Brodin, Ellen, Bullinger, Lar, Buske, Christian, Butzeck, Barbara, Cammenga, Jörg, Campo, Elia, Carbone, Antonino, Cervantes, Francisco, Cesaro, Simone, Charbord, Pierre, Claas, Fran, Cohen, Hannah, Conard, Jacqueline, Coppo, Paul, Vives Corron, Joan Llui, Da Costa, Lydie, Davi, Frederic, Delwel, Ruud, Dianzani, Irma, Domanović, Dragoslav, Donnelly, Peter, Drnovšek, Tadeja Dovč, Dreyling, Martin, Du, Ming Qing, Dufour, Carlo, Durand, Charle, Efremov, Dimitar, Eleftheriou, Androulla, Elion, Jacque, Emonts, Marieke, Engelhardt, Monika, Ezine, Sophie, Falkenburg, Fred, Favier, Remi, Federico, Massimo, Fenaux, Pierre, Fitzgibbon, Jude, Flygare, Johan, Foà, Robin, Forrester, Lesley, Galacteros, Frederic, Garagiola, Isabella, Gardiner, Chri, Garraud, Olivier, Van Geet, Christel, Geiger, Hartmut, Geissler, Jan, Germing, Ulrich, Ghevaert, Cedric, Girelli, Domenico, Godeau, Bertrand, Gökbuget, Nicola, Goldschmidt, Hartmut, Goodeve, Anne, Graf, Thoma, Graziadei, Giovanna, Griesshammer, Martin, Gruel, Yve, Guilhot, Francoi, Von Gunten, Stephan, Gyssens, Inge, Halter, Jörg, Harrison, Claire, Harteveld, Corneli, Hellström Lindberg, Eva, Hermine, Olivier, Higgs, Dougla, Hillmen, Peter, Hirsch, Han, Hoskin, Peter, Huls, Gerwin, Inati, Adlette, Johnson, Peter, Kattamis, Antoni, Kiefel, Volker, Kleanthous, Marina, Klump, Hanne, Krause, Daniela, Hovinga, Johanna Kremer, Lacaud, George, Lacroix Desmazes, Sébastien, Landman Parker, Judith, Legouill, Steven, Lenz, Georg, Von Lilienfeld Toal, Marie, Von Lindern, Marieke, Lopez Guillermo, Armando, Lopriore, Enrico, Lozano, Miguel, Macintyre, Elizabeth, Makris, Michael, Mannhalter, Christine, Martens, Joost, Mathas, Stephan, Matzdorff, Axel, Medvinsky, Alexander, Menendez, Pablo, Migliaccio, Anna Rita, Miharada, Kenichi, Mikulska, Malgorzata, Minard, Véronique, Montalbán, Carlo, De Montalembert, Mariane, Montserrat, Emili, Morange, Pierre Emmanuel, Mountford, Joanne, Muckenthaler, Martina, Müller Tidow, Carsten, Mumford, Andrew, Nadel, Bertrand, Navarro, Jose Toma, El Nemer, Wassim, Noizat Pirenne, France, O’Mahony, Brian, Oldenburg, Johanne, Olsson, Martin, Oostendorp, Robert, Palumbo, Antonio, Passamonti, Francesco, Patient, Roger, De Latour, Regis Peffault, Pflumio, Francoise, Pierelli, Luca, Piga, Antonio, Pollard, Debra, Raaijmakers, Marc, Radford, John, Rambach, Ralf, Koneti Rao, A., Raslova, Hana, Rebulla, Paolo, Rees, David, Ribrag, Vincent, Rijneveld, Anita, Rinalducci, Sara, Robak, Tadeusz, Roberts, Irene, Rodrigues, Charlene, Rosendaal, Frit, Rosenwald, Andrea, Rule, Simon, Russo, Roberta, Saglio, Guiseppe, Sanchez, Mayka, Scharf, Rüdiger E., Schlenke, Peter, Semple, John, Sierra, Jorge, So Osman, Cynthia, Soria, José Manuel, Stamatopoulos, Kosta, Stegmayr, Bernd, Stunnenberg, Henk, Swinkels, Dorine, Barata, João Pedro Taborda, Taghon, Tom, Taher, Ali, Terpos, Evangelo, Thachil, Jecko, Tissot, Jean Daniel, Touw, Ivo, Toye, Ash, Trappe, Ralf, Traverse Glehen, Alexandra, Unal, Sule, Vaulont, Sophie, Viprakasit, Vip, Vitolo, Umberto, Van Wijk, Richard, Wójtowicz, Agnieszka, Zeerleder, Sacha, Zieger, Barbara, Hematology, 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), University of York [York, UK], Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS), 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), Pediatrics, Cell biology, Erasmus MC other, Pulmonary Medicine, Medical Oncology, Other departments, AII - Amsterdam institute for Infection and Immunity, Medical Microbiology and Infection Prevention, ACS - Amsterdam Cardiovascular Sciences, Clinical Haematology, Engert, A, Balduini, C, Brand, A, Coiffier, B, Cordonnier, C, Döhner, H, De, Wit, Td, Eichinger, S, Fibbe, W, Green, T, de Haas, F, Iolascon, A, Jaffredo, T, Rodeghiero, F, Salles, G, Schuringa, Jj, and the other authors of the EHA Roadmap for European Hematology, Research, Cancer Research UK, Biotechnology and Biological Sciences Research Council (BBSRC), Université Pierre et Marie Curie - Paris 6 (UPMC)-École Pratique des Hautes Études (EPHE), De Wit, T, De Haas, F, Sall Es, G, Schuringa, J, André, M, Andre Schmutz, I, Bacigalupo, A, Bochud, P, Den Boer, M, Bonini, C, Camaschella, C, Cant, A, Cappellini, M, Cazzola, M, Celso, C, Dimopoulos, M, Douay, L, Dzierzak, E, Einsele, H, Ferreri, A, De Franceschi, L, Gaulard, P, Gottgens, B, Greinacher, A, Gresele, P, Gribben, J, De Haan, G, Hansen, J, Hochhaus, A, Kadir, R, Kaveri, S, Kouskoff, V, Kühne, T, Kyrle, P, Ljungman, P, Maschmeyer, G, Méndez Ferrer, S, Milsom, M, Mummery, C, Ossenkoppele, G, Pecci, A, Peyvandi, F, Philipsen, S, Reitsma, P, Ribera, J, Risitano, A, Rivella, S, Ruf, W, Schroeder, T, Scully, M, Socie, G, Staal, F, Stanworth, S, Stauder, R, Stilgenbauer, S, Tamary, H, Theilgaard Mönch, K, Thein, S, Tilly, H, Trneny, M, Vainchenker, W, Vannucchi, A, Viscoli, C, Vrielink, H, Zaaijer, H, Zanella, A, Zolla, L, Zwaginga, J, Martinez, P, Van Den Akker, E, Allard, S, Anagnou, N, Andolfo, I, Andrau, J, Angelucci, E, Anstee, D, Aurer, I, Avet Loiseau, H, Aydinok, Y, Bakchoul, T, Balduini, A, Barcellini, W, Baruch, D, Baruchel, A, Bayry, J, Bento, C, Van Den Berg, A, Bernardi, R, Bianchi, P, Bigas, A, Biondi, A, Bohonek, M, Bonnet, D, Borchmann, P, Borregaard, N, Brækkan, S, Van Den Brink, M, Brodin, E, Bullinger, L, Buske, C, Butzeck, B, Cammenga, J, Campo, E, Carbone, A, Cervantes, F, Cesaro, S, Charbord, P, Claas, F, Cohen, H, Conard, J, Coppo, P, Vives Corron, J, Da Costa, L, Davi, F, Delwel, R, Dianzani, I, Domanović, D, Donnelly, P, Drnovšek, T, Dreyling, M, Du, M, Dufour, C, Durand, C, Efremov, D, Eleftheriou, A, Elion, J, Emonts, M, Engelhardt, M, Ezine, S, Falkenburg, F, Favier, R, Federico, M, Fenaux, P, Fitzgibbon, J, Flygare, J, Foà, R, Forrester, L, Galacteros, F, Garagiola, I, Gardiner, C, Garraud, O, Van Geet, C, Geiger, H, Geissler, J, Germing, U, Ghevaert, C, Girelli, D, Godeau, B, Gökbuget, N, Goldschmidt, H, Goodeve, A, Graf, T, Graziadei, G, Griesshammer, M, Gruel, Y, Guilhot, F, Von Gunten, S, Gyssens, I, Halter, J, Harrison, C, Harteveld, C, Hellström Lindberg, E, Hermine, O, Higgs, D, Hillmen, P, Hirsch, H, Hoskin, P, Huls, G, Inati, A, Johnson, P, Kattamis, A, Kiefel, V, Kleanthous, M, Klump, H, Krause, D, Hovinga, J, Lacaud, G, Lacroix Desmazes, S, Landman Parker, J, Legouill, S, Lenz, G, Von Lilienfeld Toal, M, Von Lindern, M, Lopez Guillermo, A, Lopriore, E, Lozano, M, Macintyre, E, Makris, M, Mannhalter, C, Martens, J, Mathas, S, Matzdorff, A, Medvinsky, A, Menendez, P, Migliaccio, A, Miharada, K, Mikulska, M, Minard, V, Montalbán, C, De Montalembert, M, Montserrat, E, Morange, P, Mountford, J, Muckenthaler, M, Müller Tidow, C, Mumford, A, Nadel, B, Navarro, J, El Nemer, W, Noizat Pirenne, F, O’Mahony, B, Oldenburg, J, Olsson, M, Oostendorp, R, Palumbo, A, Passamonti, F, Patient, R, De Latour, R, Pflumio, F, Pierelli, L, Piga, A, Pollard, D, Raaijmakers, M, Radford, J, Rambach, R, Koneti Rao, A, Raslova, H, Rebulla, P, Rees, D, Ribrag, V, Rijneveld, A, Rinalducci, S, Robak, T, Roberts, I, Rodrigues, C, Rosendaal, F, Rosenwald, A, Rule, S, Russo, R, Saglio, G, Sanchez, M, Scharf, R, Schlenke, P, Semple, J, Sierra, J, So Osman, C, Soria, J, Stamatopoulos, K, Stegmayr, B, Stunnenberg, H, Swinkels, D, Barata, J, Taghon, T, Taher, A, Terpos, E, Thachil, J, Tissot, J, Touw, I, Toye, A, Trappe, R, Traverse Glehen, A, Unal, S, Vaulont, S, Viprakasit, V, Vitolo, U, Van Wijk, R, Wójtowicz, A, Zeerleder, S, Zieger, B, Andreas Engert, Carlo Balduini, Anneke Brand, Bertrand Coiffier, Catherine Cordonnier, Hartmut Döhner, Thom Duyvené de Wit, Sabine Eichinger, Willem Fibbe, Tony Green, Fleur de Haas, Achille Iolascon, Thierry Jaffredo, Francesco Rodeghiero, Gilles Salles, Jan Jacob Schuringa, the other authors of the EHA Roadmap for European Hematology Research, Anna Rita Migliaccio, EHA Roadmap for European Hematology, Research, Engert, A., Balduini, C., Brand, A., Coiffier, B., Cordonnier, C., Döhner, H., de Wit TD., Eichinger, S., Fibbe, W., Green, T., de Haas, F., Iolascon, A., Jaffredo, T., Rodeghiero, F., Salles, G., Schuringa, JJ., André, M., Andre-Schmutz, I., Bacigalupo, A., Bochud, PY., Boer, Md., Bonini, C., Camaschella, C., Cant, A., Cappellini, MD., Cazzola, M., Celso, CL., Dimopoulos, M., Douay, L., Dzierzak, E., Einsele, H., Ferreri, A., De Franceschi, L., Gaulard, P., Gottgens, B., Greinacher, A., Gresele, P., Gribben, J., de Haan, G., Hansen, JB., Hochhaus, A., Kadir, R., Kaveri, S., Kouskoff, V., Kühne, T., Kyrle, P., Ljungman, P., Maschmeyer, G., Méndez-Ferrer£££Simón£££ S., Milsom, M., Mummery, C., Ossenkoppele, G., Pecci, A., Peyvandi, F., Philipsen, S., Reitsma, P., Ribera, JM., Risitano, A., Rivella, S., Ruf, W., Schroeder, T., Scully, M., Socie, G., Staal, F., Stanworth, S., Stauder, R., Stilgenbauer, S., Tamary, H., Theilgaard-Mönch, K., Thein, SL., Tilly, H., Trneny, M., Vainchenker, W., Vannucchi, AM., Viscoli, C., Vrielink, H., Zaaijer, H., Zanella, A., Zolla, L., Zwaginga, JJ., Martinez, PA., van den Akker, E., Allard, S., Anagnou, N., Andolfo, I., Andrau, JC., Angelucci, E., Anstee, D., Aurer, I., Avet-Loiseau, H., Aydinok, Y., Bakchoul, T., Balduini, A., Barcellini, W., Baruch, D., Baruchel, A., Bayry, J., Bento, C., van den Berg, A., Bernardi, R., Bianchi, P., Bigas, A., Biondi, A., Bohonek, M., Bonnet, D., Borchmann, P., Borregaard, N., Brækkan, S., van den Brink, M., Brodin, E., Bullinger, L., Buske, C., Butzeck, B., Cammenga, J., Campo, E., Carbone, A., Cervantes, F., Cesaro, S., Charbord, P., Claas, F., Cohen, H., Conard, J., Coppo, P., Corrons, JL., Costa, Ld., Davi, F., Delwel, R., Dianzani, I., Domanović, D., Donnelly, P., Drnov?ek£££Tadeja Dovč£££ TD., Dreyling, M., Du, MQ., Dufour, C., Durand, C., Efremov, D., Eleftheriou, A., Elion, J., Emonts, M., Engelhardt, M., Ezine, S., Falkenburg, F., Favier, R., Federico, M., Fenaux, P., Fitzgibbon, J., Flygare, J., Foà, R., Forrester, L., Galacteros, F., Garagiola, I., Gardiner, C., Garraud, O., van Geet, C., Geiger, H., Geissler, J., Germing, U., Ghevaert, C., Girelli, D., Godeau, B., Gökbuget, N., Goldschmidt, H., Goodeve, A., Graf, T., Graziadei, G., Griesshammer, M., Gruel, Y., Guilhot, F., von Gunten, S., Gyssens, I., Halter, J., Harrison, C., Harteveld, C., Hellström-Lindberg, E., Hermine, O., Higgs, D., Hillmen, P., Hirsch, H., Hoskin, P., Huls, G., Inati, A., Johnson, P., Kattamis, A., Kiefel, V., Kleanthous, M., Klump, H., Krause, D., Hovinga, JK., Lacaud, G., Lacroix-Desmazes, S., Landman-Parker, J., LeGouill, S., Lenz, G., von Lilienfeld-Toal, M., von Lindern, M., Lopez-Guillermo, A., Lopriore, E., Lozano, M., MacIntyre, E., Makris, M., Mannhalter, C., Martens, J., Mathas, S., Matzdorff, A., Medvinsky, A., Menendez, P., Migliaccio, AR., Miharada, K., Mikulska, M., Minard, V., Montalbán, C., de Montalembert, M., Montserrat, E., Morange, PE., Mountford, J., Muckenthaler, M., Müller-Tidow, C., Mumford, A., Nadel, B., Navarro, JT., Nemer, We., Noizat-Pirenne, F., O'Mahony, B., Oldenburg, J., Olsson, M., Oostendorp, R., Palumbo, A., Passamonti, F., Patient, R., Peffault, R., Pflumio, F., Pierelli, L., Piga, A., Pollard, D., Raaijmakers, M., Radford, J., Rambach, R., Rao, AK., Raslova, H., Rebulla, P., Rees, D., Ribrag, V., Rijneveld, A., Rinalducci, S., Robak, T., Roberts, I., Rodrigues, C., Rosendaal, F., Rosenwald, A., Rule, S., Russo, R., Saglio, G., Sanchez, M., Scharf, RE., Schlenke, P., Semple, J., Sierra, J., So-Osman, C., Soria, JM., Stamatopoulos, K., Stegmayr, B., Stunnenberg, H., Swinkels, D., Barata£££João Pedro Taborda£££ JP., Taghon, T., Taher, A., Terpos, E., Thachil, J., Tissot, JD., Touw, I., Toye, A., Trappe, R., Traverse-Glehen, A., Unal, S., Vaulont, S., Viprakasit, V., Vitolo, U., van Wijk, R., Wójtowicz, A., Zeerleder, S., Zieger, B., Stem Cell Aging Leukemia and Lymphoma (SALL), and Çocuk Sağlığı ve Hastalıkları
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0301 basic medicine ,Cancer Research ,diagnosis ,Health Services for the Aged ,ACUTE PROMYELOCYTIC LEUKEMIA ,Medizin ,[SDV.IMM.II]Life Sciences [q-bio]/Immunology/Innate immunity ,EHA Roadmap for European Hematology Research ,Antineoplastic Agent ,0302 clinical medicine ,European Hematology Association Roadmap ,Germany ,PERIPHERAL T-CELL ,Medicine and Health Sciences ,Hematopoiesi ,genetics ,Molecular Targeted Therapy ,[SDV.IMM.ALL]Life Sciences [q-bio]/Immunology/Allergology ,ComputingMilieux_MISCELLANEOUS ,Hematology ,Genome ,Hematopoietic Stem Cell Transplantation ,Anemia ,Awareness ,Supply & distribution ,Combined Modality Therapy ,3. Good health ,Europe ,THROMBOPOIETIN-RECEPTOR AGONISTS ,Blood Disorder ,Italy ,Austria ,haematology ,Medicine ,France ,Immunotherapy ,Infection ,[SDV.IMM.ALL] Life Sciences [q-bio]/Immunology/Allergology ,Human ,medicine.medical_specialty ,Thrombopoietin Receptor Agonists ,Consensus ,Patients ,Immunology ,Antineoplastic Agents ,Blood Coagulation ,Gene Expression Profiling ,Genetic Therapy ,Genome, Human ,Hematologic Diseases ,Hematopoiesis ,Humans ,Consensu ,[SDV.CAN]Life Sciences [q-bio]/Cancer ,ACUTE MYELOID-LEUKEMIA ,1102 Cardiovascular Medicine And Haematology ,Genetic therapy ,methods ,03 medical and health sciences ,blood ,Internal medicine ,medicine ,Hematologi ,THROMBOTIC THROMBOCYTOPENIC PURPURA ,[SDV.IMM.II] Life Sciences [q-bio]/Immunology/Innate immunity ,ACUTE LYMPHOBLASTIC-LEUKEMIA ,therapy ,business.industry ,CHRONIC LYMPHOCYTIC-LEUKEMIA ,supply & distribution ,STEM-CELL TRANSPLANTATION ,economics ,Hematologic Disease ,Opinion Article ,Transplantation ,030104 developmental biology ,Family medicine ,therapeutic use ,drug effects ,RANDOMIZED-CONTROLLED-TRIAL ,HEMOLYTIC-UREMIC SYNDROME ,pathology ,business ,chemical synthesis ,030215 immunology ,Stem Cell Transplantation ,transplantation - Abstract
WOS: 000379156300012, PubMed ID: 26819058, The European Hematology Association (EHA) Roadmap for European Hematology Research highlights major achievements in diagnosis and treatment of blood disorders and identifies the greatest unmet clinical and scientific needs in those areas to enable better funded, more focused European hematology research. Initiated by the EHA, around 300 experts contributed to the consensus document, which will help European policy makers, research funders, research organizations, researchers, and patient groups make better informed decisions on hematology research. It also aims to raise public awareness of the burden of blood disorders on European society, which purely in economic terms is estimated at (sic)23 billion per year, a level of cost that is not matched in current European hematology research funding. In recent decades, hematology research has improved our fundamental understanding of the biology of blood disorders, and has improved diagnostics and treatments, sometimes in revolutionary ways. This progress highlights the potential of focused basic research programs such as this EHA Roadmap. The EHA Roadmap identifies nine 'sections' in hematology: normal hematopoiesis, malignant lymphoid and myeloid diseases, anemias and related diseases, platelet disorders, blood coagulation and hemostatic disorders, transfusion medicine, infections in hematology, and hematopoietic stem cell transplantation. These sections span 60 smaller groups of diseases or disorders. The EHA Roadmap identifies priorities and needs across the field of hematology, including those to develop targeted therapies based on genomic profiling and chemical biology, to eradicate minimal residual malignant disease, and to develop cellular immunotherapies, combination treatments, gene therapies, hematopoietic stem cell treatments, and treatments that are better tolerated by elderly patients., Biotechnology and Biological Sciences Research CouncilBiotechnology and Biological Sciences Research Council (BBSRC) [BB/L023776/1, BB/I00050X/1, BB/K021168/1]; Cancer Research UKCancer Research UK [11831]; Medical Research CouncilMedical Research Council UK (MRC) [G1000801a]; Novo Nordisk FondenNovo Nordisk [NNF12OC1015986]; British Heart FoundationBritish Heart Foundation [FS/09/039/27788]; Cancer Research UKCancer Research UK [12765]; Medical Research CouncilMedical Research Council UK (MRC) [MR/L022982/1, MC_UU_12009/8, MC_U137981013, MC_PC_12009]
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- 2016
22. A comparative study of two routinely used protocols for ex vivo erythroid differentiation.
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Godard A, Seute R, Grimaldi A, Granier T, Chiaroni J, El Nemer W, and De Grandis M
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- Humans, Cell Differentiation, Erythrocytes, Erythropoiesis physiology, Antigens, CD34, Erythroid Precursor Cells, Hematopoietic Stem Cells, Erythropoietin
- Abstract
Background: Erythropoiesis is a complex developmental process in which a hematopoietic stem cell undergoes serial divisions and differentiates through well-defined stages to give rise to red blood cells. Over the last decades, several protocols have been developed to perform ex vivo erythroid differentiation, allowing investigation into erythropoiesis and red cell production in health and disease., Results: In the current study, we compared the two commonly used protocols by assessing the differentiation kinetics, synchronisation, and cellular yield, using molecular and cellular approaches. Peripheral blood CD34
+ cells were cultured in a two-phase (2P) or a four-phase (4P) liquid culture (LC) and monitored for 20 days. Both protocols could recapitulate all stages of erythropoiesis and generate reticulocytes, although to different extents. Higher proliferation and viability rates were achieved in the 4P-LC, with a higher degree of terminal differentiation and enucleation, associated with higher levels of the erythroid-specific transcription factors GATA-1, KLF-1, and TAL-1. Although the 2P-LC protocol was less efficient regarding terminal erythroid differentiation and maturation, it showed a higher yield of erythroid progenitors in the erythropoietin (EPO)-free expansion phase., Conclusions: We provide data supporting the use of one protocol or the other to study the biological processes occurring in the early or late stages of erythroid differentiation, depending on the physiological process or pathological defect under investigation in a given study., Competing Interests: Declaration of competing interest The authors declare that they have no competing interests., (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)- Published
- 2024
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23. Age-related Morphofunctional Changes in Sickle Cell Mice Bone Marrow Mesenchymal Stromal Cells.
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Rós FA, da Costa PNM, Milhomens J, de La-Roque DGL, Ferreira FU, de Matos Maçonetto J, de Oliveira Menezes Bonaldo CC, de Carvalho JV, Palma PVB, El Nemer W, Covas DT, and Kashima S
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- Humans, Animals, Mice, Bone Marrow, Mice, Inbred C57BL, Hematopoietic Stem Cells metabolism, Bone Marrow Cells metabolism, Cell Differentiation, Mesenchymal Stem Cells metabolism, Anemia, Sickle Cell
- Abstract
Background and Objectives: Bone marrow mesenchymal stromal cells (BM-MSCs) are key elements of the hematopoietic niche and participate in the regulatory mechanisms of hematopoietic stem cells (HSCs). Hematological diseases can affect MSCs and their functions. However, the dysregulations caused by sickle cell disease (SCD) are not fully elucidated. This work explored changes in BM-MSCs and their relationship with age using sickle cell mice (Townes-SS)., Materials and Methods: BM-MSCs were isolated from Townes-SS, and control groups 30- and 60-day-old Townes-AA and C57BL/6 J., Results: The BM-MSCs showed no morphological differences in culture and demonstrated a murine MSC-like immunophenotypic profile (Sca-1+, CD29+, CD44+, CD90.2+, CD31-, CD45-, and CD117-). Subsequently, all BM-MSCs were able to differentiate into adipocytes and osteocytes in vitro. Finally, 30-day-old BM-MSCs of Townes-SS showed higher expression of genes related to the maintenance of HSCs (Cxcl12, Vegfa, and Angpt1) and lower expression of pro-inflammatory genes (Tnfa and Il-6). However, 60-day-old BM-MSCs of Townes-SS started to show expression of genes related to reduced HSC maintenance and increased expression of pro-inflammatory genes., Conclusion: These results indicates age as a modifying factor of gene expression of BM-MSCs in the context of SCD.
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- 2024
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24. Translatable tool to quantitatively assess the quality of red blood cell units and tailored cultured red blood cells for transfusion.
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Kaestner L, Schlenke P, von Lindern M, and El Nemer W
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- Blood Transfusion, Erythrocytes
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Competing Interests: Competing interests statement:L.K. is a shareholder of Cysmic GmbH. The other authors declare the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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- 2024
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25. Red Blood Cell Contribution to Thrombosis in Polycythemia Vera and Essential Thrombocythemia.
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Grenier JMP, El Nemer W, and De Grandis M
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- Humans, Erythrocytes pathology, Polycythemia Vera, Thrombocythemia, Essential complications, Thrombosis complications, Thrombocytosis pathology
- Abstract
Polycythemia vera (PV) and essential thrombocythemia (ET) are myeloproliferative neoplasms (MPN) characterized by clonal erythrocytosis and thrombocytosis, respectively. The main goal of therapy in PV and ET is to prevent thrombohemorrhagic complications. Despite a debated notion that red blood cells (RBCs) play a passive and minor role in thrombosis, there has been increasing evidence over the past decades that RBCs may play a biological and clinical role in PV and ET pathophysiology. This review summarizes the main mechanisms that suggest the involvement of PV and ET RBCs in thrombosis, including quantitative and qualitative RBC abnormalities reported in these pathologies. Among these abnormalities, we discuss increased RBC counts and hematocrit, that modulate blood rheology by increasing viscosity, as well as qualitative changes, such as deformability, aggregation, expression of adhesion proteins and phosphatidylserine and release of extracellular microvesicles. While the direct relationship between a high red cell count and thrombosis is well-known, the intrinsic defects of RBCs from PV and ET patients are new contributors that need to be investigated in depth in order to elucidate their role and pave the way for new therapeutical strategies.
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- 2024
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26. Relevance of Howell-Jolly body counts for measuring spleen function in sickle cell disease.
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Pourdieu C, El Hoss S, Le Roux E, Pages J, Koehl B, Missud F, Holvoet L, Ithier G, Benkerrou M, Haouari Z, Da Costa L, El Nemer W, Laurance S, Aronovicz YC, Le Van Kim C, Fenneteau O, Lainey E, and Brousse V
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- Humans, Erythrocyte Inclusions, Spleen, Anemia, Sickle Cell
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- 2023
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27. In Humanized Sickle Cell Mice, Imatinib Protects Against Sickle Cell-Related Injury.
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Federti E, Matte A, Recchiuti A, Garello F, Ghigo A, El Nemer W, Terreno E, Amoresano A, Mattoscio D, Turrini F, Lebouef C, Janin A, Pantaleo A, Russo R, Marin M, Iatcencko I, Riccardi V, Siciliano A, Iolascon A, Brugnara C, and De Franceschi L
- Abstract
Drug repurposing is a valuable strategy for rare diseases. Sickle cell disease (SCD) is a rare hereditary hemolytic anemia accompanied by acute and chronic painful episodes, most often in the context of vaso-occlusive crisis (VOC). Although progress in the knowledge of pathophysiology of SCD have allowed the development of new therapeutic options, a large fraction of patients still exhibits unmet therapeutic needs, with persistence of VOCs and chronic disease progression. Here, we show that imatinib, an oral tyrosine kinase inhibitor developed for the treatment of chronic myelogenous leukemia, acts as multimodal therapy targeting signal transduction pathways involved in the pathogenesis of both anemia and inflammatory vasculopathy of humanized murine model for SCD. In addition, imatinib inhibits the platelet-derived growth factor-B-dependent pathway, interfering with the profibrotic response to hypoxia/reperfusion injury, used to mimic acute VOCs. Our data indicate that imatinib might be considered as possible new therapeutic tool for chronic treatment of SCD., (Copyright © 2023 the Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the European Hematology Association.)
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- 2023
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28. Red blood cell proteomics reveal remnant protein biosynthesis and folding pathways in PIEZO1-related hereditary xerocytosis.
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Caulier A, Jankovsky N, Gautier EF, El Nemer W, Guitton C, Ouled-Haddou H, Guillonneau F, Mayeux P, Salnot V, Bruce J, Picard V, and Garçon L
- Abstract
Hereditary xerocytosis is a dominant red cell membrane disorder characterized by an increased leak of potassium from the inside to outside the red blood cell membrane, associated with loss of water leading to red cell dehydration and chronic hemolysis. 90% of cases are related to heterozygous gain of function mutations in PIEZO1, encoding a mechanotransductor that translates a mechanical stimulus into a biological signaling. Data are still required to understand better PIEZO1-HX pathophysiology. Recent studies identified proteomics as an accurate and high-input tool to study erythroid progenitors and circulating red cell physiology. Here, we isolated red blood cells from 5 controls and 5 HX patients carrying an identified and pathogenic PIEZO1 mutation and performed a comparative deep proteomic analysis. A total of 603 proteins were identified among which 56 were differentially expressed (40 over expressed and 16 under expressed) between controls and HX with a homogenous expression profile within each group. We observed relevant modifications in the protein expression profile related to PIEZO1 mutations, identifying two main "knots". The first contained both proteins of the chaperonin containing TCP1 complex involved in the assembly of unfolded proteins, and proteins involved in translation. The second contained proteins involved in ubiquitination. Deregulation of proteins involved in protein biosynthesis was also observed in in vitro -produced reticulocytes after Yoda1 exposure. Thus, our work identifies significant changes in the protein content of PIEZO1-HX erythrocytes, revealing a "PIEZO1 signature" and identifying potentially targetable pathways in this disease characterized by a heterogeneous clinical expression and contra-indication of splenectomy., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Caulier, Jankovsky, Gautier, El Nemer, Guitton, Ouled-Haddou, Guillonneau, Mayeux, Salnot, Bruce, Picard and Garçon.)
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- 2022
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29. Base-editing-mediated dissection of a γ-globin cis-regulatory element for the therapeutic reactivation of fetal hemoglobin expression.
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Antoniou P, Hardouin G, Martinucci P, Frati G, Felix T, Chalumeau A, Fontana L, Martin J, Masson C, Brusson M, Maule G, Rosello M, Giovannangeli C, Abramowski V, de Villartay JP, Concordet JP, Del Bene F, El Nemer W, Amendola M, Cavazzana M, Cereseto A, Romano O, and Miccio A
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- Humans, Fetal Hemoglobin genetics, Fetal Hemoglobin metabolism, gamma-Globins genetics, Hematopoietic Stem Cells metabolism, beta-Thalassemia genetics, beta-Thalassemia therapy, Anemia, Sickle Cell genetics
- Abstract
Sickle cell disease and β-thalassemia affect the production of the adult β-hemoglobin chain. The clinical severity is lessened by mutations that cause fetal γ-globin expression in adult life (i.e., the hereditary persistence of fetal hemoglobin). Mutations clustering ~200 nucleotides upstream of the HBG transcriptional start sites either reduce binding of the LRF repressor or recruit the KLF1 activator. Here, we use base editing to generate a variety of mutations in the -200 region of the HBG promoters, including potent combinations of four to eight γ-globin-inducing mutations. Editing of patient hematopoietic stem/progenitor cells is safe, leads to fetal hemoglobin reactivation and rescues the pathological phenotype. Creation of a KLF1 activator binding site is the most potent strategy - even in long-term repopulating hematopoietic stem/progenitor cells. Compared with a Cas9-nuclease approach, base editing avoids the generation of insertions, deletions and large genomic rearrangements and results in higher γ-globin levels. Our results demonstrate that base editing of HBG promoters is a safe, universal strategy for treating β-hemoglobinopathies., (© 2022. The Author(s).)
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- 2022
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30. Precision Medicine and Sickle Cell Disease.
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El Hoss S, El Nemer W, and Rees DC
- Abstract
Sickle cell disease (SCD) is characterized by variable clinical outcomes, with some patients suffering life-threatening complications during childhood, and others living relatively symptom-free into old age. Because of this variability, there is an important potential role for precision medicine, in which particular different treatments are selected for different groups of patients. However, the application of precision medicine in SCD is limited by difficulties in identifying different prognostic groups and the small number of available treatments. The main genetic determinant of outcomes in SCD is the underlying β-globin genotype, with sickle cell anemia (HbSS) and hemoglobin SC disease (HbSC) forming the 2 major forms of the disease in most populations of African origin. Although there are clear differences in clinical outcomes between these conditions, treatments approaches are very similar, with little evidence on how to treat HbSC in particular. Other genomic information, such as the co-inheritance of α-thalassemia, or high fetal hemoglobin (HbF) levels, is of some prognostic value but insufficient to determine treatments. Precision medicine is further limited by the fact that the 2 main drugs used in SCD, penicillin and hydroxyurea, are currently recommended for all patients. Newer treatments, such as crizanlizumab and voxelotor, raise the possibility that groups will emerge who respond best to particular drugs or combinations. Perhaps the best current example of precision medicine in SCD is the selective use of blood transfusions as primary stroke prevention in children with evidence of cerebral vasculopathy. More precise treatments may emerge as we understand more about the pathology of SCD, including problems with erythropoiesis., (Copyright © 2022 the Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the European Hematology Association.)
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- 2022
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31. An inherited gain-of-function risk allele in EPOR predisposes to familial JAK2 V617F myeloproliferative neoplasms.
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Rabadan Moraes G, Pasquier F, Marzac C, Deconinck E, Damanti CC, Leroy G, El-Khoury M, El Nemer W, Kiladjian JJ, Raslova H, Najman A, Vainchenker W, Marty C, Bellanné-Chantelot C, and Plo I
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- Alleles, Gain of Function Mutation, Humans, Janus Kinase 2 genetics, Janus Kinase 2 metabolism, Mutation, Myeloproliferative Disorders diagnosis, Myeloproliferative Disorders genetics, Polycythemia Vera genetics, Receptors, Erythropoietin genetics, Thrombocythemia, Essential genetics
- Abstract
Myeloproliferative neoplasms (MPN) are mainly sporadic but inherited variants have been associated with higher risk development. Here, we identified an EPOR variant (EPOR
P488S ) in a large family diagnosed with JAK2V617F -positive polycythaemia vera (PV) or essential thrombocytosis (ET). We investigated its functional impact on JAK2V617F clonal amplification in patients and found that the variant allele fraction (VAF) was low in PV progenitors but increase strongly in mature cells. Moreover, we observed that EPORP488S alone induced a constitutive phosphorylation of STAT5 in cell lines or primary cells. Overall, this study points for searching inherited-risk alleles affecting the JAK2/STAT pathway in MPN., (© 2022 British Society for Haematology and John Wiley & Sons Ltd.)- Published
- 2022
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32. Combination of lentiviral and genome editing technologies for the treatment of sickle cell disease.
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Ramadier S, Chalumeau A, Felix T, Othman N, Aknoun S, Casini A, Maule G, Masson C, De Cian A, Frati G, Brusson M, Concordet JP, Cavazzana M, Cereseto A, El Nemer W, Amendola M, Wattellier B, Meneghini V, and Miccio A
- Subjects
- CRISPR-Associated Protein 9 genetics, Fetal Hemoglobin genetics, Humans, beta-Globins genetics, Anemia, Sickle Cell genetics, Anemia, Sickle Cell therapy, Gene Editing methods
- Abstract
Sickle cell disease (SCD) is caused by a mutation in the β-globin gene leading to polymerization of the sickle hemoglobin (HbS) and deformation of red blood cells. Autologous transplantation of hematopoietic stem/progenitor cells (HSPCs) genetically modified using lentiviral vectors (LVs) to express an anti-sickling β-globin leads to some clinical benefit in SCD patients, but it requires high-level transgene expression (i.e., high vector copy number [VCN]) to counteract HbS polymerization. Here, we developed therapeutic approaches combining LV-based gene addition and CRISPR-Cas9 strategies aimed to either knock down the sickle β-globin and increase the incorporation of an anti-sickling globin (AS3) in hemoglobin tetramers, or to induce the expression of anti-sickling fetal γ-globins. HSPCs from SCD patients were transduced with LVs expressing AS3 and a guide RNA either targeting the endogenous β-globin gene or regions involved in fetal hemoglobin silencing. Transfection of transduced cells with Cas9 protein resulted in high editing efficiency, elevated levels of anti-sickling hemoglobins, and rescue of the SCD phenotype at a significantly lower VCN compared to the conventional LV-based approach. This versatile platform can improve the efficacy of current gene addition approaches by combining different therapeutic strategies, thus reducing the vector amount required to achieve a therapeutic VCN and the associated genotoxicity risk., Competing Interests: Declaration of interests V.M. and A.M. are the inventors of two patents describing this gene addition/genome editing platform (WO/2018/220211, “Viral vectors combining gene therapy and genome editing approaches for gene therapy of genetic disorders”; WO/2018/220210, “Recombinant lentiviral vector for stem cell-based gene therapy of sickle cell disorder). The remaining authors declare no competing interests., (Copyright © 2021. Published by Elsevier Inc.)
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- 2022
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33. Long-term outcomes of lentiviral gene therapy for the β-hemoglobinopathies: the HGB-205 trial.
- Author
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Magrin E, Semeraro M, Hebert N, Joseph L, Magnani A, Chalumeau A, Gabrion A, Roudaut C, Marouene J, Lefrere F, Diana JS, Denis A, Neven B, Funck-Brentano I, Negre O, Renolleau S, Brousse V, Kiger L, Touzot F, Poirot C, Bourget P, El Nemer W, Blanche S, Tréluyer JM, Asmal M, Walls C, Beuzard Y, Schmidt M, Hacein-Bey-Abina S, Asnafi V, Guichard I, Poirée M, Monpoux F, Touraine P, Brouzes C, de Montalembert M, Payen E, Six E, Ribeil JA, Miccio A, Bartolucci P, Leboulch P, and Cavazzana M
- Subjects
- Adolescent, Female, Humans, Male, Treatment Outcome, Young Adult, Anemia, Sickle Cell therapy, Genetic Therapy adverse effects, Lentivirus genetics, beta-Thalassemia therapy
- Abstract
Sickle cell disease (SCD) and transfusion-dependent β-thalassemia (TDT) are the most prevalent monogenic disorders worldwide. Trial HGB-205 ( NCT02151526 ) aimed at evaluating gene therapy by autologous CD34
+ cells transduced ex vivo with lentiviral vector BB305 that encodes the anti-sickling βA-T87Q -globin expressed in the erythroid lineage. HGB-205 is a phase 1/2, open-label, single-arm, non-randomized interventional study of 2-year duration at a single center, followed by observation in long-term follow-up studies LTF-303 ( NCT02633943 ) and LTF-307 ( NCT04628585 ) for TDT and SCD, respectively. Inclusion and exclusion criteria were similar to those for allogeneic transplantation but restricted to patients lacking geno-identical, histocompatible donors. Four patients with TDT and three patients with SCD, ages 13-21 years, were treated after busulfan myeloablation 4.6-7.9 years ago, with a median follow-up of 4.5 years. Key primary endpoints included mortality, engraftment, replication-competent lentivirus and clonal dominance. No adverse events related to the drug product were observed. Clinical remission and remediation of biological hallmarks of the disease have been sustained in two of the three patients with SCD, and frequency of transfusions was reduced in the third. The patients with TDT are all transfusion free with improvement of dyserythropoiesis and iron overload., (© 2022. The Author(s), under exclusive licence to Springer Nature America, Inc.)- Published
- 2022
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34. Altered Ca 2+ Homeostasis in Red Blood Cells of Polycythemia Vera Patients Following Disturbed Organelle Sorting during Terminal Erythropoiesis.
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Buks R, Dagher T, Rotordam MG, Monedero Alonso D, Cochet S, Gautier EF, Chafey P, Cassinat B, Kiladjian JJ, Becker N, Plo I, Egée S, and El Nemer W
- Subjects
- Animals, Cell Size, Erythroblasts metabolism, Erythroid Cells metabolism, Erythroid Cells pathology, Humans, Intermediate-Conductance Calcium-Activated Potassium Channels metabolism, Intracellular Space metabolism, Janus Kinase 2 genetics, Mice, Inbred C57BL, Mutation genetics, Proteome metabolism, Reticulocytes metabolism, Ribosomes metabolism, Thrombocytosis blood, Mice, Calcium metabolism, Erythrocytes metabolism, Erythropoiesis, Homeostasis, Organelles metabolism, Polycythemia Vera blood, Polycythemia Vera metabolism
- Abstract
Over 95% of Polycythemia Vera (PV) patients carry the V617F mutation in the tyrosine kinase Janus kinase 2 (JAK2), resulting in uncontrolled erythroid proliferation and a high risk of thrombosis. Using mass spectrometry, we analyzed the RBC membrane proteome and showed elevated levels of multiple Ca
2+ binding proteins as well as endoplasmic-reticulum-residing proteins in PV RBC membranes compared with RBC membranes from healthy individuals. In this study, we investigated the impact of JAK2V617F on (1) calcium homeostasis and RBC ion channel activity and (2) protein expression and sorting during terminal erythroid differentiation. Our data from automated patch-clamp show modified calcium homeostasis in PV RBCs and cell lines expressing JAK2V617F , with a functional impact on the activity of the Gárdos channel that could contribute to cellular dehydration. We show that JAK2V617F could play a role in organelle retention during the enucleation step of erythroid differentiation, resulting in modified whole cell proteome in reticulocytes and RBCs in PV patients. Given the central role that calcium plays in the regulation of signaling pathways, our study opens new perspectives to exploring the relationship between JAK2V617F , calcium homeostasis, and cellular abnormalities in myeloproliferative neoplasms, including cellular interactions in the bloodstream in relation to thrombotic events.- Published
- 2021
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35. Fetal hemoglobin rescues ineffective erythropoiesis in sickle cell disease.
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El Hoss S, Cochet S, Godard A, Yan H, Dussiot M, Frati G, Boutonnat-Faucher B, Laurance S, Renaud O, Joseph L, Miccio A, Brousse V, Narla M, and El Nemer W
- Subjects
- Erythroblasts, Erythrocytes, Erythropoiesis, Humans, Anemia, Sickle Cell, Fetal Hemoglobin
- Abstract
While ineffective erythropoiesis has long been recognized as a key contributor to anemia in thalassemia, its role in anemia of sickle cell disease (SCD) has not been critically explored. Using in vitro and in vivo derived human erythroblasts we assessed the extent of ineffective erythropoiesis in SCD. Modeling the bone marrow hypoxic environment, we found that hypoxia induces death of sickle erythroblasts starting at the polychromatic stage, positively selecting cells with high levels of fetal hemoglobin (HbF). Cell death was associated with cytoplasmic sequestration of heat shock protein 70 and was rescued by induction of HbF synthesis. Importantly, we document that in the bone marrow of SCD patients similar cell loss occurs during the final stages of terminal differentiation. Our study provides evidence for ineffective erythropoiesis in SCD and highlights an anti-apoptotic role for HbF during the terminal stages of erythroid differentiation. These findings imply that the beneficial effect on anemia of increased HbF levels is not only due to the increased life span of red cells but also a consequence of decreased ineffective erythropoiesis.
- Published
- 2021
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36. Oxidative stress activates red cell adhesion to laminin in sickle cell disease.
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Lizarralde-Iragorri MA, Lefevre SD, Cochet S, El Hoss S, Brousse V, Filipe A, Dussiot M, Azouzi S, Le Van Kim C, Rodrigues-Lima F, Français O, Le Pioufle B, Klei T, van Bruggen R, and El Nemer W
- Subjects
- Cell Adhesion, Cell Adhesion Molecules metabolism, Erythrocytes metabolism, Humans, Lutheran Blood-Group System metabolism, Oxidative Stress, Anemia, Sickle Cell, Laminin metabolism
- Abstract
Vaso-occlusive crises are the hallmark of sickle cell disease (SCD). They are believed to occur in two steps, starting with adhesion of deformable low-dense red blood cells (RBCs), or other blood cells such as neutrophils, to the wall of post-capillary venules, followed by trapping of the denser RBCs or leukocytes in the areas of adhesion because of reduced effective lumen-diameter. In SCD, RBCs are heterogeneous in terms of density, shape, deformability and surface proteins, which accounts for the differences observed in their adhesion and resistance to shear stress. Sickle RBCs exhibit abnormal adhesion to laminin mediated by Lu/BCAM protein at their surface. This adhesion is triggered by Lu/BCAM phosphorylation in reticulocytes but such phosphorylation does not occur in mature dense RBCs despite firm adhesion to laminin. In this study, we investigated the adhesive properties of sickle RBC subpopulations and addressed the molecular mechanism responsible for the increased adhesion of dense RBCs to laminin in the absence of Lu/BCAM phosphorylation. We provide evidence for the implication of oxidative stress in post-translational modifications of Lu/BCAM that impact its distribution and cis-interaction with glycophorin C at the cell surface activating its adhesive function in sickle dense RBCs.
- Published
- 2021
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37. Characterisation of Asp669Tyr Piezo1 cation channel activity in red blood cells: an unexpected phenotype.
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Pérès L, Monedero Alonso D, Nudel M, Figeac M, Bruge J, Sebda S, Picard V, El Nemer W, Preudhomme C, Rose C, Egée S, and Bouyer G
- Subjects
- Anemia, Hemolytic, Congenital blood, Carbonyl Cyanide m-Chlorophenyl Hydrazone pharmacology, Child, Preschool, Erythrocyte Deformability, Gain of Function Mutation, Humans, Ion Channels genetics, Ion Transport, Male, Membrane Potentials drug effects, Osmolar Concentration, Osmotic Fragility, Patch-Clamp Techniques, Phenotype, Exome Sequencing, Amino Acid Substitution, Anemia, Hemolytic, Congenital genetics, Erythrocytes metabolism, Ion Channels blood, Mutation, Missense, Point Mutation, Potassium blood, Sodium blood
- Published
- 2021
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38. Ineffective erythropoiesis in sickle cell disease: new insights and future implications.
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El Nemer W, Godard A, and El Hoss S
- Subjects
- Anemia, Sickle Cell diagnosis, Anemia, Sickle Cell therapy, Animals, Apoptosis, Cellular Microenvironment, Disease Management, Disease Models, Animal, Disease Susceptibility, Erythrocyte Indices, Erythrocytes metabolism, Fetal Hemoglobin chemistry, Fetal Hemoglobin genetics, Fetal Hemoglobin metabolism, Gene Expression Regulation, Hemoglobins genetics, Humans, Mutation, Protein Multimerization, beta-Globins genetics, Anemia, Sickle Cell blood, Anemia, Sickle Cell etiology, Erythropoiesis genetics
- Abstract
Purpose of Review: Sickle cell disease (SCD) is a hemolytic anemia caused by a point mutation in the β globin gene leading to the expression of an abnormal hemoglobin (HbS) that polymerizes under hypoxic conditions driving red cell sickling. Circulating red cells have been extensively characterized in SCD, as their destruction and removal from peripheral blood are the major contributors to anemia. However, few reports showed cellular abnormalities during erythropoiesis in SCD, suggesting that anemia could also be influenced by defects of central origin., Recent Findings: El Hoss et al. demonstrated ineffective erythropoiesis (IE) in SCD and deciphered the molecular mechanism underlying cell death during the hemoglobin synthesis phase of terminal differentiation. They showed that HbS polymerization induces apoptosis of differentiating erythroblasts and that fetal hemoglobin rescues these cells through its antipolymerization function., Summary: IE is the major cause of anemia in β-thalassemia patients, and it is generally surmised that it contributes little to anemia of SCD. Recent reports demonstrate the occurrence of IE in SCD patients and show important alterations in the hematopoietic and erythroid niches, both in SCD patients and in the humanized Townes SCD mouse model. This implies that therapeutic strategies initially designed to improve red cell survival in the circulation of SCD patients would also positively impact erythropoiesis and bone marrow cellularity., (Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.)
- Published
- 2021
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39. ABCG2 Is Overexpressed on Red Blood Cells in Ph-Negative Myeloproliferative Neoplasms and Potentiates Ruxolitinib-Induced Apoptosis.
- Author
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Buks R, Brusson M, Cochet S, Galochkina T, Cassinat B, Nemazanyy I, Peyrard T, Kiladjian JJ, de Brevern AG, Azouzi S, and El Nemer W
- Subjects
- ATP Binding Cassette Transporter, Subfamily G, Member 2 antagonists & inhibitors, ATP Binding Cassette Transporter, Subfamily G, Member 2 chemistry, Apoptosis drug effects, Binding Sites, Cell Differentiation drug effects, Cell Line, Computer Simulation, Diketopiperazines pharmacology, Erythrocytes drug effects, Erythroid Cells drug effects, Heterocyclic Compounds, 4 or More Rings pharmacology, Humans, Hydroxyurea metabolism, Hydroxyurea pharmacology, Interferon-alpha pharmacology, K562 Cells, Myeloproliferative Disorders blood, Myeloproliferative Disorders drug therapy, Myeloproliferative Disorders pathology, Neoplasm Proteins antagonists & inhibitors, Neoplasm Proteins chemistry, Nitriles, Phosphatidylserines metabolism, Polycythemia Vera blood, Polycythemia Vera pathology, Pyrazoles chemistry, Pyrazoles metabolism, Pyrazoles pharmacokinetics, Pyrimidines, ATP Binding Cassette Transporter, Subfamily G, Member 2 metabolism, Erythrocytes metabolism, Neoplasm Proteins metabolism, Polycythemia Vera drug therapy, Pyrazoles pharmacology
- Abstract
Myeloproliferative neoplasms (MPNs) are a group of disorders characterized by clonal expansion of abnormal hematopoietic stem cells leading to hyperproliferation of one or more myeloid lineages. The main complications in MPNs are high risk of thrombosis and progression to myelofibrosis and leukemia. MPN patients with high risk scores are treated by hydroxyurea (HU), interferon-α, or ruxolitinib, a tyrosine kinase inhibitor. Polycythemia vera (PV) is an MPN characterized by overproduction of red blood cells (RBCs). ABCG2 is a member of the ATP-binding cassette superfamily transporters known to play a crucial role in multidrug resistance development. Proteome analysis showed higher ABCG2 levels in PV RBCs compared to RBCs from healthy controls and an additional increase of these levels in PV patients treated with HU, suggesting that ABCG2 might play a role in multidrug resistance in MPNs. In this work, we explored the role of ABCG2 in the transport of ruxolitinib and HU using human cell lines, RBCs, and in vitro differentiated erythroid progenitors. Using stopped-flow analysis, we showed that HU is not a substrate for ABCG2. Using transfected K562 cells expressing three different levels of recombinant ABCG2, MPN RBCs, and cultured erythroblasts, we showed that ABCG2 potentiates ruxolitinib-induced cytotoxicity that was blocked by the ABCG2-specific inhibitor KO143 suggesting ruxolitinib intracellular import by ABCG2. In silico modeling analysis identified possible ruxolitinib-binding site locations within the cavities of ABCG2. Our study opens new perspectives in ruxolitinib efficacy research targeting cell types depending on ABCG2 expression and polymorphisms among patients.
- Published
- 2021
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40. Lysophosphatidic Acid-Activated Calcium Signaling Is Elevated in Red Cells from Sickle Cell Disease Patients.
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Wang J, Hertz L, Ruppenthal S, El Nemer W, Connes P, Goede JS, Bogdanova A, Birnbaumer L, and Kaestner L
- Subjects
- Animals, Calcium metabolism, Calcium Channels, N-Type metabolism, GTP-Binding Proteins metabolism, HeLa Cells, Humans, MAP Kinase Signaling System, Mice, Models, Biological, Protein Kinase C metabolism, TRPC6 Cation Channel metabolism, Tissue Donors, Anemia, Sickle Cell blood, Calcium Signaling, Erythrocytes metabolism, Lysophospholipids metabolism
- Abstract
(1) Background: It is known that sickle cells contain a higher amount of Ca
2+ compared to healthy red blood cells (RBCs). The increased Ca2+ is associated with the most severe symptom of sickle cell disease (SCD), the vaso-occlusive crisis (VOC). The Ca2+ entry pathway received the name of Psickle but its molecular identity remains only partly resolved. We aimed to map the involved Ca2+ signaling to provide putative pharmacological targets for treatment. (2) Methods: The main technique applied was Ca2+ imaging of RBCs from healthy donors, SCD patients and a number of transgenic mouse models in comparison to wild-type mice. Life-cell Ca2+ imaging was applied to monitor responses to pharmacological targeting of the elements of signaling cascades. Infection as a trigger of VOC was imitated by stimulation of RBCs with lysophosphatidic acid (LPA). These measurements were complemented with biochemical assays. (3) Results: Ca2+ entry into SCD RBCs in response to LPA stimulation exceeded that of healthy donors. LPA receptor 4 levels were increased in SCD RBCs. Their activation was followed by the activation of Gi protein, which in turn triggered opening of TRPC6 and CaV 2.1 channels via a protein kinase Cα and a MAP kinase pathway, respectively. (4) Conclusions: We found a new Ca2+ signaling cascade that is increased in SCD patients and identified new pharmacological targets that might be promising in addressing the most severe symptom of SCD, the VOC.- Published
- 2021
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41. Plasma microparticles of sickle patients during crisis or taking hydroxyurea modify endothelium inflammatory properties.
- Author
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Garnier Y, Ferdinand S, Garnier M, Cita KC, Hierso R, Claes A, Connes P, Hardy-Dessources MD, Lapouméroulie C, Lemonne N, Etienne-Julan M, El Nemer W, and Romana M
- Subjects
- Adolescent, Endothelium, Vascular pathology, Endothelium, Vascular physiopathology, Female, Humans, Inflammation blood, Inflammation drug therapy, Inflammation pathology, Inflammation physiopathology, Male, Anemia, Sickle Cell blood, Anemia, Sickle Cell drug therapy, Anemia, Sickle Cell pathology, Anemia, Sickle Cell physiopathology, Cell-Derived Microparticles metabolism, Endothelium, Vascular metabolism, Hydroxyurea administration & dosage, Intercellular Adhesion Molecule-1 blood, RNA, Messenger blood
- Abstract
Microparticles (MPs) are submicron extracellular vesicles exposing phosphatidylserine (PS), detected at high concentration in the circulation of sickle cell anemia (SS) patients. Several groups studied the biological effects of MPs generated ex vivo. Here, we analyzed for the first time the impact of circulating MPs on endothelial cells (ECs) from 60 sickle cell disease (SCD) patients. MPs were collected from SCD patients and compared with MPs isolated from healthy individuals (AA). Other plasma MPs were purified from SS patients before and 2 years after the onset of hydroxyurea (HU) treatment or during a vaso-occlusive crisis and at steady-state. Compared with AA MPs, SS MPs increased EC ICAM-1 messenger RNA and protein levels, as well as neutrophil adhesion. We showed that ICAM-1 overexpression was primarily caused by MPs derived from erythrocytes, rather than from platelets, and that it was abolished by MP PS capping using annexin V. MPs from SS patients treated with HU were less efficient to induce a proinflammatory phenotype in ECs compared with MPs collected before therapy. In contrast, MPs released during crisis increased ICAM-1 and neutrophil adhesion levels, in a PS-dependent manner, compared with MPs collected at steady-state. Furthermore, neutrophil adhesion was abolished by a blocking anti-ICAM-1 antibody. Our study provides evidence that MPs play a key role in SCD pathophysiology by triggering a proinflammatory phenotype of ECs. We also uncover a new mode of action for HU and identify potential therapeutics: annexin V and anti-ICAM-1 antibodies., (© 2020 by The American Society of Hematology.)
- Published
- 2020
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42. Characterization of red blood cell microcirculatory parameters using a bioimpedance microfluidic device.
- Author
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Xu T, Lizarralde-Iragorri MA, Roman J, Ghasemi R, Lefèvre JP, Martincic E, Brousse V, Français O, El Nemer W, and Le Pioufle B
- Subjects
- Anemia, Sickle Cell blood, Electric Impedance, Humans, Erythrocytes cytology, Lab-On-A-Chip Devices, Microcirculation
- Abstract
This paper describes the use of a microfluidic device comprising channels with dimensions mimicking those of the smallest capillaries found in the human microcirculation. The device structure, associated with a pair of microelectrodes, provides a tool to electrically measure the transit time of red blood cells through fine capillaries and thus generate an electrical signature for red blood cells in the context of human erythroid genetic disorders, such as sickle cell disease or hereditary spherocytosis, in which red cell elasticity is altered. Red blood cells from healthy individuals, heated or not, and red blood cells from patients with sickle cell disease or hereditary spherocytosis where characterized at a single cell level using our device. Transit time and blockade amplitude recordings were correlated with microscopic observations, and analyzed. The link between the electrical signature and the mechanical properties of the red blood cells is discussed in the paper, with greater transit time and modified blockade amplitude for heated and pathological red blood cells as compared to those from healthy individuals. Our single cell-based methodology offers a new and complementary approach to characterize red cell mechanical properties in human disorders under flow conditions mimicking the microcirculation.
- Published
- 2020
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43. Editing a γ-globin repressor binding site restores fetal hemoglobin synthesis and corrects the sickle cell disease phenotype.
- Author
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Weber L, Frati G, Felix T, Hardouin G, Casini A, Wollenschlaeger C, Meneghini V, Masson C, De Cian A, Chalumeau A, Mavilio F, Amendola M, Andre-Schmutz I, Cereseto A, El Nemer W, Concordet JP, Giovannangeli C, Cavazzana M, and Miccio A
- Subjects
- Binding Sites, CRISPR-Cas Systems, Fetal Hemoglobin genetics, Fetal Hemoglobin metabolism, Gene Editing methods, Humans, Phenotype, beta-Globins genetics, beta-Globins metabolism, gamma-Globins genetics, gamma-Globins metabolism, Anemia, Sickle Cell genetics, Anemia, Sickle Cell therapy, beta-Thalassemia genetics, beta-Thalassemia metabolism, beta-Thalassemia therapy
- Abstract
Sickle cell disease (SCD) is caused by a single amino acid change in the adult hemoglobin (Hb) β chain that causes Hb polymerization and red blood cell (RBC) sickling. The co-inheritance of mutations causing fetal γ-globin production in adult life hereditary persistence of fetal Hb (HPFH) reduces the clinical severity of SCD. HPFH mutations in the HBG γ-globin promoters disrupt binding sites for the repressors BCL11A and LRF. We used CRISPR-Cas9 to mimic HPFH mutations in the HBG promoters by generating insertions and deletions, leading to disruption of known and putative repressor binding sites. Editing of the LRF-binding site in patient-derived hematopoietic stem/progenitor cells (HSPCs) resulted in γ-globin derepression and correction of the sickling phenotype. Xenotransplantation of HSPCs treated with gRNAs targeting the LRF-binding site showed a high editing efficiency in repopulating HSPCs. This study identifies the LRF-binding site as a potent target for genome-editing treatment of SCD., (Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).)
- Published
- 2020
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44. Dimerization and phosphorylation of Lutheran/basal cell adhesion molecule are critical for its function in cell migration on laminin.
- Author
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Guadall A, Cochet S, Renaud O, Colin Y, Le Van Kim C, de Brevern AG, and El Nemer W
- Subjects
- Amino Acid Sequence, Animals, Caco-2 Cells, Dogs, Humans, Madin Darby Canine Kidney Cells, Models, Molecular, Phosphorylation drug effects, Protein Domains, Protein Structure, Quaternary, Cell Adhesion Molecules chemistry, Cell Adhesion Molecules metabolism, Cell Movement drug effects, Laminin pharmacology, Lutheran Blood-Group System chemistry, Lutheran Blood-Group System metabolism, Protein Multimerization drug effects
- Abstract
Tumor cell migration depends on the interactions of adhesion proteins with the extracellular matrix. Lutheran/basal cell adhesion molecule (Lu/BCAM) promotes tumor cell migration by binding to laminin α5 chain, a subunit of laminins 511 and 521. Lu/BCAM is a type I transmembrane protein with a cytoplasmic domain of 59 (Lu) or 19 (Lu(v13)) amino acids. Here, using an array of techniques, including site-directed mutagenesis, immunoblotting, FRET, and proximity-ligation assays, we show that both Lu and Lu(v13) form homodimers at the cell surface of epithelial cancer cells. We mapped two small- XXX -small motifs in the transmembrane domain as potential sites for monomers docking and identified three cysteines in the cytoplasmic domain as being critical for covalently stabilizing dimers. We further found that Lu dimerization and phosphorylation of its cytoplasmic domain were concomitantly needed to promote cell migration. We conclude that Lu is the critical isoform supporting tumor cell migration on laminin 521 and that the Lu:Lu(v13) ratio at the cell surface may control the balance between cellular firm adhesion and migration., (© 2019 Guadall et al.)
- Published
- 2019
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45. Reticulocyte and red blood cell deformation triggers specific phosphorylation events.
- Author
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Moura PL, Lizarralde Iragorri MA, Français O, Le Pioufle B, Dobbe JGG, Streekstra GJ, El Nemer W, Toye AM, and Satchwell TJ
- Subjects
- Cell Shape, Cells, Cultured, Erythrocyte Membrane chemistry, Erythrocyte Membrane metabolism, Erythrocytes cytology, Glycogen Synthase Kinase 3 metabolism, Humans, Protein Processing, Post-Translational physiology, Proteomics, Reticulocytes cytology, Reticulocytes physiology, src-Family Kinases metabolism, Erythrocyte Deformability physiology, Erythrocytes physiology, Membrane Proteins metabolism, Phosphorylation physiology
- Abstract
The capacity to undergo substantial deformation is a defining characteristic of the red blood cell (RBC), facilitating transit through the splenic interendothelial slits and microvasculature. Establishment of this remarkable property occurs during a process of reticulocyte maturation that begins with egress through micron-wide pores in the bone marrow and is completed within the circulation. The requirement to undertake repeated cycles of deformation necessitates that both reticulocytes and erythrocytes regulate membrane-cytoskeletal protein interactions in order to maintain cellular stability. In the absence of transcriptional activity, modulation of these interactions in RBCs is likely to be achieved primarily through specific protein posttranslational modifications, which at present remain undefined. In this study, we use high-throughput methods to define the processes that underlie the response to deformation and shear stress in both reticulocytes and erythrocytes. Through combination of a bead-based microsphiltration assay with phosphoproteomics we describe posttranslational modification of RBC proteins associated with deformation. Using microsphiltration and microfluidic biochip-based assays, we explore the effect of inhibiting kinases identified using this dataset. We demonstrate roles for GSK3 and Lyn in capillary transit and maintenance of membrane stability following deformation and show that combined inhibition of these kinases significantly decreases reticulocyte capacity to undergo repeated deformation. Finally, we derive a comprehensive and integrative phosphoproteomic dataset that provides a valuable resource for further mechanistic dissection of the molecular pathways that underlie the RBC's response to mechanical stimuli and for the study of reticulocyte maturation., (© 2019 by The American Society of Hematology.)
- Published
- 2019
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46. Insights into determinants of spleen injury in sickle cell anemia.
- Author
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El Hoss S, Cochet S, Marin M, Lapouméroulie C, Dussiot M, Bouazza N, Elie C, de Montalembert M, Arnaud C, Guitton C, Pellegrino B, Odièvre MH, Moati F, Le Van Kim C, Aronovicz YC, El Nemer W, and Brousse V
- Subjects
- Biomarkers, Erythrocyte Deformability drug effects, Erythrocyte Inclusions pathology, Female, Humans, Immunophenotyping, Incidence, Male, Phosphorylation, Radionuclide Imaging methods, Splenic Diseases epidemiology, Anemia, Sickle Cell complications, Disease Susceptibility, Splenic Diseases diagnosis, Splenic Diseases etiology
- Abstract
Spleen dysfunction is central to morbidity and mortality in children with sickle cell anemia (SCA). The initiation and determinants of spleen injury, including acute splenic sequestration (ASS) have not been established. We investigated splenic function longitudinally in a cohort of 57 infants with SCA enrolled at 3 to 6 months of age and followed up to 24 months of age and explored the respective contribution of decreased red blood cell (RBC) deformability and increased RBC adhesion on splenic injury, including ASS. Spleen function was evaluated by sequential
99m Tc heated RBC spleen scintigraphy and high-throughput quantification of RBCs with Howell-Jolly bodies (HJBs). At 6 and 18 months of age, spleen filtration function was decreased in 32% and 50% of infants, respectively, whereas the median %HJB-RBCs rose significantly (from 0.3% to 0.74%). An excellent correlation was established between %HJB-RBCs and spleen scintigraphy results. RBC adhesion to laminin and endothelial cells increased with time. Adhesion to endothelial cells negatively correlated with splenic function. Irreversibly sickled cells (ISCs), used as a surrogate marker of impaired deformability, were detected at enrollment and increased significantly at 18 months. %ISCs correlated positively with %HJB-RBCs and negatively with splenic uptake, indicating a relationship between their presence in the circulation and spleen dysfunction. In the subgroup of 8 infants who subsequently experienced ASS, %ISCs at enrollment were significantly higher compared with the asymptomatic group, suggesting a major role of impaired deformability in ASS. Higher levels of %HJB-RBCs were observed after the occurrence of ASS, demonstrating its negative impact on splenic function., (© 2019 by The American Society of Hematology.)- Published
- 2019
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47. Resolution of sickle cell disease-associated inflammation and tissue damage with 17 R -resolvin D1.
- Author
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Matte A, Recchiuti A, Federti E, Koehl B, Mintz T, El Nemer W, Tharaux PL, Brousse V, Andolfo I, Lamolinara A, Weinberg O, Siciliano A, Norris PC, Riley IR, Iolascon A, Serhan CN, Brugnara C, and De Franceschi L
- Subjects
- Animals, Cytokines metabolism, Humans, Kidney Diseases etiology, Kidney Diseases pathology, Mice, Neutrophils immunology, Neutrophils metabolism, Neutrophils pathology, Pneumonia etiology, Pneumonia pathology, Anemia, Sickle Cell complications, Anti-Inflammatory Agents, Non-Steroidal administration & dosage, Docosahexaenoic Acids administration & dosage, Kidney Diseases prevention & control, Pneumonia prevention & control
- Abstract
Resolvins (Rvs), endogenous lipid mediators, play a key role in the resolution of inflammation. Sickle cell disease (SCD), a genetic disorder of hemoglobin, is characterized by inflammatory and vaso-occlusive pathologies. We document altered proresolving events following hypoxia/reperfusion in humanized SCD mice. We demonstrate novel protective actions of 17 R -resolvin D1 (17 R- RvD1; 7 S , 8 R , 17 R -trihydroxy-4 Z , 9 E , 11 E , 13 Z , 15 E , 19 Z -docosahexaenoic acid) in reducing ex vivo human SCD blood leukocyte recruitment by microvascular endothelial cells and in vivo neutrophil adhesion and transmigration. In SCD mice exposed to hypoxia/reoxygenation, oral administration of 17 R - RvD1 reduces systemic/local inflammation and vascular dysfunction in lung and kidney. The mechanism of action of 17 R -RvD1 involves (1) enhancement of SCD erythrocytes and polymorphonuclear leukocyte efferocytosis, (2) blunting of NF-κB activation, and (3) a reduction in inflammatory cytokines, vascular activation markers, and E-selectin expression. Thus, 17 R -RvD1 might represent a new therapeutic strategy for the inflammatory vasculopathy of SCD., (© 2019 by The American Society of Hematology.)
- Published
- 2019
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48. Prognostic factors of disease severity in infants with sickle cell anemia: A comprehensive longitudinal cohort study.
- Author
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Brousse V, El Hoss S, Bouazza N, Arnaud C, Bernaudin F, Pellegrino B, Guitton C, Odièvre-Montanié MH, Mames D, Brouzes C, Picard V, Nguyen-Khoa T, Pereira C, Lapouméroulie C, Pissard S, Gardner K, Menzel S, Le Van Kim C, Colin-Aronovicz Y, Buffet P, Mohandas N, Elie C, Maier-Redelsperger M, El Nemer W, and de Montalembert M
- Subjects
- Anemia, Sickle Cell complications, Anemia, Sickle Cell therapy, Biomarkers analysis, Blood Transfusion, Cohort Studies, Female, Fetal Hemoglobin analysis, Hemoglobins analysis, Hospitalization, Humans, Infant, Longitudinal Studies, Male, Prognosis, Anemia, Sickle Cell diagnosis, Severity of Illness Index
- Abstract
In order to identify very early prognostic factors that can provide insights into subsequent clinical complications, we performed a comprehensive longitudinal multi-center cohort study on 57 infants with sickle cell anemia (55 SS; 2 Sβ°) during the first 2 years of life (ClinicalTrials.gov: NCT01207037). Time to first occurrence of a severe clinical event-acute splenic sequestration (ASS), vaso-occlusive (VOC) event requiring hospitalization, transfusion requirement, conditional/ abnormal cerebral velocities, or death-was used as a composite endpoint. Infants were recruited at a mean age of 4.4 ±1 months. Median follow-up was 19.4 months. During the study period, 38.6% of infants experienced ≥1 severe event: 14% ASS, 22.8% ≥ 1 VOC (median age: 13.4 and 12.8 months, respectively) and 33.3% required transfusion. Of note, 77% of the cohort was hospitalized, with febrile illness being the leading cause for admission. Univariate analysis of various biomarkers measured at enrollment showed that fetal hemoglobin (HbF) was the strongest prognostic factor of subsequent severe outcome. Other biomarkers measured at enrolment including absolute neutrophil or reticulocyte counts, expression of erythroid adhesion markers, % of dense red cells, cellular deformability or ϒ-globin genetic variants, failed to be associated with severe clinical outcome. Multivariate analysis demonstrated that higher Hb concentration and HbF level are two independent protective factors (adjusted HRs (95% CI) 0.27 (0.11-0.73) and 0.16 (0.06-0.43), respectively). These findings imply that early measurement of HbF and Hb levels can identify infants at high risk for subsequent severe complications, who might maximally benefit from early disease modifying treatments., (© 2018 Wiley Periodicals, Inc.)
- Published
- 2018
- Full Text
- View/download PDF
49. Absolute proteome quantification of highly purified populations of circulating reticulocytes and mature erythrocytes.
- Author
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Gautier EF, Leduc M, Cochet S, Bailly K, Lacombe C, Mohandas N, Guillonneau F, El Nemer W, and Mayeux P
- Subjects
- Humans, Erythrocytes metabolism, Proteome metabolism, Reticulocytes metabolism
- Abstract
Reticulocytes produced in the bone marrow undergo maturation in the bloodstream to give rise to erythrocytes. Although the proteome of circulating red cells has been the subject of several reports, the cellular populations used for these studies were never completely devoid of reticulocytes. In our current study, we used highly purified erythrocyte and reticulocyte populations to quantify the absolute expression levels of the proteins in each cell population. Erythrocytes and reticulocytes were purified in a multistep process involving cellulose chromatography, Percoll gradient centrifugation, and fluorescence cell sorting after thiazole orange labeling. Proteins were analyzed by mass spectrometry from whole cells and erythrocyte plasma membrane (ghosts), leading to the identification and quantification of 2077 proteins, including 654 that were reticulocyte-specific. Absolute quantifications of these proteins were made using the mean corpuscular hemoglobin content of the cells as a standard. For each protein, we calculated the percentage loss during the terminal stages of reticulocyte maturation and the percentage of association with the plasma membrane. In addition, we used modified adenosine triphosphate and adenosine diphosphate molecules that enable the transfer of a biotin molecule to the catalytic sites of kinases to isolate active kinases in the erythrocytes and determined the absolute expression of 75 protein kinases and the modification of their expression during reticulocyte maturation. Our findings represent the first absolute quantification of proteins that are specifically expressed in normal erythrocytes with no detectable contamination by reticulocytes. Our findings thus represent a reference database for the future proteomic analysis of pathological erythrocytes., (© 2018 by The American Society of Hematology.)
- Published
- 2018
- Full Text
- View/download PDF
50. A novel non-invasive method to measure splenic filtration function in humans.
- Author
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El Hoss S, Dussiot M, Renaud O, Brousse V, and El Nemer W
- Subjects
- Anemia, Sickle Cell pathology, Erythrocyte Inclusions pathology, Erythrocytes, Abnormal pathology, Female, Humans, Male, Spleen pathology, Anemia, Sickle Cell metabolism, Anemia, Sickle Cell physiopathology, Erythrocyte Inclusions metabolism, Erythrocytes, Abnormal metabolism, Spleen metabolism
- Published
- 2018
- Full Text
- View/download PDF
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