0000000000969467

AUTHOR

Patrick Gonin

showing 2 related works from this author

The severe phenotype of Diamond-Blackfan anemia is modulated by heat shock protein 70.

2017

International audience; Diamond-Blackfan anemia (DBA) is a rare congenital bone marrow failure syndrome that exhibits an erythroid-specific phenotype. In at least 70% of cases, DBA is related to a haploinsufficient germ line mutation in a ribosomal protein (RP) gene. Additional cases have been associated with mutations in GATA1. We have previously established that the RPL11+/Mut phenotype is more severe than RPS19+/Mut phenotype because of delayed erythroid differentiation and increased apoptosis of RPL11+/Mut erythroid progenitors. The HSP70 protein is known to protect GATA1, the major erythroid transcription factor, from caspase-3 mediated cleavage during normal erythroid differentiation.…

0301 basic medicinecongenital hereditary and neonatal diseases and abnormalitiesIdentificationApoptosis-Inducing FactorGata1 MutationsInhibits ApoptosisBiologyHsp7003 medical and health sciencesGermline mutationRed Cells Iron and Erythropoiesishemic and lymphatic diseasesmedicine[ SDV.MHEP.HEM ] Life Sciences [q-bio]/Human health and pathology/HematologyNuclear ImportErythropoiesisDiamond–Blackfan anemiaHuman ErythroblastsBone marrow failure[SDV.MHEP.HEM]Life Sciences [q-bio]/Human health and pathology/HematologyGATA1Hematologymedicine.diseasePhenotypeMolecular biology3. Good healthHsp70030104 developmental biologyRibosomal-ProteinsProtein Gene DeletionsErythropoiesisHaploinsufficiencyBlood advances
researchProduct

XPO1 regulates erythroid differentiation and is a new target for the treatment of β-thalassemia

2019

β-thalassemia major (β-TM) is an inherited hemoglobinopathy caused by a quantitative defect in the synthesis of β-globin chains of hemoglobin, leading to the accumulation of free a-globin chains that aggregate and cause ineffective erythropoiesis. We have previously demonstrated that terminal erythroid maturation requires a transient activation of caspase-3 and that the chaperone Heat Shock Protein 70 (HSP70) accumulates in the nucleus to protect GATA-1 transcription factor from caspase-3 cleavage. This nuclear accumulation of HSP70 is inhibited in human β-TM erythroblasts due to HSP70 sequestration in the cytoplasm by free a-globin chains, resulting in maturation arrest and apoptosis. Like…

[SDV.MHEP] Life Sciences [q-bio]/Human health and pathologyhemic and lymphatic diseasesArticleComputingMilieux_MISCELLANEOUS[SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
researchProduct