Your browser doesn't support javascript.
loading
O-Linked N-Acetylglucosamine Transferase Ensures Survival of Mouse Fetal Liver Hematopoietic Progenitors Partly by Regulating Bcl-xL and Oxidative Phosphorylation.
Soma, Shunsuke; Murakami, Koichi; Fukuchi, Yumi; Kunimoto, Hiroyoshi; Nakajima, Hideaki.
Afiliación
  • Soma S; Division of Hematology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan.
  • Murakami K; Division of Hematology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan.
  • Fukuchi Y; Department of Stem Cell and Immune Regulation, Yokohama City University Graduate School of Medicine, Yokohama, Japan.
  • Kunimoto H; Department of Pathophysiology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, Tokyo, Japan.
  • Nakajima H; Department of Stem Cell and Immune Regulation, Yokohama City University Graduate School of Medicine, Yokohama, Japan.
Stem Cells ; 42(1): 55-63, 2024 Jan 13.
Article en En | MEDLINE | ID: mdl-37813816
ABSTRACT
O-linked N-acetylglucosamine transferase (OGT) critically regulates wide variety of biological processes such as gene expression, metabolism, stress response, signaling and proteostasis. In adult hematopoiesis, OGT is crucial for differentiation of B and T cells and the maintenance of hematopoietic stem cells (HSCs). However, a role for OGT in fetal liver (FL) hematopoiesis remains unknown. To investigate a role for OGT in FL hematopoiesis, we conditionally disrupted OGT in hematopoietic cells in developing FLs. Hematopoietic specific disruption of OGT resulted in embryonic lethality in late stage of gestation due to severe anemia and growth retardation. OGT loss led to profound reduction of differentiating erythroid cells and erythroid progenitors in FLs due to massive apoptosis. In addition, clonogenic capacity of FL cells was severely impaired by OGT loss. Interestingly, expression of BCL-XL, a well-known inhibitor of apoptosis in FL cells, dramatically decreased, and the levels of reactive oxygen species (ROS) were increased in OGT-deficient FL cells. Overexpression of Bcl-xL and reduction of ROS significantly restored the colony formation of OGT-deficient FL cells. This study revealed a novel role for OGT during embryogenesis, which ensures survival of FL hematopoietic cells partly by regulating Bcl-xL and oxidative phosphorylation.
Asunto(s)
Palabras clave

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Fosforilación Oxidativa / N-Acetilglucosaminiltransferasas Límite: Animals Idioma: En Revista: Stem Cells Año: 2024 Tipo del documento: Article País de afiliación: Japón

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Fosforilación Oxidativa / N-Acetilglucosaminiltransferasas Límite: Animals Idioma: En Revista: Stem Cells Año: 2024 Tipo del documento: Article País de afiliación: Japón