MODULATION OF TGF-BETA SIGNALING BY ENDOGLIN IN MURINE HEMANGIOBLAST DEVELOPMENT AND PRIMITIVE HEMATOPOIESIS Running title: TGF-beta signaling in early blood development
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Znf45l affects primitive hematopoiesis by regulating transforming growth factor-β signaling
Znf45l, containing classical C2H2 domains, is a novel member of Zinc finger proteins in zebrafish. In vertebrates, TGF-β signaling plays a critical role in hematopoiesis. Here, we showed that Znf45l is expressed both maternally and zygotically throughout early development. Znf45l-depleted Zebrafish embryos display shorter tails and necrosis with reduced expression of hematopoietic maker genes. ...
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Primitive hematopoiesis occurs in the yolk sac blood islands during vertebrate embryogenesis, where abundant phosphatidylcholines (PC) are available as important nutrients for the developing embryo. However, whether these phospholipids also generate developmental cues to promote hematopoiesis is largely unknown. Here, we show that lysophosphatidic acid (LPA), a signaling molecule derived from P...
متن کاملA murine model of hereditary hemorrhagic telangiectasia.
Endoglin (CD105), an accessory protein of the TGF-beta receptor superfamily, is highly expressed on endothelial cells. Hereditary hemorrhagic telangiectasia type 1 (HHT1) is associated with mutations in the Endoglin gene, leading to haploinsufficiency. To generate a disease model and ascertain the role of endoglin in development, we generated mice lacking 1 or both copies of the gene. Endoglin ...
متن کاملInhibition of Tgf beta signaling by endogenous retinoic acid is essential for primary lung bud induction.
Disruption of retinoic acid (RA) signaling during early development results in severe respiratory tract abnormalities, including lung agenesis. Previous studies suggest that this might result from failure to selectively induce fibroblast growth factor 10 (Fgf10) in the prospective lung region of the foregut. Little is known about the RA-dependent pathways present in the foregut that may be cruc...
متن کاملEndoglin potentiates nitric oxide synthesis to enhance definitive hematopoiesis
During embryonic development, hematopoietic cells develop by a process of endothelial-to hematopoietic transition of a specialized population of endothelial cells. These hemogenic endothelium (HE) cells in turn develop from a primitive population of FLK1(+) mesodermal cells. Endoglin (ENG) is an accessory TGF-β receptor that is enriched on the surface of endothelial and hematopoietic stem cells...
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تاریخ انتشار 2011