Notch signaling specifies megakaryocyte development from hematopoietic stem cells.
Notch signaling specifies megakaryocyte development from hematopoietic stem cells.
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DOI:
10.1016/j.stem.2008.07.010
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发表时间:
2008-09-11
期刊:
影响因子:
23.9
通讯作者:
Gilliland DG
中科院分区:
文献类型:
--
作者:
Mercher T;Cornejo MG;Sears C;Kindler T;Moore SA;Maillard I;Pear WS;Aster JC;Gilliland DG
In the hematopoietic system, Notch signaling specifies T cell lineage fate, in part through negative regulation of B cell and myeloid lineage development. However, we unexpectedly observed the development of megakaryocytes when using heterotypic cocultures of hematopoietic stem cells with OP9 cells expressing Delta-like1, but not with parental OP9 cells. This effect was abrogated by inhibition of Notch signaling either with γ-secretase inhibitors or by expression of the dominant-negative Master-mind-like1. The importance of Notch signaling for megakaryopoietic development in vivo was confirmed by using mutant alleles that either activate or inhibit Notch signaling. These findings indicate that Notch is a positive regulator of megakaryopoiesis and plays a more complex role in cell-fate decisions among myeloid progenitors than previously appreciated.
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DOI:
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发表时间:
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期刊:
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