Abstract:
:Embryonic hematopoiesis is a complex process. Elucidating the mechanism regulating hematopoietic differentiation from pluripotent stem cells would allow us to establish a strategy to efficiently generate hematopoietic cells. However, the mechanism governing the generation of hematopoietic progenitors from human embryonic stem cells (hESCs) remains unknown. Here, on the basis of the emergence of CD43(+) hematopoietic cells from hemogenic endothelial (HE) cells, we demonstrated that VEGF was essential and sufficient, and that bFGF was synergistic with VEGF to specify the HE cells and the subsequent transition into CD43(+) hematopoietic cells. Significantly, we identified TGFβ as a novel signal to regulate hematopoietic development, as the TGFβ inhibitor SB 431542 significantly promoted the transition from HE cells into CD43(+) hematopoietic progenitor cells (HPCs) during hESC differentiation. By defining these critical signaling factors during hematopoietic differentiation, we can efficiently generate HPCs from hESCs. Our strategy could offer an in vitro model to study early human hematopoietic development.
journal_name
Cell Resjournal_title
Cell researchauthors
Wang C,Tang X,Sun X,Miao Z,Lv Y,Yang Y,Zhang H,Zhang P,Liu Y,Du L,Gao Y,Yin M,Ding M,Deng Hdoi
10.1038/cr.2011.138subject
Has Abstractpub_date
2012-01-01 00:00:00pages
194-207issue
1eissn
1001-0602issn
1748-7838pii
cr2011138journal_volume
22pub_type
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