Chemical genetics identifies c-Src as an activator of primitive ectoderm formation in murine embryonic stem cells.
Chemical genetics identifies c-Src as an activator of primitive ectoderm formation in murine embryonic stem cells.
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DOI:
10.1126/scisignal.2000311
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发表时间:
2009-10-13
影响因子:
7.3
通讯作者:
Smithgall TE
中科院分区:
文献类型:
--
作者:
Meyn MA 3rd;Smithgall TE
Multiple Src family kinases (SFKs) are present in murine embryonic stem (mES) cells. Whereas complete inhibition of all SFK activity blocks mES cell differentiation, inhibition of only c-Yes induces differentiation. Thus, individual SFKs may have opposing roles in the regulation of mES cell fate. To test this possibility, we generated SFK mutants with engineered resistance to a nonselective SFK inhibitor. The presence of an inhibitor-resistant c-Src mutant, but not analogous mutants of Hck, Lck, c-Yes, or Fyn, reversed the differentiation block associated with inhibitor treatment, resulting in the formation of cells with properties of primitive ectoderm. These results show that distinct SFK signaling pathways regulate mES cell fate and demonstrate that the formation of primitive ectoderm is regulated by the activity of c-Src.
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