Smad2 transduces common signals from receptor serine-threonine and tyrosine kinases

被引:251
作者
de Caestecker, MP
Parks, WT
Frank, CJ
Castagnino, P
Bottaro, DP
Roberts, AB
Lechleider, RJ [1 ]
机构
[1] NCI, Lab Cell Regulat & Carcinogenesis, Bethesda, MD 20892 USA
[2] NCI, Cellular & Mol Biol Lab, Bethesda, MD 20892 USA
关键词
SMAD; TGF-beta; signal transduction; protein phosphorylation; HGF; receptor kinases;
D O I
10.1101/gad.12.11.1587
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
SMAD proteins mediate signals from receptor serine-threonine kinases (RSKs) of the TGP-beta superfamily. We demonstrate here that HGF and EGF, which signal through RTKs, can also mediate SMAD-dependent reporter gene activation and induce rapid phosphorylation of endogenous SMAD proteins by kinase(s) downstream of MEK1. HGF induces phosphorylation and nuclear translocation of epitope-tagged Smad2 and a mutation that blocks TGF-beta signaling also blocks HGF signal transduction. Smad2 may thus act as a common positive effector of TGE-beta- and HGF-induced signals and serve to modulate cross talk between RTK and RSK signaling pathways.
引用
收藏
页码:1587 / 1592
页数:6
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