Coupling S100A4 to Rhotekin alters Rho signaling output in breast cancer cells.
Coupling S100A4 to Rhotekin alters Rho signaling output in breast cancer cells.
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DOI:
10.1038/onc.2012.383
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发表时间:
2013-08-08
期刊:
影响因子:
8
通讯作者:
O'Connor, K. L.
中科院分区:
文献类型:
--
作者:
Chen, M.;Bresnick, A. R.;O'Connor, K. L.
Rho signaling is increasingly recognized to contribute to invasion and metastasis. In this study, we discovered that metastasis-associated protein S100A4 interacts with the Rho binding domain (RBD) of Rhotekin, thus connecting S100A4 to the Rho pathway. GST pull-down and immunoprecipitation assays demonstrated that S100A4 specifically and directly binds to Rhotekin RBD, but not other Rho effector RBDs. S100A4 binding to Rhotekin is calcium-dependent and uses residues distinct from those bound by active Rho. Interestingly, we found that S100A4 and Rhotekin can form a complex with active RhoA. Using RNAi, we determined that suppression of both S100A4 and Rhotekin leads to loss of Rho-dependent membrane ruffling in response to EGF, an increase in contractile F-actin “stress” fibers, and blocked invasive growth in three-dimensional culture. Accordingly, our data suggest that interaction of S100A4 and Rhotekin permits S100A4 to complex with RhoA and switch Rho function from stress fiber formation to membrane ruffling to confer an invasive phenotype.
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影响因子:
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影响因子:
3.3
作者:
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通讯作者:
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影响因子:
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作者:
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DOI:
10.1083/jcb.148.2.253
发表时间:
2000-01-24
期刊:
The Journal of cell biology
影响因子:
--
作者:
O'Connor KL;Nguyen BK;Mercurio AM
通讯作者:
Mercurio AM