Microtubules regulate focal adhesion dynamics through MAP4K4.
Microtubules regulate focal adhesion dynamics through MAP4K4.
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DOI:
10.1016/j.devcel.2014.10.025
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发表时间:
2014-12-08
影响因子:
11.8
通讯作者:
Wu, Xiaoyang
中科院分区:
文献类型:
--
作者:
Yue, Jiping;Xie, Min;Gou, Xuewen;Lee, Philbert;Schneider, Michael D.;Wu, Xiaoyang
Disassembly of focal adhesions (FAs) allows cell retraction and integrin detachment from the ECM, processes critical for cell movement. Growth of MT (microtubule) can promote FA turnover by serving as tracks to deliver proteins essential for FA disassembly. The molecular nature of this FA “disassembly factor”, however, remains elusive. By quantitative proteomics, we identified MAP4K4 (mitogen-activated protein kinase kinase kinase kinase 4) as a FA regulator that associates with MTs. Conditional knockout (cKO) of MAP4K4 in skin stabilizes FAs and impairs epidermal migration. By exploring underlying mechanisms, we further show that MAP4K4 associates with EB2, a MT binding protein, and IQSEC1, a guanine nucleotide exchange factor (GEF) specific for Arf6, whose activation promotes integrin internalization. Together, our findings provide critical insights into FA disassembly, suggesting that MTs can deliver MAP4K4 toward FAs through EB2, where MAP4K4 can in turn activate Arf6 via IQSEC1 and enhance FA dissolution.
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影响因子:
9.2
作者:
Bershadsky, A;Chausovsky, A;Geiger, B
通讯作者:
Geiger, B
影响因子:
9.2
作者:
Dunphy, JL;Moravec, R;Casanova, JE
通讯作者:
Casanova, JE
影响因子:
4.8
作者:
Ong, SE;Foster, LJ;Mann, M
通讯作者:
Mann, M
影响因子:
4.8
作者:
Moravec, Radim;Conger, Kathryn K.;Casanova, James E.
通讯作者:
Casanova, James E.
DOI:
10.1083/jcb.200904054
发表时间:
2009-11-30
期刊:
The Journal of cell biology
影响因子:
--
作者:
Ezratty EJ;Bertaux C;Marcantonio EE;Gundersen GG
通讯作者:
Gundersen GG