Cortactin phosphorylation regulates cell invasion through a pH-dependent pathway.
Cortactin phosphorylation regulates cell invasion through a pH-dependent pathway.
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DOI:
10.1083/jcb.201103045
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发表时间:
2011-11-28
期刊:
影响因子:
--
通讯作者:
Condeelis J
中科院分区:
文献类型:
--
作者:
Magalhaes MA;Larson DR;Mader CC;Bravo-Cordero JJ;Gil-Henn H;Oser M;Chen X;Koleske AJ;Condeelis J
Cortactin phosphorylation induces recruitment of the sodium-hydrogen exchanger NHE1 to invadopodia, resulting in pH changes that regulate cortactin-cofilin binding and invadopodium dynamics. Invadopodia are invasive protrusions with proteolytic activity uniquely found in tumor cells. Cortactin phosphorylation is a key step during invadopodia maturation, regulating Nck1 binding and cofilin activity. The precise mechanism of cortactin-dependent cofilin regulation and the roles of this pathway in invadopodia maturation and cell invasion are not fully understood. We provide evidence that cortactin–cofilin binding is regulated by local pH changes at invadopodia that are mediated by the sodium–hydrogen exchanger NHE1. Furthermore, cortactin tyrosine phosphorylation mediates the recruitment of NHE1 to the invadopodium compartment, where it locally increases the pH to cause the release of cofilin from cortactin. We show that this mechanism involving cortactin phosphorylation, local pH increase, and cofilin activation regulates the dynamic cycles of invadopodium protrusion and retraction and is essential for cell invasion in 3D. Together, these findings identify a novel pH-dependent regulation of cell invasion.
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影响因子:
6.6
作者:
Blouw, Barbara;Seals, Darren F.;Courtneidge, Sara A.
通讯作者:
Courtneidge, Sara A.
DOI:
10.1083/jcb.136.6.1307
发表时间:
1997-03-24
期刊:
The Journal of cell biology
影响因子:
--
作者:
Carlier MF;Laurent V;Santolini J;Melki R;Didry D;Xia GX;Hong Y;Chua NH;Pantaloni D
通讯作者:
Pantaloni D
DOI:
10.1083/jcb.150.1.213
发表时间:
2000-07-10
期刊:
The Journal of cell biology
影响因子:
--
作者:
Aharonovitz O;Zaun HC;Balla T;York JD;Orlowski J;Grinstein S
通讯作者:
Grinstein S
影响因子:
3.3
作者:
Cardone, RA;Bagorda, A;Reshkin, SJ
通讯作者:
Reshkin, SJ
影响因子:
56.9
作者:
Ghosh, M;Song, XY;Condeelis, JS
通讯作者:
Condeelis, JS