Kindlin-2 recruits paxillin and Arp2/3 to promote membrane protrusions during initial cell spreading.
Kindlin-2 recruits paxillin and Arp2/3 to promote membrane protrusions during initial cell spreading.
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DOI:
10.1083/jcb.201701176
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发表时间:
2017-11-06
期刊:
影响因子:
--
通讯作者:
Fässler R
中科院分区:
文献类型:
--
作者:
Böttcher RT;Veelders M;Rombaut P;Faix J;Theodosiou M;Stradal TE;Rottner K;Zent R;Herzog F;Fässler R
Cell spreading relies on the coordinated and dynamic regulation of integrin-mediated adhesions and actin structures. Böttcher et al. show that in the periphery of adhering cells kindlin-2 binds paxillin to activate Rac1 and the Arp2/3 complex to allow for Rac1-mediated membrane protrusions. Cell spreading requires the coupling of actin-driven membrane protrusion and integrin-mediated adhesion to the extracellular matrix. The integrin-activating adaptor protein kindlin-2 plays a central role for cell adhesion and membrane protrusion by directly binding and recruiting paxillin to nascent adhesions. Here, we report that kindlin-2 has a dual role during initial cell spreading: it binds paxillin via the pleckstrin homology and F0 domains to activate Rac1, and it directly associates with the Arp2/3 complex to induce Rac1-mediated membrane protrusions. Consistently, abrogation of kindlin-2 binding to Arp2/3 impairs lamellipodia formation and cell spreading. Our findings identify kindlin-2 as a key protein that couples cell adhesion by activating integrins and the induction of membrane protrusions by activating Rac1 and supplying Rac1 with the Arp2/3 complex.
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影响因子:
7.2
作者:
Devreotes, Peter;Horwitz, Alan Rick
通讯作者:
Horwitz, Alan Rick
影响因子:
4
作者:
Azimifar, S. Babak;Boettcher, Ralph T.;Faessler, Reinhard
通讯作者:
Faessler, Reinhard
影响因子:
21.3
作者:
Austen K;Ringer P;Mehlich A;Chrostek-Grashoff A;Kluger C;Klingner C;Sabass B;Zent R;Rief M;Grashoff C
通讯作者:
Grashoff C
DOI:
10.1084/jem.20071827
发表时间:
2007-12-24
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Nieswandt B;Moser M;Pleines I;Varga-Szabo D;Monkley S;Critchley D;Fässler R
通讯作者:
Fässler R
影响因子:
9.2
作者:
Olazabal, IM;Caron, E;Machesky, LM
通讯作者:
Machesky, LM