Antagonistic regulation of actin dynamics and cell motility by TRPC5 and TRPC6 channels.

Antagonistic regulation of actin dynamics and cell motility by TRPC5 and TRPC6 channels.
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DOI:
10.1126/scisignal.2001200
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发表时间:
2010-10-26
期刊:
影响因子:
7.3
通讯作者:
Greka A
Greka A
中科院分区:
生物学1区
文献类型:
--
作者:
Tian D;Jacobo SM;Billing D;Rozkalne A;Gage SD;Anagnostou T;Pavenstädt H;Hsu HH;Schlondorff J;Ramos A;Greka A

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The Rho family of small guanosine triphosphatases (Rho GTPases: RhoA, Cdc42, and Rac1) regulates many aspects of cell behavior, including actin dynamics and cell migration. The generation of calcium ion (Ca2+) microdomains is critical in promoting cell migration because they control the localized activity of Rho GTPases. We identified receptor-activated TRPC5 and TRPC6 (transient receptor potential canonical type 5 and 6) channels as antagonistic regulators of actin remodeling and cell motility in fibroblasts and kidney podocytes. We show that TRPC5 is in a molecular complex with Rac1, whereas TRPC6 is in a molecular complex with RhoA. TRPC5-mediated Ca2+ influx induces Rac1 activation, thereby promoting cell migration, whereas TRPC6-mediated Ca2+ influx increases RhoA activity, thereby inhibiting cell migration. Our data unveil antagonistic Ca2+ influx pathways as a conserved signaling mechanism for the integrated regulation of cell migration.
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