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- W137372458 startingPage "135" @default.
- W137372458 abstract "The linkage of the actin cytoskeleton to extracellular matrices (ECMs) at focal adhesions provides a physical path for cells to exert traction forces on substrates during cellular processes such as migration and morphogenesis. Mechanical strength of the actin-to-ECM linkage increases in response to forces loaded at this linkage. This is achieved by local accumulations of actin filaments, as well as linker proteins connecting actins to integrins, at force-bearing adhesion sites, which leads to an increase in the number of molecular bonds between the actin cytoskeleton- and ECM-bound integrins. Zyxin-dependent actin polymerization and filamin-mediated actin bundling are seemingly involved in the force-dependent actin accumulation. Each actin-integrin link is primarily mediated by the linker protein talin, which is strengthened by another linker protein vinculin connecting the actin filaments to talin in a force-dependent manner. This eliminates slippage between the actin cytoskeleton and talin (clutch mechanism), thus playing a crucial role in creating cell membrane protrusions mediated by actin polymerization. Finally, each integrin-ECM bond is also strengthened when a force is loaded on it, which ensures force transmission at focal adhesions, contributing to stable cell-substrate adhesion in cell migration." @default.
- W137372458 created "2016-06-24" @default.
- W137372458 creator A5031498697 @default.
- W137372458 creator A5064068441 @default.
- W137372458 creator A5089520394 @default.
- W137372458 date "2014-01-01" @default.
- W137372458 modified "2023-10-10" @default.
- W137372458 title "Molecular Mechanisms Underlying the Force-Dependent Regulation of Actin-to-ECM Linkage at the Focal Adhesions" @default.
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