Integrin activation and matrix binding mediate cellular responses to mechanical stretch - PubMed (original) (raw)

. 2005 Apr 29;280(17):16546-9.

doi: 10.1074/jbc.C400455200. Epub 2005 Mar 10.

Affiliations

Free article

Integrin activation and matrix binding mediate cellular responses to mechanical stretch

Akira Katsumi et al. J Biol Chem. 2005.

Free article

Abstract

Mechanical tension is a critical determinant of cell growth, differentiation, apoptosis, migration, and development. Integrins have been implicated in sensing force but little is known about how forces are transduced to biochemical signals. We now show that mechanical strain stimulates conformational activation of integrin alphavbeta3 in NIH3T3 cells. Integrin activation is mediated by phosphoinositol 3-kinase and is followed by an increase in integrin binding to extracellular matrix proteins. Mechanical stretch stimulation of JNK was dependent on new integrin binding to extracellular matrix. These data define a molecular mechanism for the role of integrins in mechanotransduction.

PubMed Disclaimer

Similar articles

Cited by

Publication types

MeSH terms

Substances

LinkOut - more resources