Focal adhesion kinase is a component of antiviral RIG-I-like receptor signaling.

Journal Article (Journal Article)

Viruses modulate the actin cytoskeleton at almost every step of their cellular journey from entry to egress. Cellular sensing of these cytoskeletal changes may function in the recognition of viral infection. Here we show that focal adhesion kinase (FAK), a focal adhesion localized tyrosine kinase that transmits signals between the extracellular matrix and the cytoplasm, serves as a RIG-I-like receptor antiviral signaling component by directing mitochondrial antiviral signaling adaptor (MAVS) activation. Cells deficient in FAK are highly susceptible to RNA virus infection and attenuated in antiviral signaling. We show that FAK interacts with MAVS at the mitochondrial membrane in a virus infection-dependent manner and potentiates MAVS-mediated signaling via a kinase-independent mechanism. A cysteine protease encoded by enteroviruses cleaves FAK to suppress its role in innate immune signaling. These findings suggest that FAK serves as a link between cytoskeletal perturbations that occur during virus infection and activation of innate immune signaling.

Full Text

Duke Authors

Cited Authors

  • Bozym, RA; Delorme-Axford, E; Harris, K; Morosky, S; Ikizler, M; Dermody, TS; Sarkar, SN; Coyne, CB

Published Date

  • February 16, 2012

Published In

Volume / Issue

  • 11 / 2

Start / End Page

  • 153 - 166

PubMed ID

  • 22341464

Pubmed Central ID

  • 22341464

Electronic International Standard Serial Number (EISSN)

  • 1934-6069

Digital Object Identifier (DOI)

  • 10.1016/j.chom.2012.01.008

Language

  • eng

Conference Location

  • United States