Cell Host & Microbe
Volume 12, Issue 4, 18 October 2012, Pages 432-444
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Review
IFN-Inducible GTPases in Host Cell Defense

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From plants to humans, the ability to control infection at the level of an individual cell—a process termed cell-autonomous immunity—equates firmly with survival of the species. Recent work has begun to unravel this programmed cell-intrinsic response and the central roles played by IFN-inducible GTPases in defending the mammalian cell’s interior against a diverse group of invading pathogens. These immune GTPases regulate vesicular traffic and protein complex assembly to stimulate oxidative, autophagic, membranolytic, and inflammasome-related antimicrobial activities within the cytosol, as well as on pathogen-containing vacuoles. Moreover, human genome-wide association studies and disease-related transcriptional profiling have linked mutations in the Immunity-Related GTPase M (IRGM) locus and altered expression of guanylate binding proteins (GBPs) with tuberculosis susceptibility and Crohn’s colitis.

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