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Membrane perturbation elicits an IRF3-dependent, interferon-independent antiviral response.

ABSTRACT: We previously found that enveloped virus binding and penetration are necessary to initiate an interferon-independent, IRF3-mediated antiviral response. To investigate whether membrane perturbations that accompany membrane fusion-dependent enveloped-virus entry are necessary and sufficient for antiviral-state induction, we utilized a reovirus fusion-associated small transmembrane (FAST) protein. Membrane disturbances during FAST protein-mediated fusion, in the absence of additional innate immune response triggers, are sufficient to elicit interferon-stimulated gene induction and establishment of an antiviral state. Using sensors of membrane disruption to activate an IRF3-dependent, interferon-independent antiviral state may provide cells with a rapid, broad-spectrum innate immune response to enveloped-virus infections.

SUBMITTER: Noyce RS

PROVIDER: S-EPMC3187479 | biostudies-literature | 2011 Oct

REPOSITORIES: biostudies-literature

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Membrane perturbation elicits an IRF3-dependent, interferon-independent antiviral response.

Noyce Ryan S RS Taylor Kathryne K Ciechonska Marta M Collins Susan E SE Duncan Roy R Mossman Karen L KL

Journal of virology 20110803 20

We previously found that enveloped virus binding and penetration are necessary to initiate an interferon-independent, IRF3-mediated antiviral response. To investigate whether membrane perturbations that accompany membrane fusion-dependent enveloped-virus entry are necessary and sufficient for antiviral-state induction, we utilized a reovirus fusion-associated small transmembrane (FAST) protein. Membrane disturbances during FAST protein-mediated fusion, in the absence of additional innate immune ...[more]

PMID: 21813605

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