Membrane perturbation elicits an IRF3-dependent, interferon-independent antiviral response |
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Authors: | Noyce Ryan S Taylor Kathryne Ciechonska Marta Collins Susan E Duncan Roy Mossman Karen L |
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Institution: | Department of Biochemistry and Biomedical Sciences, Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, Canada. |
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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. |
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