The VP3 Protein of Bluetongue Virus Associates with the MAVS Complex and Interferes with the RIG-I-Signaling Pathway
2021
Pourcelot, Marie | Amaral Moraes, Rayane | Fablet, Aurore | Bréard, Emmanuel | Sailleau, Corinne | Viarouge, Cyril | Postic, Lydie | Zientara, Stéphan | Caignard, Grégory | Vitour, Damien | Virologie UMR1161 (VIRO) ; École nationale vétérinaire d'Alfort (ENVA)-Laboratoire de santé animale, sites de Maisons-Alfort et de Normandie ; Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | ANSES | INRAE | ENVA | ANR-10-LABX-0062,IBEID,Integrative Biology of Emerging Infectious Diseases(2010)
International audience
Mostrar más [+] Menos [-]Inglés. Bluetongue virus (BTV), an arbovirus transmitted by Culicoides biting midges, is a major concern of wild and domestic ruminants. While BTV induces type I interferon (alpha/beta interferon [IFN-α/β]) production in infected cells, several reports have described evasion strategies elaborated by this virus to dampen this intrinsic, innate response. In the present study, we suggest that BTV VP3 is a new viral antagonist of the IFN-β synthesis. Indeed, using split luciferase and coprecipitation assays, we report an interaction between VP3 and both the mitochondrial adapter protein MAVS and the IRF3-kinase IKKε. Overall, this study describes a putative role for the BTV structural protein VP3 in the control of the antiviral response.
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