PEDV NSP8 inhibits IFN-III production induced by MAVS through downregulation of PEX13.

ABSTRACT: Porcine epidemic diarrhea virus (PEDV), an enteropathogenic coronavirus that causes severe intestinal disease in piglets, employs sophisticated strategies to subvert host antiviral immunity. While type III interferons (IFN-III) play a pivotal role in mucosal defense at intestinal epithelial barriers, the mechanisms underlying PEDV evasion of IFN-III signaling remain poorly understood. Given that peroxisomes serve as critical platforms for IFN-III signaling and that their abundance influences immune activation, we investigated the role of pexophagy in PEDV-mediated immune evasion. We demonstrated that the PEDV nonstructural protein NSP8 functions as a potent inhibitor of mitochondrial antiviral-signaling protein (MAVS)-dependent IFN-III production. Functional analyses revealed that NSP8 sig

SUBMITTER: Lou J 

PROVIDER: S-EPMC12691671 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature