id author title date pages extension mime words sentences flesch summary cache txt cord-333423-jhm7u8ka Wang, Dang Porcine Reproductive and Respiratory Syndrome Virus nsp11 Antagonizes Type I Interferon Signaling by Targeting IRF9 2019-05-15 .txt text/plain 7204 390 48 Furthermore, the nsp11-IRF9 interaction impaired the formation and nuclear translocation of the transcription factor complex IFN-stimulated gene factor 3 (ISGF3) in both nsp11-overexpressed and PRRSV-infected cells. Taking the results together, our study demonstrated that PRRSV nsp11 antagonizes type I IFN signaling by targeting IRF9 via a NendoU activity-independent mechanism, and this report describes a novel strategy evolved by PRRSV to counteract host innate antiviral responses, revealing a potential new function for PRRSV nsp11 in type I IFN signaling. The type I IFN-activated ISGF3 transcription complex containing tyrosine-phosphorylated STAT1 and STAT2 associated with IRF9 is rapidly translocated to the nucleus FIG 3 PRRSV nsp11 inhibits ISGF3-induced ISRE promoter activity. This provided further support for the notion that the ability of PRRSV nsp11 to block type I IFN signaling is independent of its endoribonuclease activity and cell cytotoxicity, because these three mutants had similar effects with respect to inhibiting the formation and nuclear translocation of ISGF3 compared with WT nsp11. ./cache/cord-333423-jhm7u8ka.txt ./txt/cord-333423-jhm7u8ka.txt