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- W3216861610 abstract "Host nucleic acid receptors can recognize the viral DNA or RNA upon virus infection, which further triggers multiple signal pathways to promote the translocation of the interferon regulatory factor 3 (IRF3) into nucleus and produce type I interferon (IFN), leading to the host antiviral response. Here, we report a novel negative regulator Annexin A2 (ANXA2) that regulates type I IFN production through multiple mechanisms. Ectopic expression of ANXA2 inhibited the production of type I IFN induced by DNA- and RNA viruses and enhanced virus replication, while knockout of ANXA2 expression enhanced the production of type I IFN and inhibited virus replication. Mechanistically, ANXA2 not only disrupted MDA5 recruiting MAVS, but also inhibited the interaction between MAVS and TRAF3 upon RNA virus infection. In addition, ANXA2 impacted the translocation of STING from endoplasmic reticulum to Golgi apparatus upon DNA virus infection. Interestingly, ANXA2 also inhibited IRF3 phosphorylation and nuclear translocation through competing with TANK-binds kinase 1 (TBK1) and inhibitor-κB kinase ϵ (IKKϵ) for binding to IRF3. Anxa2 deficiency in vivo increased the production of type I IFN, which resulted in suppression of encephalomyocarditis virus (EMCV) replication. Our findings reveal that ANXA2, as a negative regulator of type I IFN production, plays an important role in regulating the host antiviral responses." @default.
- W3216861610 created "2021-12-06" @default.
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- W3216861610 date "2021-12-02" @default.
- W3216861610 modified "2023-09-27" @default.
- W3216861610 title "ANXA2 enhances virus replication through negatively regulating cGAS-STING and RLRs2 mediated signal pathway" @default.
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- W3216861610 doi "https://doi.org/10.1101/2021.12.01.470696" @default.
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