MSX1 Modulates RLR-Mediated Innate Antiviral Signaling by Facilitating Assembly of TBK1-Associated Complexes
MSX1 Modulates RLR-Mediated Innate Antiviral Signaling by Facilitating Assembly of TBK1-Associated Complexes
复制标题
MSX1 通过促进 TBK1 相关复合物的组装来调节 RLR 介导的先天抗病毒信号
DOI：
10.4049/jimmunol.1600039
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发表时间：
2016-07-01
影响因子：
4.4
通讯作者：
Shu, Hong-Bing
中科院分区：
文献类型：
--
作者：
Chen, Liu-Ting;Hu, Ming-Ming;Shu, Hong-Bing
Recognition of viral dsRNA by the retinoic acid inducible gene-l like receptors (RLRs) triggers signaling cascades that lead to activation of the TBK1 kinase and transcription factor IFN regulatory factor 3, induction of downstream antiviral genes, and innate antiviral responses. In this study, we identified muscle segment homeoboxl (MSX1) as an important modulator of RLR-mediated signaling pathways. Knockdown or knockout of MSX1 significantly impaired Sendai virus triggered activation of TBK1 and IFN regulatory factor 3, induction of downstream antiviral genes, and cellular antiviral responses. Interestingly, MSX1 was translocated from the nucleus to cytoplasm, particularly mitochondria upon infection of Sendai virus. Biochemcially, MSX1 was important for assembly of TBKVIKK-related kinase-associated protein 1/TNFR-associated factor-associated NF-kappa B activator complexes. Our results suggest that MSX1 is an important component of RLR-mediated signaling and reveal mechanisms on innate immune responses against RNA viruses.
