Glycogen Synthase Kinase 3β Regulates Antiviral Responses of TLR3 via TRAF2-Src Axis.
[No authors listed]
摘要
The protein tyrosine kinase Src regulates the synthesis of TLR3-mediated IFN-β via the TBK1-IFN regulatory factor 3 axis. However, the molecular mechanisms regulating Src activity in TLR3 signaling remain unclear. In this study, we report that GSK3β regulates Src phosphorylation via TNFR-associated factor 2 (TRAF2)-mediated Src ubiquitination. GSK3β deficiency in mouse embryonic fibroblasts significantly reduces polyinosinic:polycytidylic acid-induced IFN-β and IFN-stimulated gene expression, which is caused by diminished phosphorylation of Src at tyrosine 416. Src undergoes polyinosinic:polycytidylic acid-dependent lysine 63 chain ubiquitination, and TRAF2 is a direct E3 ligase for Src. Our study reveals novel mechanisms underlying TLR3-mediated antiviral responses mediated via the GSK3β-TRAF2-Src axis.
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基因功能
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原始数据
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文献解读
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