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• W2912376586 endingPage "e1007582" @default.
• W2912376586 startingPage "e1007582" @default.
• W2912376586 abstract "MDA5 belongs to the RIG-I-like receptor family and plays a non-redundant role in recognizing cytoplasmic viral RNA to induce the production of type I IFNs. Upon RNA ligand stimulation, we observed the redistribution of MDA5 from the cytosol to mitochondrial membrane fractions. However, the molecular mechanisms of MDA5 activation remain less understood. Here we show that 14-3-3η is an essential accessory protein for MDA5-dependent type I IFN induction. We found that several 14-3-3 isoforms may interact with MDA5 through the CARDs (N-MDA5), but 14-3-3η was the only isoform that could enhance MDA5-dependent IFNβ promoter activities in a dose-dependent manner. Knock-down of 14-3-3η in Huh7 cells impaired and delayed the kinetics of MDA5 oligomerization, which is a critical step for MDA5 activation. Consequently, the MDA5-dependent IFNβ promoter activities as well as IFNβ mRNA expression level were also decreased in the 14-3-3η knocked-down cells. We also demonstrated that 14-3-3η is essential in boosting the activation of MDA5-dependent antiviral innate immunity during viral infections. In conclusion, our results uncover a novel function of 14-3-3η to promote the MDA5-dependent IFNβ induction pathway by reducing the immunostimulatory potential of viral dsRNA within MDA5 activation signaling pathway." @default.
• W2912376586 created "2019-02-21" @default.
• W2912376586 creator A5007904172 @default.
• W2912376586 creator A5048200799 @default.
• W2912376586 creator A5062221055 @default.
• W2912376586 date "2019-02-11" @default.
• W2912376586 modified "2023-09-23" @default.
• W2912376586 title "The 14-3-3η chaperone protein promotes antiviral innate immunity via facilitating MDA5 oligomerization and intracellular redistribution" @default.
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• W2912376586 doi "https://doi.org/10.1371/journal.ppat.1007582" @default.
• W2912376586 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6386420" @default.
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• W2912376586 hasPublicationYear "2019" @default.
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