Negative Regulation of Virus-triggered IFN-β Signaling Pathway by Alternative Splicing of TBK1
Induction of Type I IFNs is a central event in antiviral responses and must be tightly controlled. The protein kinase TBK1 is critically involved in virus-triggered type I IFN signaling. In this study, we identify an alternatively spliced isoform of TBK1, termed TBK1s, which lacks exons 3â6. Upon...
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Published in | The Journal of biological chemistry Vol. 283; no. 51; p. 35590 |
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Main Authors | , , , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
American Society for Biochemistry and Molecular Biology
19.12.2008
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Online Access | Get full text |
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Summary: | Induction of Type I IFNs is a central event in antiviral responses and must be tightly controlled. The protein kinase TBK1
is critically involved in virus-triggered type I IFN signaling. In this study, we identify an alternatively spliced isoform
of TBK1, termed TBK1s, which lacks exons 3â6. Upon Sendai virus (SeV) infection, TBK1s is induced in both human and mouse
cells and binds to RIG-1, disrupting the interaction between RIG-I and VISA. Consistent with that result, overexpression of
TBK1s inhibits IRF3 nuclear translocation and leads to a shutdown of SeV-triggered IFN-β production. Taken together, our data
indicate that TBK1s plays an inhibitory role in virus-triggered IFN-β signaling pathways. |
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ISSN: | 0021-9258 1083-351X |
DOI: | 10.1074/jbc.M805775200 |