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Seneca Valley virus 2C and 3C inhibit type I interferon production by inducing the degradation of RIG-I.

08:00 EDT 28th June 2019 | BioPortfolio

Summary of "Seneca Valley virus 2C and 3C inhibit type I interferon production by inducing the degradation of RIG-I."

Seneca Valley virus (SVV) is a member of the Picornaviridae family, which has been used to treat neuroendocrine cancer. The innate immune system plays an important role in SVV infection. However, few studies have elucidated the relationship between SVV infection and the host's antiviral response. In this study, SVV replication could induce the degradation of RIG-I in HEK-293T, SW620 and SK6 cells. And overexpressing retinoic acid-inducible gene I (RIG-I) could significantly inhibit SVV propagation. The viral protein 2C and 3C were essential for the degradation of RIG-I. Furthermore, 2C and 3C significantly reduced Sev or RIG-I-induced IFN-β production. Mechanistically, 2C and 3C induced RIG-I degradation through the caspase signaling pathway. Taken together, we demonstrate the antiviral role of RIG-I against SVV and the mechanism by which SVV 2C and 3C weaken the host innate immune system.

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Journal Details

This article was published in the following journal.

Name: Virology
ISSN: 1096-0341
Pages: 122-129

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