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Cited by 576

The DOI matches its Crossref record; 8 of the 8 references it cites were found in a registry or an index.

Inhibition of Retinoic Acid-Inducible Gene I-Mediated Induction of Beta Interferon by the NS1 Protein of Influenza A Virus

Open access
Mibayashi, Masaki, Martínez-Sobrido, Luis, Loo, Yueh-Ming, Cárdenas, Washington B., Gale, Michael, García-Sastre, Adolfo·2007·Journal of Virology

Abstract

The retinoic acid-inducible gene I product (RIG-I) has been identified as a cellular sensor of RNA virus infection resulting in beta interferon (IFN-β) induction. However, many viruses are known to encode viral products that inhibit IFN-β production. In the case of influenza A virus, the viral nonstructural protein 1 (NS1) prevents the induction of the IFN-β promoter by inhibiting the activation of transcription factors, including IRF-3, involved in IFN-β transcriptional activation. The inhibitory properties of NS1 appear to be due at least in part to its binding to double-stranded RNA (dsRNA), resulting in the sequestration of this viral mediator of RIG-I activation. However, the precise effects of NS1 on the RIG-I-mediated induction of IFN-β have not been characterized. We now report that the NS1 of influenza A virus interacts with RIG-I and inhibits the RIG-I-mediated induction of IFN-β. This inhibition was apparent even when a mutant RIG-I that is constitutively activated (in the absence of dsRNA) was used to trigger IFN-β production. Coexpression of RIG-I, its downstream signaling partner, IPS-1, and NS1 resulted in increased levels of RIG-I and NS1 within an IPS-1-rich, solubilization-resistant fraction after cell lysis. These results suggest that RIG-I, IPS-1, and NS1 become part of the same complex. Consistent with this idea, NS1 was also found to inhibit IFN-β promoter activation by IPS-1 overexpression. Our results indicate that, in addition to sequestering dsRNA, the NS1 of influenza A virus binds to RIG-I and inhibits downstream activation of IRF-3, preventing the transcriptional induction of IFN-β.

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Metadata

Authors
Mibayashi, M., Martínez-Sobrido, L., Loo, Y.-M., Cárdenas, W. B., Gale, M., & García-Sastre, A.
Venue
Journal of Virology
Published
2007-01-15
Volume
81
Issue
2
Pages
514-524
ISSN
  • 0022-538X (ISSN-L)
  • 1098-5514
OpenAlex
W2163853272
Cited by
576
References
8
FWCI
13.54
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Inhibition of Retinoic Acid-Inducible Gene I-Mediated Induction of Beta Interferon by the NS1 Protein of Influenza A Virus. https://app.cochat.ai/papers/10.1128/jvi.01265-06
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Mibayashi, M., Martínez-Sobrido, L., Loo, Y.-M., Cárdenas, W. B., Gale, M., & García-Sastre, A. (2007). Inhibition of Retinoic Acid-Inducible Gene I-Mediated Induction of Beta Interferon by the NS1 Protein of Influenza A Virus. Journal of Virology. https://doi.org/10.1128/jvi.01265-06

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