The DOI matches its Crossref record; 36 of the 36 references it cites were found in a registry or an index.
A Single-Amino-Acid Substitution in the NS1 Protein Changes the Pathogenicity of H5N1 Avian Influenza Viruses in Mice
Open accessAbstract
In this study, we explored the molecular basis determining the virulence of H5N1 avian influenza viruses in mammalian hosts by comparing two viruses, A/Duck/Guangxi/12/03 (DK/12) and A/Duck/Guangxi/27/03 (DK/27), which are genetically similar but differ in their pathogenicities in mice. To assess the genetic basis for this difference in virulence, we used reverse genetics to generate a series of reassortants and mutants of these two viruses. We found that a single-amino-acid substitution of serine for proline at position 42 (P42S) in the NS1 protein dramatically increased the virulence of the DK/12 virus in mice, whereas the substitution of proline for serine at the same position (S42P) completely attenuated the DK/27 virus. We further demonstrated that the amino acid S42 of NS1 is critical for the H5N1 influenza virus to antagonize host cell interferon induction and for the NS1 protein to prevent the double-stranded RNA-mediated activation of the NF-κB pathway and the IRF-3 pathway. Our results indicate that the NS1 protein is critical for the pathogenicity of H5N1 influenza viruses in mammalian hosts and that the amino acid S42 of NS1 plays a key role in undermining the antiviral immune response of the host cell.
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Cites
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Self-citationInfluenza A Virus Lacking the NS1 Gene Replicates in Interferon-Deficient Systems
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Cited by
The multifunctional NS1 protein of influenza A viruses
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Metadata
- Authors
- Jiao, P., Tian, G., Li, Y., Deng, G., Jiang, Y., Liu, C., Liu, W., Bu, Z., Kawaoka, Y., & Chen, H.
- Venue
- Journal of Virology
- Publisher
- American Society for Microbiology
- Published
- 2008-02
- Volume
- 82
- Issue
- 3
- Pages
- 1146-1154
- ISSN
- 0022-538X (ISSN-L)
- 1098-5514
- OpenAlex
- W2150403537
- Cited by
- 469
- References
- 36
- FWCI
- 11.93
- Type
- journal article
- Language
- en
- Open access
- green
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- Jiao, P., Tian, G., Li, Y., Deng, G., Jiang, Y., Liu, C., Liu, W., Bu, Z., Kawaoka, Y., & Chen, H. (2008). A Single-Amino-Acid Substitution in the NS1 Protein Changes the Pathogenicity of H5N1 Avian Influenza Viruses in Mice. Journal of Virology. https://doi.org/10.1128/jvi.01698-07
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