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Article: The role of nuclear NS1 protein in highly pathogenic H5N1 influenza viruses

TitleThe role of nuclear NS1 protein in highly pathogenic H5N1 influenza viruses
Authors
KeywordsInfluenza virus
NS1
Nuclear localization signal
HPAI
H5N1
Issue Date2017
PublisherElsevier France, Editions Scientifiques et Medicales. The Journal's web site is located at http://www.elsevier.com/locate/micinf
Citation
Microbes and Infection, 2017, v. 19 n. 12, p. 587-596 How to Cite?
AbstractThe non-structural protein (NS1) of influenza A viruses (IAV) performs multiple functions during viral infection. NS1 contains two nuclear localization signals (NLS): NLS1 and NLS2. The NS1 protein is located predominantly in the nucleus during the early stages of infection and subsequently exported to the cytoplasm. A nonsense mutation that results in a large deletion in the carboxy-terminal region of the NS1 protein that contains the NLS2 domain was found in some IAV subtypes, including highly pathogenic avian influenza (HPAI) H7N9 and H5N1 viruses. We introduced different mutations into the NLS domains of NS1 proteins in various strains of IAV, and demonstrated that mutation of the NLS2 region in the NS1 protein of HPAI H5N1 viruses severely affects its nuclear localization pattern. H5N1 viruses expressing NS1 protein that is unable to localize to the nucleus are less potent in antagonizing cellular antiviral responses than viruses expressing wild-type NS1. However, no significant difference was observed with respect to viral replication and pathogenesis. In contrast, the replication and antiviral defenses of H1N1 viruses are greatly attenuated when nuclear localization of the NS1 protein is blocked. Our data reveals a novel functional plasticity for NS1 proteins among different IAV subtypes.
Persistent Identifierhttp://hdl.handle.net/10722/247561
ISSN
2017 Impact Factor: 2.924
2015 SCImago Journal Rankings: 1.328
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorMok, BWY-
dc.contributor.authorLiu, H-
dc.contributor.authorChen, P-
dc.contributor.authorLiu, S-
dc.contributor.authorLau, SY-
dc.contributor.authorHuang, X-
dc.contributor.authorLiu, Y-
dc.contributor.authorWang, P-
dc.contributor.authorYuen, KY-
dc.contributor.authorChen, H-
dc.date.accessioned2017-10-18T08:29:11Z-
dc.date.available2017-10-18T08:29:11Z-
dc.date.issued2017-
dc.identifier.citationMicrobes and Infection, 2017, v. 19 n. 12, p. 587-596-
dc.identifier.issn1286-4579-
dc.identifier.urihttp://hdl.handle.net/10722/247561-
dc.description.abstractThe non-structural protein (NS1) of influenza A viruses (IAV) performs multiple functions during viral infection. NS1 contains two nuclear localization signals (NLS): NLS1 and NLS2. The NS1 protein is located predominantly in the nucleus during the early stages of infection and subsequently exported to the cytoplasm. A nonsense mutation that results in a large deletion in the carboxy-terminal region of the NS1 protein that contains the NLS2 domain was found in some IAV subtypes, including highly pathogenic avian influenza (HPAI) H7N9 and H5N1 viruses. We introduced different mutations into the NLS domains of NS1 proteins in various strains of IAV, and demonstrated that mutation of the NLS2 region in the NS1 protein of HPAI H5N1 viruses severely affects its nuclear localization pattern. H5N1 viruses expressing NS1 protein that is unable to localize to the nucleus are less potent in antagonizing cellular antiviral responses than viruses expressing wild-type NS1. However, no significant difference was observed with respect to viral replication and pathogenesis. In contrast, the replication and antiviral defenses of H1N1 viruses are greatly attenuated when nuclear localization of the NS1 protein is blocked. Our data reveals a novel functional plasticity for NS1 proteins among different IAV subtypes.-
dc.languageeng-
dc.publisherElsevier France, Editions Scientifiques et Medicales. The Journal's web site is located at http://www.elsevier.com/locate/micinf-
dc.relation.ispartofMicrobes and Infection-
dc.rightsPosting accepted manuscript (postprint): © <year>. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/-
dc.subjectInfluenza virus-
dc.subjectNS1-
dc.subjectNuclear localization signal-
dc.subjectHPAI-
dc.subjectH5N1-
dc.titleThe role of nuclear NS1 protein in highly pathogenic H5N1 influenza viruses-
dc.typeArticle-
dc.identifier.emailMok, BWY: bobomok@hku.hk-
dc.identifier.emailLau, SY: sylau926@hkucc.hku.hk-
dc.identifier.emailHuang, X: hxfsteve@hku.hk-
dc.identifier.emailLiu, Y: yenchin@hku.hk-
dc.identifier.emailWang, P: puiwang@hkucc.hku.hk-
dc.identifier.emailYuen, KY: kyyuen@hkucc.hku.hk-
dc.identifier.emailChen, H: hlchen@hku.hk-
dc.identifier.authorityYuen, KY=rp00366-
dc.identifier.authorityChen, H=rp00383-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.micinf.2017.08.011-
dc.identifier.pmid28903072-
dc.identifier.scopuseid_2-s2.0-85029705012-
dc.identifier.hkuros280515-
dc.identifier.volume19-
dc.identifier.issue12-
dc.identifier.spage587-
dc.identifier.epage596-
dc.identifier.isiWOS:000417930000004-
dc.publisher.placeFrance-

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