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Poor growth of human adenovirus-12 compared to adenovirus-2 correlates with a failure to impair PKR activation during the late phase of infection
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Biochemistry and Microbiology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Biochemistry and Microbiology.
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2015 (English)In: Virology, ISSN 0042-6822, E-ISSN 1096-0341, Vol. 475, 120-128 p.Article in journal (Refereed) Published
Abstract [en]

Human adenovirus type 12 (HAdV-12) displays a relatively low virulence and slow replication in cultured human cells, which is manifested by premature death of HAdV-12-infected cells. Whereas HAdV-2 induction of IFN-beta expression was transient, HAdV-12-infected cells maintained high levels of IFN-beta expression, protein kinase R (PKR) activation and eIF-2 alpha phosphorylation throughout the infectious cycle. The importance of the IFN-inducible PKR kinase in restriction of HAdV-12 was supported by the enhanced growth of the virus following PKR knockdown in HeLa cells. Ectopic expression of HAdV-2 VA RNAI increased HAdV-12 hexon protein expression, suggesting that insufficient VA RNA expression contributes to the restricted growth of HAdV-12. Although some adenovirus species are known to persist in human lymphoid tissues, HAdV12 has so far not been found. Thus, it is possible that the inability of HAdV12 to evade the INF response may have implications for the virus to establish long-lasting or persistent infections. (C) 2014 Elsevier Inc. All rights reserved.

Place, publisher, year, edition, pages
2015. Vol. 475, 120-128 p.
Keyword [en]
Adenovirus, VA RNA, IFN, PKR, eIF2 alpha
National Category
Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy)
Identifiers
URN: urn:nbn:se:uu:diva-245366DOI: 10.1016/j.virol.2014.11.012ISI: 000348176500012PubMedID: 25462352OAI: oai:DiVA.org:uu-245366DiVA: diva2:791174
Available from: 2015-02-26 Created: 2015-02-26 Last updated: 2017-12-04Bibliographically approved

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Wu, ChengjunAkusjärvi, GöranSvensson, Catharina

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