國家衛生研究院 NHRI:Item 3990099045/8179
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    题名: Reticulon 3 interacts with NS4B of the hepatitis C virus and negatively regulates viral replication by disrupting NS4B self-interaction
    作者: Wu, MJ;Ke, PY;Hsu, JTA;Yeh, CT;Horng, JT
    贡献者: Institute of Biotechnology and Pharmaceutical Research
    摘要: The non-structural protein 4B (NS4B) of the hepatitis C virus (HCV) is an endoplasmic reticulum (ER) membrane protein comprising two consecutive amphipathic α-helical domains (AH1 and AH2). Its self-oligomerization via the AH2 domain is required for the formation of the membranous web that is necessary for viral replication. Previously, we reported that the host-encoded ER-associated reticulon 3 (RTN3) protein is involved in the formation of the replication-associated membranes of (+)RNA enteroviruses during viral replication. In this study, we demonstrated that the second transmembrane region of RTN3 competed for, and bound to, the AH2 domain of NS4B, thus abolishing NS4B self-interaction and leading to the downregulation of viral replication. This interaction was mediated by two crucial residues, lysine 52 and tyrosine 63, of AH2, and was regulated by the AH1 domain. The silencing of RTN3 in Huh7 and AVA5 cells harbouring an HCV replicon enhanced the replication of HCV, which was counteracted by the overexpression of recombinant RTN3. The synthesis of viral RNA was also increased in siRNA-transfected human primary hepatocytes infected with HCV derived from cell culture. Our results demonstrated that RTN3 acted as a restriction factor to limit the replication of HCV.
    日期: 2014-11
    關聯: Cellular Microbiology. 2014 Nov;16(11):1603-1618.
    Link to: http://dx.doi.org/10.1111/cmi.12318
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=1462-5814&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000343990400001
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84916599169
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