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المؤلفون: Yasuo Ariumi, Masanori Ikeda, Hiromichi Dansako, Nobuyuki Kato, Makoto Hijikata, Takaji Wakita, Kunitada Shimotohno, Misao Kuroki

المصدر: Biochemical and Biophysical Research Communications. 430(2):592-597

مصطلحات موضوعية: INI1, Chromosomal Proteins, Non-Histone, viruses, Biophysics, Lipid droplet, Hepacivirus, Promyelocytic Leukemia Protein, Biology, Virus Replication, Biochemistry, Cell Line, DEAD-box RNA Helicases, Small hairpin RNA, chemistry.chemical_compound, Promyelocytic leukemia protein, Gene Knockdown Techniques, DDX5, Humans, Replicon, Molecular Biology, Gene knockdown, PML, Hepatitis C virus, Tumor Suppressor Proteins, Nuclear Proteins, RNA, virus diseases, Tumor suppressor, SMARCB1 Protein, Cell Biology, Virology, digestive system diseases, DNA-Binding Proteins, chemistry, Viral replication, biology.protein, RNA, Viral, Transcription Factors

الوصف: PML tumor suppressor protein, which forms discrete nuclear structures termed PML-nuclear bodies, has been associated with several cellular functions, including cell proliferation, apoptosis and antiviral defense. Recently, it was reported that the HCV core protein colocalizes with PML in PML-NBs and abrogates the PML function through interaction with PML. However, role(s) of PML in HCV life cycle is unknown. To test whether or not PML affects HCV life cycle, we examined the level of secreted HCV core and the infectivity of HCV in the culture supernatants as well as the level of HCV RNA in HuH-7-derived RSc cells, in which HCV-JFH1 can infect and efficiently replicate, stably expressing short hairpin RNA targeted to PML. In this context, the level of secreted HCV core and the infectivity in the supernatants from PML knockdown cells was remarkably reduced, whereas the level of HCV RNA in the PML knockdown cells was not significantly affected in spite of very effective knockdown of PML. In fact, we showed that PML is unrelated to HCV RNA replication using the subgenomic HCV-JFH1 replicon RNA, JRN/3-5B. Furthermore, the infectivity of HCV-like particle in the culture supernatants was significantly reduced in PML knockdown JRN/3-5B cells expressing core to NS2 coding region of HCV-JFH1 genome using the trans-packaging system. Finally, we also demonstrated that INI1 and DDX5, the PML-related proteins, are involved in HCV production. Taken together, these findings suggest that PML is required for HCV production.

URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8151027d368efcf4451215dd2b5c5d7e
https://ousar.lib.okayama-u.ac.jp/50636

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