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Hepatitis C virus infection suppresses hepatitis B virus replication via the RIG-I-like helicase pathway.
Scientific Reports ( IF 3.8 ) Pub Date : 2020-01-22 , DOI: 10.1038/s41598-020-57603-9
Kazuhiro Murai 1 , Hayato Hikita 1 , Yugo Kai 1 , Yasuteru Kondo 2 , Makoto Fukuoka 1 , Keisuke Fukutomi 1 , Akira Doi 1 , Takuo Yamai 1 , Tasuku Nakabori 1 , Ryo Fukuda 2 , Takeshi Takahashi 3 , Kei Miyakawa 4 , Hiroshi Suemizu 3 , Akihide Ryo 4 , Ryoko Yamada 1 , Takahiro Kodama 1 , Ryotaro Sakamori 1 , Tomohide Tatsumi 1 , Tetsuo Takehara 1
Affiliation  

Mechanisms of hepatitis B virus (HBV) reactivation after hepatitis C virus (HCV) elimination by direct-acting antiviral (DAA) treatment in HBV/HCV-co-infected patients remain unclear. We examined RIG-I-like helicase (RLH) pathway activation by HBV mono-infection, HCV mono-infection or HBV/HCV co-infection and interference between HBV and HCV in primary human hepatocytes. Interference between HBV and HCV and HBV reactivation after DAA treatment in humanized-liver mice were assessed. HCV infection activated RLH pathway, as evidenced by RIG-I, ISG15 and ISG56 expression induction; HBV caused only RIG-I induction in vitro. RLH activation was also found in HBV/HCV-co-infected cells, and HBV replication were suppressed in HBV/HCV-co-infected than in HBV-mono-infected cells. siRNA-mediated double knockdown of ISG15 and ISG56 increased HBV replication in HBV/HCV-co-infected cells. HCV infection activated RLH pathway and suppressed HBV replication in humanized-liver mice. Subsequent elimination of HCV by DAA administration downregulated RLH pathway and upregulated HBV replication in mice. RLH pathway was activated in livers of chronic hepatitis C patients compared to those of chronic hepatitis B or non-B, non-C patients. The RLH pathway activation was downregulated by HCV elimination. In conclusion, HCV infection activated RLH pathway and suppressed HBV replication in human hepatocytes. HCV elimination upregulated HBV replication, probably through RLH pathway downregulation.

中文翻译:


丙型肝炎病毒感染通过 RIG-I 样解旋酶途径抑制乙型肝炎病毒复制。



在 HBV/HCV 合并感染患者中,通过直接作用抗病毒 (DAA) 治疗消除丙型肝炎病毒 (HCV) 后,乙型肝炎病毒 (HBV) 再激活的机制仍不清楚。我们研究了 HBV 单一感染、HCV 单一感染或 HBV/HCV 共感染对 RIG-I 样解旋酶 (RLH) 途径的激活以及原代人肝细胞中 HBV 和 HCV 之间的干扰。对人源化肝小鼠中 HBV 和 HCV 之间的干扰以及 DAA 治疗后 HBV 再激活进行了评估。 HCV感染激活了RLH通路,RIG-I、ISG15和ISG56表达诱导证明了这一点; HBV 在体外仅引起 RIG-I 诱导。在 HBV/HCV 共感染细胞中也发现了 RLH 激活,并且 HBV/HCV 共感染细胞中的 HBV 复制比 HBV 单一感染细胞中受到抑制。 siRNA 介导的 ISG15 和 ISG56 双重敲低增加了 HBV/HCV 共感染细胞中的 HBV 复制。 HCV 感染激活 RLH 通路并抑制人源化肝小鼠中的 HBV 复制。随后通过 DAA 消除 HCV,下调了 RLH 通路并上调了小鼠体内的 HBV 复制。与慢性乙型肝炎或非乙型、非丙型肝炎患者相比,慢性丙型肝炎患者的肝脏中 RLH 通路被激活。 RLH 途径的激活因 HCV 消除而下调。总之,HCV感染激活了RLH通路并抑制了人肝细胞中的HBV复制。 HCV 消除上调了 HBV 复制,可能是通过 RLH 通路下调实现的。
更新日期:2020-01-23
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