MicroRNA-9-1 Attenuates Influenza A Virus Replication via Targeting Tankyrase 1.

MicroRNA-9-1 Attenuates Influenza A Virus Replication via Targeting Tankyrase 1.
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DOI:
10.1159/000532063
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发表时间:
2023
影响因子:
5.3
通讯作者:
--
中科院分区:
医学2区
文献类型:
--
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不稳定的流感基因组会导致病毒对针对病毒蛋白的抗病毒药物产生耐药性。因此,鉴定病毒复制所必需的宿主因子可能为开发新型抗病毒疗法铺平道路。在这项研究中,我们研究了聚(ADP-核糖)聚合酶坦科聚合酶 1 (TNKS1) 和内源性小非编码 RNA miR-9-1 在甲型流感病毒 (IAV) 感染中的作用。在感染 IAV 的人肺上皮细胞和小鼠肺中观察到 TNKS1 表达增加。通过 RNA 干扰敲低 TNKS1 可抑制流感病毒复制。使用 TNKS1 3'-非翻译区 (3'-UTR) 报告基因检测和预测的 microRNA 进行筛选,确定 miR-9-1 靶向 TNKS1。通过病毒 mRNA 和蛋白质水平以及病毒产量测量,miR-9-1 的过度表达减少了肺上皮细胞中流感病毒的复制。 miR-9-1 诱导 I 型干扰素产生并增强细胞培养物中 STAT1 的磷酸化。使用腺病毒载体在小鼠肺部异位表达 miR-9-1 可增强 I 型干扰素反应,抑制病毒复制,并降低对 IAV 感染的易感性。我们的结果表明 miR-9-1 是一种抗流感 microRNA,其靶向 TNKS1 并增强细胞抗病毒状态。
An unstable influenza genome leads to the virus resistance to antiviral drugs that target viral proteins. Thus, identification of host factors essential for virus replication may pave the way to develop novel antiviral therapies. In this study, we investigated the roles of the poly(ADP-ribose) polymerase enzyme, tankyrase 1 (TNKS1), and the endogenous small noncoding RNA, miR-9-1, in influenza A virus (IAV) infection. Increased expression of TNKS1 was observed in IAV-infected human lung epithelial cells and mouse lungs. TNKS1 knockdown by RNA interference repressed influenza viral replication. A screen using TNKS1 3′-untranslation region (3′-UTR) reporter assays and predicted microRNAs identified that miR-9-1 targeted TNKS1. Overexpression of miR-9-1 reduced influenza viral replication in lung epithelial cells as measured by viral mRNA and protein levels as well as virus production. miR-9-1 induced type I interferon production and enhanced the phosphorylation of STAT1 in cell culture. The ectopic expression of miR-9-1 in the lungs of mice by using an adenoviral viral vector enhanced type I interferon response, inhibited viral replication, and reduced susceptibility to IAV infection. Our results indicate that miR-9-1 is an anti-influenza microRNA that targets TNKS1 and enhances cellular antiviral state.
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