Host Long Noncoding RNA lncRNA-PAAN Regulates the Replication of Influenza A Virus.

Host Long Noncoding RNA lncRNA-PAAN Regulates the Replication of Influenza A Virus.
复制标题

宿主长非编码RNA lncRNA-PAAN调节甲型流感病毒的复制

DOI:
10.3390/v10060330
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发表时间:
2018-06-16
期刊:
Viruses
影响因子:
--
通讯作者:
Cen S
Cen S
中科院分区:
其他
文献类型:
--
作者:
Wang J;Wang Y;Zhou R;Zhao J;Zhang Y;Yi D;Li Q;Zhou J;Guo F;Liang C;Li X;Cen S

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甲型流感病毒(IAV)的生产性感染取决于宿主因素。然而,长非编码RNA(LncRNAs)在IAV感染中的作用在很大程度上仍未得到研究。在这项工作中,我们发现了一种人的lncRNA,命名为lncRNA-PAAN(PA相关的非编码RNA),可以增强IAV的复制。当IAV感染时,lncRNA-PAAN的水平增加,但其他病毒和干扰素处理都不增加,这表明IAV特异性地上调了lncRNA-PAAN的表达。沉默LncRNA-PAAN通过抑制病毒RNA依赖的RNA聚合酶(RdRp)的活性而显著降低IAV的复制。LncRNA-PAAN的这种功能是它与病毒PA蛋白结合的结果,PA蛋白是IAV RNA聚合酶复合体的关键组成部分。因此,LncRNA-PAAN的耗尽阻止了功能性RdRp的形成。综上所述,这些结果表明,lncRNA-PAAN促进了病毒RNA聚合酶的组装,从而保证了有效的病毒RNA合成。阐明lncRNAs在IAV感染中的作用有望促进我们对IAV发病机制的认识,并为新的抗IAV药物的开发开辟新的途径。
The productive infection of influenza A virus (IAV) depends on host factors. However, the involvement of long non-coding RNAs (lncRNAs) in IAV infection remains largely uninvestigated. In this work, we have discovered a human lncRNA, named lncRNA-PAAN (PA-associated noncoding RNA) that enhances IAV replication. The level of lncRNA-PAAN increases upon infection of IAV, but not other viruses, nor interferon treatment, suggesting specific up-regulation of lncRNA-PAAN expression by IAV. Silencing lncRNA-PAAN significantly decreases IAV replication through impairing the activity of viral RNA-dependent RNA polymerase (RdRp). This function of lncRNA-PAAN is a result of its association with viral PA protein, a key component of IAV RNA polymerase complex. Consequently, depletion of lncRNA-PAAN prevents the formation of functional RdRp. Together, these results suggest that lncRNA-PAAN promotes the assembly of viral RNA polymerase, thus warranting efficient viral RNA synthesis. Elucidating the functions of lncRNAs in IAV infection is expected to advance our understanding of IAV pathogenesis and open new avenues to the development of novel anti-IAV therapeutics.
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