SARS-CoV-2-Encoded MiRNAs Inhibit Host Type I Interferon Pathway and Mediate Allelic Differential Expression of Susceptible Gene.

SARS-CoV-2-Encoded MiRNAs Inhibit Host Type I Interferon Pathway and Mediate Allelic Differential Expression of Susceptible Gene.
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SARS-CoV-2 编码的 MiRNA 抑制宿主 I 型干扰素途径并介导易感基因的等位基因差异表达。

DOI:
10.3389/fimmu.2021.767726
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发表时间:
2021
影响因子:
7.3
通讯作者:
Tang Y
Tang Y
中科院分区:
医学2区
文献类型:
--
作者:
Zhu Y;Zhang Z;Song J;Qian W;Gu X;Yang C;Shen N;Xue F;Tang Y

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严重急性呼吸综合征冠状病毒 2 (SARS-CoV-2) 感染导致 2019 年冠状病毒病 (COVID-19) 迅速传播,已在全球范围内引发公共卫生危机。 SARS-CoV-2 感染和病毒与宿主相互作用的分子机制仍不清楚。在这项研究中,我们鉴定了 SARS-CoV-2 编码的四种独特的类似 microRNA 的小 RNA。 SCV2-miR-ORF1ab-1-3p 和 SCV2-miR-ORF1ab-2-5p 通过靶向 I 型干扰素信号通路中的多个基因,在逃避 I 型干扰素反应中发挥重要作用。特别值得一提的是,高表达的SCV2-miR-ORF1ab-2-5p会抑制宿主先天免疫反应中的一些关键基因,如IRF7、IRF9、STAT2、OAS1和OAS2。还发现 SCV2-miR-ORF1ab-2-5p 介导 COVID-19 易感基因 OAS1 的等位基因差异表达。总之,这些结果表明 SARS-CoV-2 使用其 miRNA 来逃避 I 型干扰素反应,并将功能性病毒序列与宿主的易感遗传背景联系起来。
Infection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), causing the rapid spread of coronavirus disease 2019 (COVID-19), has generated a public health crisis worldwide. The molecular mechanisms of SARS-CoV-2 infection and virus–host interactions are still unclear. In this study, we identified four unique microRNA-like small RNAs encoded by SARS-CoV-2. SCV2-miR-ORF1ab-1-3p and SCV2-miR-ORF1ab-2-5p play an important role in evasion of type I interferon response through targeting several genes in type I interferon signaling pathway. Particularly worth mentioning is that highly expressed SCV2-miR-ORF1ab-2-5p inhibits some key genes in the host innate immune response, such as IRF7, IRF9, STAT2, OAS1, and OAS2. SCV2-miR-ORF1ab-2-5p has also been found to mediate allelic differential expression of COVID-19-susceptible gene OAS1. In conclusion, these results suggest that SARS-CoV-2 uses its miRNAs to evade the type I interferon response and links the functional viral sequence to the susceptible genetic background of the host.
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