SARS-CoV-2 infection activates a subset of intrinsic pathways to inhibit type I interferons in vitro and in vivo.

SARS-CoV-2 infection activates a subset of intrinsic pathways to inhibit type I interferons in vitro and in vivo.
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SARS-CoV-2 感染激活一组内在途径来抑制体外和体内 I 型干扰素

DOI:
10.7150/ijms.56630
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发表时间:
2021
影响因子:
3.6
通讯作者:
Ren Z
Ren Z
中科院分区:
医学4区
文献类型:
--
作者:
Luo W;Huang L;Wang X;Ma Y;Xiao J;Song X;Liu P;Wang Y;Wang Y;Ren Z

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SARS-CoV-2感染对人类健康构成全球性挑战。病毒感染后,宿主细胞启动先天性抗病毒反应,主要涉及I型干扰素(I-IFN),以快速消除入侵病毒。以往的研究表明,SARS-CoV-2感染在体外和体内限制了I-IFN的表达,但其潜在的机制尚未完全阐明。在本研究中,我们进行了数据挖掘和纵向数据分析,使用SARS-CoV-2感染的正常人支气管上皮细胞(NHBE)和雪貂,结果证实了强抑制作用的SARS-CoV-2对诱导的I-IFN。此外,我们确定的基因是负相关的IFNB 1表达在体外和体内的基础上皮尔逊相关分析。我们发现,SARS-CoV-2激活许多内在途径,如昼夜节律,磷脂酰肌醇信号系统,过氧化物酶体和TNF信号通路,以抑制I-IFN。这些内在抑制途径共同促进SARS-CoV-2的成功免疫逃避。我们的研究阐明了SARS-CoV-2在体外和体内逃避宿主先天性抗病毒反应的潜在机制,为靶向这些免疫逃避相关途径对抗SARS-CoV-2感染提供了理论依据。
SARS-CoV-2 infection poses a global challenge to human health. Upon viral infection, host cells initiate the innate antiviral response, which primarily involves type I interferons (I-IFNs), to enable rapid elimination of the invading virus. Previous studies revealed that SARS-CoV-2 infection limits the expression of I-IFNs in vitro and in vivo, but the underlying mechanism remains incompletely elucidated. In the present study, we performed data mining and longitudinal data analysis using SARS-CoV-2-infected normal human bronchial epithelial (NHBE) cells and ferrets, and the results confirmed the strong inhibitory effect of SARS-CoV-2 on the induction of I-IFNs. Moreover, we identified genes that are negatively correlated with IFNB1 expression in vitro and in vivo based on Pearson correlation analysis. We found that SARS-CoV-2 activates numerous intrinsic pathways, such as the circadian rhythm, phosphatidylinositol signaling system, peroxisome, and TNF signaling pathways, to inhibit I-IFNs. These intrinsic inhibitory pathways jointly facilitate the successful immune evasion of SARS-CoV-2. Our study elucidates the underlying mechanism by which SARS-CoV-2 evades the host innate antiviral response in vitro and in vivo, providing theoretical evidence for targeting these immune evasion-associated pathways to combat SARS-CoV-2 infection.
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