SARS-CoV-2 RNAs are processed into 22-nt vsRNAs in Vero cells.

SARS-CoV-2 RNAs are processed into 22-nt vsRNAs in Vero cells.
复制标题

SARS-CoV-2 RNA 在 Vero 细胞中被加工成 22-nt vsRNA

DOI:
10.3389/fimmu.2022.1008084
复制
发表时间:
2022
影响因子:
7.3
通讯作者:
Zhang X
Zhang X
中科院分区:
医学2区
文献类型:
--
作者:
Liu Y;Rao J;Mi Y;Chen L;Feng L;Li Q;Geng J;Yang X;Zhan X;Ren L;Chen J;Zhang X

文献摘要

参考文献

被引文献

相似文献

严重急性呼吸道综合征冠状病毒2型(SARS-CoV-2)在全球范围内引起了大流行,在世界各地造成了巨大的死亡。尽管RNA干扰(RNAi)在植物、线虫和昆虫中的抗病毒作用已经得到了很好的研究,但RNAi在昆虫中的抗病毒作用仍然存在争议,因为RNAi效应被怀疑在大多数细胞类型中受到干扰素(IFN)信号通路的抑制。为了确定RNAi在哺乳动物抵抗SARS-CoV-2中的作用,我们研究了宿主小RNA和SARS-CoV-2病毒衍生的小RNA(vsRNA)在Vero细胞(一种IFN缺陷细胞系)感染早期阶段的谱。我们发现宿主microRNA(miRNAs)在SARS-CoV-2感染后表达异常,导致发挥抗病毒功能的microRNA表达下调,促进病毒增殖的microRNA表达上调。此外,SARS冠状病毒2型vsRNA在负链22 nt处出现高峰,而在正链处没有出现高峰,并在两条链上形成连续的Dicer剪接模式。在感染辛德毕斯和寨卡病毒的IFN缺陷细胞系中观察到vsRNA的类似特征。总之,这些发现表明,宿主细胞可以部署RNAi途径来对抗IFN缺陷细胞中的SARS-CoV-2感染,为IFN缺陷的患者或组织开发替代抗病毒策略提供信息。
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused the global pandemic, resulting in great fatalities around the world. Although the antiviral roles of RNA interference (RNAi) have been well studied in plants, nematodes and insects, the antiviral roles of RNAi in mammalians are still debating as RNAi effect is suspected to be suppressed by interferon (IFN) signaling pathways in most cell types. To determine the role of RNAi in mammalian resistance to SARS-CoV-2, we studied the profiling of host small RNAs and SARS-CoV-2 virus-derived small RNAs (vsRNAs) in the early infection stages of Vero cells, an IFN-deficient cell line. We found that host microRNAs (miRNAs) were dysregulated upon SARS-CoV-2 infection, resulting in downregulation of microRNAs playing antiviral functions and upregulation of microRNAs facilitating viral proliferations. Moreover, vsRNA peaked at 22 nt at negative strand but not the positive strand of SARS-CoV-2 and formed successive Dicer-spliced pattern at both strands. Similar characteristics of vsRNAs were observed in IFN-deficient cell lines infected with Sindbis and Zika viruses. Together, these findings indicate that host cell may deploy RNAi pathway to combat SARS-CoV-2 infection in IFN-deficient cells, informing the alternative antiviral strategies to be developed for patients or tissues with IFN deficiency.
DOI: 10.1128/mbio.00698-13
发表时间: 2013-11-19
期刊: mBio
影响因子: 6.4
作者:
Girardi E;Chane-Woon-Ming B;Messmer M;Kaukinen P;Pfeffer S
通讯作者: Pfeffer S
DOI: 10.1093/nar/gkq1027
发表时间: 2011-01
影响因子: 14.9
作者:
Kozomara A;Griffiths-Jones S
通讯作者: Griffiths-Jones S
DOI: 10.1371/journal.ppat.1003018
发表时间: 2012-12
期刊: PLoS pathogens
影响因子: 6.7
作者:
Kincaid RP;Sullivan CS
通讯作者: Sullivan CS
DOI: 10.1016/s0140-6736(20)30183-5
发表时间: 2020-02-15
期刊: LANCET
影响因子: 168.9
作者:
Huang, Chaolin;Wang, Yeming;Cao, Bin
通讯作者: Cao, Bin
DOI: 10.1055/a-1159-1486
发表时间: 2020-06-01
影响因子: 0.7
作者:
Bornstein, Stefan R.;Gallwitz, Baptist;Seufert, Jochen
通讯作者: Seufert, Jochen