The SARS-CoV-2 protein NSP2 enhances microRNA-mediated translational repression.
The SARS-CoV-2 protein NSP2 enhances microRNA-mediated translational repression.
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DOI:
10.1242/jcs.261286
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发表时间:
2023-10-01
影响因子:
4
通讯作者:
中科院分区:
文献类型:
--
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Viruses use microRNAs (miRNAs) to impair the host antiviral response and facilitate viral infection by expressing their own miRNAs or co-opting cellular miRNAs. miRNAs inhibit translation initiation of their target mRNAs by recruiting the GIGYF2–4EHP (or EIF4E2) translation repressor complex to the mRNA 5′-cap structure. We recently reported that the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-encoded non-structural protein 2 (NSP2) interacts with GIGYF2. This interaction is critical for blocking translation of the Ifnb1 mRNA that encodes the cytokine interferon β, and thereby impairs the host antiviral response. However, it is not known whether NSP2 also affects miRNA-mediated silencing. Here, we demonstrate the pervasive augmentation of miRNA-mediated translational repression of cellular mRNAs by NSP2. We show that NSP2 interacts with argonaute 2 (AGO2), the core component of the miRNA-induced silencing complex (miRISC), via GIGYF2 and enhances the translational repression mediated by natural miRNA-binding sites in the 3′ untranslated region of cellular mRNAs. Our data reveal an additional layer of the complex mechanism by which SARS-CoV-2 and likely other coronaviruses manipulate the host gene expression program by co-opting the host miRNA-mediated silencing machinery. Summary: SARS-CoV-2 non-structural protein 2 (NSP2) enhances the translational repression of host microRNA target mRNAs through interaction with GIGYF2 that forms a complex with the miRNA-induced silencing complex.
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影响因子:
3.5
作者:
Chow JT;Salmena L
通讯作者:
Salmena L
DOI:
10.1126/science.1215691
发表时间:
2012-04-13
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Djuranovic S;Nahvi A;Green R
通讯作者:
Green R
影响因子:
3.8
作者:
Bandara V;Michael MZ;Gleadle JM
通讯作者:
Gleadle JM
DOI:
10.1261/rna.054833.115
发表时间:
2016-03
期刊:
RNA (New York, N.Y.)
影响因子:
--
作者:
Fu R;Olsen MT;Webb K;Bennett EJ;Lykke-Andersen J
通讯作者:
Lykke-Andersen J
影响因子:
30.3
作者:
Katsafanas, George C.;Moss, Bernard
通讯作者:
Moss, Bernard