The influenza virus PB2 protein evades antiviral innate immunity by inhibiting JAK1/STAT signalling.
The influenza virus PB2 protein evades antiviral innate immunity by inhibiting JAK1/STAT signalling.
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流感病毒PB2蛋白通过抑制JAK1/STAT信号传导逃避抗病毒先天免疫
DOI:
10.1038/s41467-022-33909-2
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发表时间:
2022-10-21
影响因子:
16.6
通讯作者:
中科院分区:
文献类型:
--
作者:
Influenza A virus (IAV) polymerase protein PB2 has been shown to partially inhibit the host immune response by blocking the induction of interferons (IFNs). However, the IAV PB2 protein that regulates the downstream signaling pathway of IFNs is not well characterized. Here, we report that IAV PB2 protein reduces cellular sensitivity to IFNs, suppressing the activation of STAT1/STAT2 and ISGs. Furthermore, IAV PB2 protein targets mammalian JAK1 at lysine 859 and 860 for ubiquitination and degradation. Notably, the H5 subtype of highly pathogenic avian influenza virus with I283M/K526R mutations on PB2 increases the ability to degrade mammalian JAK1 and exhibits higher replicate efficiency in mammalian (but not avian) cells and mouse lung tissues, and causes greater mortality in infected mice. Altogether, these data describe a negative regulatory mechanism involving PB2-JAK1 and provide insights into an evasion strategy from host antiviral immunity employed by IAV. The PB2 subunit of the RNA polymerase of influenza virus antagonizes interferon signalling. Here, the authors biochemically characterise the molecular interactions that mediate this, and how this impacts viral replication in the context of different influenza subtypes.
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影响因子:
5.4
作者:
Chen DY;Khan N;Close BJ;Goel RK;Blum B;Tavares AH;Kenney D;Conway HL;Ewoldt JK;Chitalia VC;Crossland NA;Chen CS;Kotton DN;Baker SC;Fuchs SY;Connor JH;Douam F;Emili A;Saeed M
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Saeed M
影响因子:
16.6
作者:
Liu X;Xu F;Ren L;Zhao F;Huang Y;Wei L;Wang Y;Wang C;Fan Z;Mei S;Song J;Zhao Z;Cen S;Liang C;Wang J;Guo F
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Guo F
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5.4
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Hsiang, Tien-Ying;Zhao, Chen;Krug, Robert M.
通讯作者:
Krug, Robert M.
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8.8
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通讯作者:
Sanyal, Sumana
影响因子:
56.9
作者:
Chih, B;Engelman, H;Scheiffele, P
通讯作者:
Scheiffele, P