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Herpes simplex virus type I glycoprotein L evades host antiviral innate immunity by abrogating the nuclear translocation of phosphorylated NF-kappa B sub-unit p65

文献类型： 外文期刊

作者： Li, Zhaolong 1 ; Feng, Zhihua 2 ; Fang, Zhou 2 ; Chen, Jianghua 2 ; Chen, Wengzhi 2 ; Liang, Wangwang 2 ; Chen, Qi 2 ;

作者机构： 1.Fujian Acad Agr Sci, Inst Anim Husb & Vet Med, Fuzhou, Fujian, Peoples R China

2.Fujian Normal Univ, Coll Life Sci, Fujian Key Lab Innate Immune Biol, Qishan Campus, Fuzhou, Fujian, Peoples R China

关键词： HSV-1; GL; NF-kappa B; p65; evasion

期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：5.2； 五年影响因子：6.2 ）

ISSN：

年卷期： 2023 年 14 卷

页码：

收录情况： SCI

摘要： Nuclear factor (NF)-kappa B plays an important role in the innate immune response by inducing antiviral genes' expression. However, the herpes simplex virus 1 (HSV-1) virus has developed multiple ways to interfere with NF-kappa B activity to escape the host antiviral response. Here, we found that HSV-1 envelope glycoprotein L(gL) markedly inhibits interferon (IFN) production and its downstream antiviral genes. Our results showed that ectopic expression of gL inhibited IFN-beta promoter activation, and decreased IFN-beta production, the expression of IFN-stimulated genes (ISGs), and inhibited immunologic stimulant (poly I:C) induced activation of IFN signaling pathway. Depletion of gL by short interfering RNA (siRNA) significantly upregulated IFN-beta and ISG production. Further study showed that the N-terminus of the gL bound to the Rel homology domain (RHD) of the p65 and concealed the nuclear localization signal of p65, thereby impeding the translocation of phosphorylated p65 to the nucleus. In summary, our findings indicated that the N-terminal of HSV-1 gL contributes to immune invasion by inhibiting the nuclear translocation of p65.

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