Prestimulation of CD2 confers resistance to HIV-1 latent infection in blood resting CD4 T cells.

Prestimulation of CD2 confers resistance to HIV-1 latent infection in blood resting CD4 T cells.
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DOI:
10.1016/j.isci.2021.103305
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发表时间:
2021-11-19
期刊:
影响因子:
5.8
通讯作者:
Wu Y
Wu Y
中科院分区:
综合性期刊2区
文献类型:
--
作者:
He S;Guo J;Fu Y;Spear M;Qin C;Fu S;Cui Z;Jin W;Xu X;Chen W;Shang H;Wu Y

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HIV-1通过使用CD 4和CXCR 4或CCR 5受体感染血液CD 4 T细胞,其可以通过阻断病毒与CD 4/CXCR 4/CCR 5的结合或病毒-细胞融合来靶向。在这里,我们描述了一种新的机制,通过这种机制,HIV-1核进入也可以通过靶向非进入受体CD 2来阻断。分化簇2(CD 2)是在人血CD 4,特别是记忆性CD 4 T细胞上高度表达的粘附分子。我们发现,CD 2与其无细胞配体LFA-3或抗CD 2抗体的连接使血液静息CD 4 T细胞对HIV-1感染具有高度抗性。我们进一步证明,从机制上讲,CD 2结合启动竞争性信号传导,导致cofilin激活和局部肌动蛋白聚合周围的CD 2,这在空间上抑制HIV-1启动的局部肌动蛋白聚合所需的病毒核迁移。我们的研究确定了CD 2作为阻断HIV-1感染血液静息T细胞的新靶点。CD 2在人血CD 4 T细胞,特别是记忆性T细胞上高度表达CD 2的预刺激使静息T细胞对HIV感染具有高度抗性CD 2信号传导激活cofilin和肌动蛋白聚合阻断HIV核进入CD 2可作为抑制血液静息T细胞的HIV-1感染的新靶点免疫应答;免疫学;病毒学
HIV-1 infects blood CD4 T cells through the use of CD4 and CXCR4 or CCR5 receptors, which can be targeted through blocking viral binding to CD4/CXCR4/CCR5 or virus-cell fusion. Here we describe a novel mechanism by which HIV-1 nuclear entry can also be blocked through targeting a non-entry receptor, CD2. Cluster of differentiation 2 (CD2) is an adhesion molecule highly expressed on human blood CD4, particularly, memory CD4 T cells. We found that CD2 ligation with its cell-free ligand LFA-3 or anti-CD2 antibodies rendered blood resting CD4 T cells highly resistant to HIV-1 infection. We further demonstrate that mechanistically, CD2 binding initiates competitive signaling leading to cofilin activation and localized actin polymerization around CD2, which spatially inhibits HIV-1-initiated local actin polymerization needed for viral nuclear migration. Our study identifies CD2 as a novel target to block HIV-1 infection of blood resting T cells. CD2 is highly expressed on human blood CD4 T cells, particularly memory T cells Prestimulation of CD2 rendered resting T cells highly resistant to HIV infection CD2 signaling activates cofilin and actin polymerization blocking HIV nuclear entry CD2 may serve as a novel target to inhibit HIV-1 infection of blood resting T cells Immune response; Immunology; Virology
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