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BST-2/tetherin: a new component of the innate immune response to enveloped viruses

机译:BST-2 / tetherin:对包膜病毒的固有免疫反应的新组成部分

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摘要

The interferon-inducible, transmembrane protein BST-2 (CD317, tetherin) directly holds fully formed enveloped virus particles to the cells that produce them, inhibiting their spread. BST-2 inhibits members of the retrovirus, filovirus, arenavirus and herpesvirus families. These viruses encode a variety of proteins to degrade BST-2 and/or direct it away from its site of action at the cell surface. Viral antagonism has subjected BST-2 to positive selection, leading to species-specific differences that presented a barrier to the transmission of simian immunodeficiency viruses (SIVs) to humans. This barrier was crossed by HIV-1 when its Vpu protein acquired activity as a BST-2 antagonist. Here, we review this new host pathogen relationship and discuss its impact on the evolution of primate lentiviruses and the origins of the HIV pandemic.
机译:干扰素诱导的跨膜蛋白BST-2(CD317,系膜蛋白)直接将形成完整的包膜病毒颗粒固定在产生它们的细胞上,从而抑制了它们的扩散。 BST-2抑制逆转录病毒,丝状病毒,沙粒病毒和疱疹病毒家族的成员。这些病毒编码多种蛋白质来降解BST-2和/或将其从细胞表面的作用位点转移出去。病毒拮抗作用使BST-2处于阳性选择状态,导致物种特异性差异,这是猿猴免疫缺陷病毒(SIV)向人类传播的障碍。当其Vpu蛋白获得BST-2拮抗剂的活性时,HIV-1越过了这一障碍。在这里,我们审查了这种新的宿主病原体关系,并讨论了其对灵长类慢病毒进化和HIV大流行起源的影响。

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