泰林抑制了复原病毒的释放,并被HIV-1 Vpu对抗
Stuart J D Neil1, Trinity Zang, Paul D Bieniasz
1Aaron Diamond AIDS Research Center and Laboratory of Retrovirology, The Rockefeller University, 455 First Avenue, New York, New York 10016, USA.
Nature
|January 18, 2008
概括
人类细胞有一个称为tetherins的抗病毒防御,可以捕获病毒颗粒. 研究人员确定CD317是一种tetherin,对于抑制逆转录病毒释放至关重要,也是艾滋病毒/艾滋病治疗的目标.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 人类细胞拥有内在的抗病毒机制,可以限制复原病毒和包裹病毒颗粒的释放.
- 这种抗病毒活性是由蛋白质结合物,称为tetherins,它保留病毒在受感染的细胞表面的介导.
- 艾滋病毒-1辅助蛋白Vpu对抗这种以铁为媒介的抗病毒活性.
研究的目的:
- 为了确定细胞tetherin的分子性质.
- 为了阐明CD317,Vpu和逆转录病毒粒子释放之间的功能关系.
- 探索针对HIV/AIDS的Vpu-tetherin相互作用的治疗潜力.
主要方法:
- 使用演约束和基因表达分析来识别tetherin.
- CD317表达水平与病毒释放的Vpu依赖性相关.
- 进行了CD317和Vpu同定位研究的消耗.
主要成果:
- 鉴定出CD317是一种tetherin,一种以前功能不明的膜蛋白.
- CD317表达与HIV-1和小鼠白血病病毒释放中的Vpu相关并诱导了对Vpu的需求.
- CD317的耗尽取消了HIV-1释放的Vpu要求,证明了CD317在病毒保留中的作用.
- CD317调解了细胞表面和内细胞区内的病毒留,这种效应被Vpu.抑制.
结论:
- CD317作为一种素,限制包裹病毒的释放.
- Vpu通过破坏病毒保留来对抗CD317的抗病毒活性.
- 针对Vpu功能来调动tetherin的抗病毒活性,为HIV/AIDS提供了一个潜在的治疗策略.
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