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尽管耐久的抗逆转录病毒疗法,大脑微质细胞作为持续的艾滋病毒储存库
Yuyang Tang1,2, Antoine Chaillon3, Sara Gianella3
1University of North Carolina (UNC) HIV Cure Center, and.
The Journal of clinical investigation
|June 15, 2023
概括
经证实,大脑微质细胞 (MG) 含有复制能力强的人类免疫缺陷病毒 (HIV). 这一发现揭示了MG是大脑中持续存在的HIV储存库,可能在治疗停止后引发病毒反弹.
科学领域:
- 神经科学是一个神经科学.
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
背景情况:
- 微质 (MG) 被认为是一种潜在的人类免疫缺陷病毒 (HIV) 储存库.
- 停止抗逆转录病毒疗法 (ART) 后的反弹病毒病症表明存在持续的病毒源.
- 在大脑微质细胞内具有复制能力的HIV尚未被明确证明.
研究的目的:
- 为了调查大脑髓状细胞 (BrMCs),主要是微质细胞,是否携带复制能力强的HIV.
- 确定微质在持续性艾滋病毒感染和潜在的病毒反弹中的作用.
主要方法:
- 从非人类灵长类动物和接受ART的HIV阳性个体中分离BrMCs.
- 在微质中检测总和集成的SIV/HIV DNA和细胞相关的病毒RNA.
- 表观遗传抑制试验用于评估前病毒的敏感性.
- 从大脑微质细胞进行病毒外生测试,以确定复制能力.
- 脑源病毒的表型化用于热带性 (例如CD4表达).
主要成果:
- 证实BrMCs主要是微质细胞 (TMEM119+).
- 在微质中发现可检测的HIV DNA和低水平的病毒RNA.
- 微质中的Provirus对表观遗传抑制表现出敏感性.
- 具有复制能力,可诱导的HIV成功地从皮质皮质微细胞培养出来.
- 由大脑衍生的艾滋病毒表现出巨细胞的热带性和低遗传多样性,这表明迅速的殖民化.
结论:
- 大脑的微质细胞是复制能力强的HIV的持续储存库.
- 微质中的诱导性HIV可以导致病毒反弹.
- 与大脑相关的艾滋病毒表现出明显的特征,包括巨细胞热流.
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