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带有潜伏HIV-1的CD4+T细胞对T细胞受体刺激的增殖反应有所减少

Joshua T Kufera¹, Ciara Armstrong¹, Fengting Wu¹

¹Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.

The Journal of experimental medicine

|January 25, 2024

概括

人类免疫缺陷病毒1型 (HIV-1) 感染的CD4+T细胞在T细胞受体 (TCR) 刺激时增殖率降低,阻碍病毒储存库的持久性. 即使没有活跃的病毒产生,这种缺陷也表明,抗增殖策略可能会损害健康的T细胞.

科学领域:

免疫学免疫学免疫学
病毒学病毒学
细胞生物学细胞生物学

背景情况:

人类免疫缺陷病毒1型 (HIV-1) 在休息的CD4+T细胞中的持续潜伏储存是实现治愈的重大障碍,即使使用抗逆转录病毒疗法.
艾滋病毒-1感染细胞的抗原驱动的增殖对维护这种病毒储备有很大贡献.

研究的目的:

在T细胞受体 (TCR) 刺激后研究潜伏HIV-1的CD4+T细胞的增殖能力.
确定完整与缺陷的HIV-1前病毒对T细胞增殖的影响.

主要方法:

来自HIV-1感染者的CD4+T细胞的单细胞分析.
T细胞受体 (TCR) 刺激试验.
评估前病毒完整性,病毒生成和细胞增殖.

主要成果:

带有完整的HIV-1前病毒的CD4+T细胞在通过TCR刺激时表现出明显的增殖缺陷,与未感染的细胞或具有缺陷前病毒的细胞相比.
即使在没有检测到活跃维里昂生产的情况下,也观察到减少了增殖.
增殖缺陷的程度与体内T细胞克隆的大小相反相关.

结论:

潜伏的HIV-1感染会损害CD4+T细胞对TCR刺激的增殖反应,可能会导致储体持久性.
这些发现表明,抗增殖剂可能不是减少储备量的有效策略,并且可能不成比例地影响正常的T细胞功能.

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