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一个截断的HIV Tat显示出强大而特定的潜伏逆转活动

Ellen Van Gulck¹, Marion Pardons², Erik Nijs¹

¹Janssen Infectious Diseases, Janssen Research and Development, A Division of Janssen Pharmaceutica NV , Beerse, Belgium.

Antimicrobial agents and chemotherapy

|October 24, 2023

概括

科学家们通过使用Tat蛋白来探索逆转HIV-1潜伏期. 和mRNA重新激活了T细胞中的病毒ex vivo,通过向潜伏储存器来提供HIV-1治愈的潜在策略.

科学领域:

免疫学免疫学免疫学
病毒学病毒学
分子生物学分子生物学

背景情况:

治愈HIV-1的一个重要障碍是感染的CD4T细胞的持续潜伏储备,在停止联合抗逆转录病毒疗法 (cART) 时可以产生传染性病毒.
在这些潜伏细胞中重新激活HIV-1基因表达可能会通过细胞病变效应或免疫反应导致它们的消除.
目前的延迟逆转策略还没有成功地从cART治疗的个体中消除复制能力的HIV.

研究的目的:

研究HIV-1 Tat蛋白和mRNA作为逆转病毒延迟的药物的潜力.
为了测试假设,暴露最近感染的CD4+T细胞TAT可以有效地逆转延迟.

主要方法:

潜伏HIV-1感染的T细胞被用截断的Tat蛋白和TatmRNA进行了ex vivo治疗.
评估了HIV-1的重新激活,并与已知的延迟逆转剂,博12-米里沙特13-酸盐相比较.
进行了转录组分析,以评估T细胞激活和扰动.

主要成果:

截断的Tat蛋白和TatmRNA都表现出能够在潜伏感染的T细胞中重新激活HIV-1的能力.
达特获得的活性水平与博12-米里酸13-乙酸产生的活性水平相当.
重要的是,Tat诱导的激活发生在没有显著的T细胞激活或广泛的转录组扰乱的情况下.

结论:

艾滋病毒-1 Tat 蛋白和mRNA显示出作为新型潜伏逆转剂的前景.
泰特介导的重新激活为准潜伏的HIV-1储存器提供了潜在的治疗途径.
这种方法可能提供一种消除持久性HIV-1感染的方法,而不会诱导普遍免疫激活.

关键词:

艾滋病病毒艾滋病病毒艾滋病病毒这就是Tat Tat Tat.延迟时间延迟时间

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