当前位置: X-MOL 学术Immunity › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Cognate antigen engagement induces HIV-1 expression in latently infected CD4+ T cells from people on long-term antiretroviral therapy
Immunity ( IF 25.5 ) Pub Date : 2024-11-28 , DOI: 10.1016/j.immuni.2024.11.002
Milica Moskovljevic, Filippo Dragoni, Nathan L. Board, Fengting Wu, Jun Lai, Hao Zhang, James R. White, Rebecca Hoh, Kenneth Lynn, Pablo Tebas, Karam Mounzer, Steven G. Deeks, Luis J. Montaner, Janet D. Siliciano, Robert F. Siliciano, Francesco R. Simonetti

Despite antiretroviral therapy (ART), HIV-1 persists in latently infected CD4+ T cells, preventing a cure. Antigens drive the proliferation of infected cells, precluding latent reservoir decay. However, the relationship between antigen recognition and HIV-1 gene expression is poorly understood because most studies of latency reversal use agents that induce non-specific global T cell activation. Here, we isolated rare CD4+ T cells responding to cytomegalovirus (CMV) or HIV-1 Gag antigens from people living with HIV-1 on long-term ART and assessed T cell activation and HIV-1 RNA expression upon coculture with autologous dendritic cells (DCs) presenting cognate antigens. Presentation of cognate antigens ex vivo induced broad T cell activation (median 42-fold increase in CD154+CD69+ cells) and significantly increased HIV-1 transcription (median 4-fold), mostly through the induction of rare cells with higher viral expression. Thus, despite low proviral inducibility, antigen recognition can promote HIV-1 expression, potentially contributing to spontaneous reservoir activity and viral rebound upon ART interruption.

中文翻译:


同源抗原结合诱导长期抗逆转录病毒治疗者在潜伏感染的 CD4+ T 细胞中表达 HIV-1



尽管进行了抗逆转录病毒治疗 (ART),但 HIV-1 仍存在于潜伏感染的 CD4+ T 细胞中,无法治愈。抗原驱动感染细胞的增殖,排除潜伏的储液库衰变。然而,抗原识别和 HIV-1 基因表达之间的关系知之甚少,因为大多数关于潜伏期逆转的研究都使用诱导非特异性整体 T 细胞活化的药物。在这里,我们从长期接受 ART 治疗的 HIV-1 感染者中分离出对巨细胞病毒 (CMV) 或 HIV-1 Gag 抗原反应的稀有 CD4+ T 细胞,并评估了与呈递同源抗原的自体树突状细胞 (DC) 共培养后的 T 细胞活化和 HIV-1 RNA 表达。离 体同源抗原的呈递诱导了广泛的 T 细胞活化(CD154+CD69+ 细胞的中位增加 42 倍)和 HIV-1 转录显著增加(中位 4 倍),主要是通过诱导病毒表达较高的稀有细胞。因此,尽管前病毒诱导性低,但抗原识别可以促进 HIV-1 表达,从而可能导致 ART 中断后自发的储存库活性和病毒反弹。
更新日期:2024-11-28
down
wechat
bug