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Attacking Latent HIV with convertibleCAR-T Cells, a Highly Adaptable Killing Platform.
Cell ( IF 45.5 ) Pub Date : 2019-10-24 , DOI: 10.1016/j.cell.2019.10.002
Eytan Herzig 1 , Kaman Chan Kim 2 , Thomas A Packard 1 , Noam Vardi 3 , Roland Schwarzer 1 , Andrea Gramatica 1 , Steven G Deeks 4 , Steven R Williams 2 , Kyle Landgraf 2 , Nigel Killeen 2 , David W Martin 2 , Leor S Weinberger 5 , Warner C Greene 1
Affiliation  

Current approaches to reducing the latent HIV reservoir entail first reactivating virus-containing cells to become visible to the immune system. A critical second step is killing these cells to reduce reservoir size. Endogenous cytotoxic T-lymphocytes (CTLs) may not be adequate because of cellular exhaustion and the evolution of CTL-resistant viruses. We have designed a universal CAR-T cell platform based on CTLs engineered to bind a variety of broadly neutralizing anti-HIV antibodies. We show that this platform, convertibleCAR-T cells, effectively kills HIV-infected, but not uninfected, CD4 T cells from blood, tonsil, or spleen and only when armed with anti-HIV antibodies. convertibleCAR-T cells also kill within 48 h more than half of the inducible reservoir found in blood of HIV-infected individuals on antiretroviral therapy. The modularity of convertibleCAR-T cell system, which allows multiplexing with several anti-HIV antibodies yielding greater breadth and control, makes it a promising tool for attacking the latent HIV reservoir.

中文翻译:

使用可转换的 CAR-T 细胞攻击潜伏的 HIV,这是一种高度适应性的杀伤平台。

目前减少潜伏 HIV 宿主的方法需要首先重新激活含有病毒的细胞,使其对免疫系统可见。关键的第二步是杀死这些细胞以减少水库的大小。由于细胞衰竭和 CTL 抗性病毒的进化,内源性细胞毒性 T 淋巴细胞 (CTL) 可能不够用。我们设计了一个基于 CTL 的通用 CAR-T 细胞平台,该平台旨在结合多种广泛中和的抗 HIV 抗体。我们展示了这个平台,convertibleCAR-T 细胞,只有在配备抗 HIV 抗体的情况下,才能有效杀死血液、扁桃体或脾脏中感染 HIV 的 CD4 T 细胞,而不是未感染的 CD4 T 细胞。在接受抗逆转录病毒治疗的 HIV 感染者的血液中,可转换 CAR-T 细胞还能在 48 小时内杀死一半以上的可诱导储库。
更新日期:2019-11-09
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