Stimulation of HIV-1-specific cytolytic T lymphocytes facilitates elimination of latent viral reservoir after virus reactivation.

Stimulation of HIV-1-specific cytolytic T lymphocytes facilitates elimination of latent viral reservoir after virus reactivation.
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DOI:
10.1016/j.immuni.2012.01.014
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发表时间:
2012-03-23
期刊:
影响因子:
32.4
通讯作者:
Siliciano RF
Siliciano RF
中科院分区:
医学1区
文献类型:
--
作者:
Shan L;Deng K;Shroff NS;Durand CM;Rabi SA;Yang HC;Zhang H;Margolick JB;Blankson JN;Siliciano RF

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高活性抗逆转录病毒疗法(HAART)抑制HIV-1复制,但不能消除病毒,因为HIV-1建立潜伏感染。中断高效抗逆转录病毒治疗可导致病毒血症迅速反弹。因此需要终身治疗。清除潜伏库的努力集中在重新激活潜伏前病毒而不诱导全局t细胞激活。然而,在病毒再激活后杀死受感染细胞,这是消除储存库所必需的,尚未得到评估。本研究表明,在体外模型中逆转潜伏期后,受感染的静息CD4+ T细胞在病毒细胞病变作用下存活,即使来自大多数HAART患者的自体溶细胞T淋巴细胞(CTL)存在。抗原特异性刺激患者ctl导致感染细胞的有效杀伤。这些结果表明,在重新激活潜伏的HIV-1之前刺激HIV-1特异性ctl可能对成功根除工作至关重要,应该在未来的临床试验中加以考虑。
Highly active antiretroviral therapy (HAART) suppresses HIV-1 replication but cannot eliminate the virus because HIV-1 establishes latent infection. Interruption of HAART leads to a rapid rebound of viremia. Life-long treatment is therefore required. Efforts to purge the latent reservoir have focused on reactivating latent proviruses without inducing global T-cell activation. However, the killing of the infected cells after virus reactivation, which is essential for elimination of the reservoir, has not been assessed. Here we show that after reversal of latency in an in vitro model, infected resting CD4+ T cells survived despite viral cytopathic effects, even in the presence of autologous cytolytic T-lymphocytes (CTL) from most patients on HAART. Antigen-specific stimulation of patient CTLs led to efficient killing of infected cells. These results demonstrate that stimulating HIV-1-specific CTLs prior to reactivating latent HIV-1 may be essential for successful eradication efforts and should be considered in future clinical trials.
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