首都医科大学学报 ›› 2011, Vol. 32 ›› Issue (2): 186-189.

• 艾滋病基础与流行病学研究 • 上一篇    下一篇

HIV感染者调节性T细胞消耗可导致HIV特异CD8+细胞凋亡

焦艳梅1,福军亮2,张政2,计云霞1,王蕊1,张彤1,陈德喜1,吴昊1*   

  1. 1. 首都医科大学附属北京佑安医院感染中心; 2. 解放军302医院生物中心
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-04-21 发布日期:2011-04-21
  • 通讯作者: 吴昊

Treg Cells Depletion Can Lead to HIVspecific CD8+Cells Apoptosis in HIV Patients

JIAO Yan-mei1, FU Jun-liang2, ZHANG Zheng2, JI Yun-xia1, WANG Rui1, ZHANG Tong1, CHEN De-xi1, WU Hao1*   

  1. 1. Department of Infectious Diseases, Beijing Youan Hospital, Capital Medical University;2. Biological Centre, 302 Hospital of Chinese People’s Liberation Army
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-04-21 Published:2011-04-21
  • Contact: WU Hao

摘要: 目的 了解在HIV感染患者CD4+CD25+FoxP3+调节性T细胞(Treg)的降低是否能够引起HIV特异CD8+细胞过度凋亡。
方法 本研究对75例没有治疗的HIV患者进行研究,检测其外周血中Treg细胞计数及CD8+细胞的活化及凋亡情况并分析其相关性;同时纯化Treg细胞及CD8+细胞,在体外进行共培养,用五聚体检测HIV特异CD8+细胞的活化情况。
结果 在HIV感染患者,Treg细胞与CD8+细胞的活化及凋亡呈负相关,Treg细胞能够抑制HIV特异的CD8+细胞的凋亡。
结论 HIV感染患者Treg细胞的降低可导致CD8+细胞、尤其HIV特异CD8+细胞的凋亡增加。

关键词: 调节性T细胞, 人类免疫缺陷病毒, 特异的CD8+细胞

Abstract: Objective To investigate whether the decrease of CD4+CD25+FoxP3+ cells(Treg) can lead to HIV-specific CD8+ cells apoptosis in HIV patients.
Methods We characterized Tregs among 75 antiviral-naive HIV-1-infected individuals in this study. Treg and CD8+ cell activation and apoptosis were detected and its relevance was analyzed; Treg cells and CD8+ cells were simultaneously purified and then co-cultured in vitro, and HIV-specific CD8+ cell apoptosis was detected with pentamer and annexin V.
Results Absolute counts of circulating Treg was inversely correlated with up-regulated activation and apoptosis of CD8+ T cells. In addition, Tregs were found to suppress HIV peptite-induced apoptosis of HIV-specific CD8+ T cells. ConclusionThese findings indicate that the decrease in Tregs closely correlate with increased apoptosis of CD8+ T cells, especially with HIV specific CD8+ T cells.

Key words: regulatory T cells, human immunodeficiency virus, specific CD8+ cell

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