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Updated: Jan 11, 2026

New Tools to Expand Regulatory T Cells from HIV-1-infected Individuals
Published on: May 30, 2013
特定于HIV-1的CD8+ T细胞具有不同的能力来识别HIV-1暴露的HIV-1病毒阴性个体中的HIV-1感染细胞
Hung The Nguyen1, Takayuki Chikata1,2, Nozomi Kuse1
1Division of International Collaboration Research and Tokyo Joint Laboratory, Joint Research Center for Human Retrovirus Infection, Kumamoto University, 2-2-1 Honjo, Chuo-ku, Kumamoto 860-0811, Japan.
暴露于HIV的血清阴性男性显示出HIV-1特异性的CD8+T细胞反应. 这些细胞可以识别艾滋病毒感染的细胞,其中一些反应与感染个体的反应不同,表明感染前有不同的免疫特征.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 传染性疾病 传染性疾病
背景情况:
- 在HIV-1暴露的血清阴性 (HESN) 个体中存在HIV-1特异性的CD8+T细胞反应.
- 对HESN群体中这些T细胞的详细分析,特别是在高风险群体中,如与男性发生性关系的男性 (MSM),是有限的.
研究的目的:
- 调查和描述与男性发生性关系 (MSM) 的越南HESN男性的HIV-1特异性CD8+T细胞反应.
- 分析这些T细胞对HIV-1和受感染细胞的识别能力.
主要方法:
- 对370名越南HESN-MSM患者的281个重叠的HIV-1和特定的HLA-B*15:02受限表位体的T细胞反应的分析.
- 细胞内细胞因子染色 (ICS) 试验和HLA多分子试验被用于识别和表征CD8+T细胞.
- 评估了特定的CD8+ T细胞对HIV-1亚型AE感染细胞的识别.
主要成果:
- 在HESN-MSM的一小部分 (8/370) 中检测到HIV-1特定的CD8+T细胞反应.
- 在5个个体中发现了识别5个HIV-1表位的HLA受限CD8+T细胞.
- 特定于GagHL9和PolSV9的CD8+T细胞识别了HIV-1感染细胞,GagHL9和PolSV9在感染个体中很常见,而PolVF9特异性细胞没有识别感染细胞.
结论:
- 在HESN-MSM中发现了两种不同类型的HIV-1特异性CD8+T细胞:识别受感染细胞 (一些在感染个体中很常见) 和不识别受感染细胞.
- 这些发现表明,存在功能性HIV-1特异性CD8+T细胞,能够识别感染细胞,甚至在确立HIV-1感染之前.
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