CCR4+记忆Tregs和PD-1+T细胞作为活性结核病的新型免疫诊断生物标志物
Qiang Zhang1,2, Yifan Zhang1, Zhenpeng Guo1
1Department of Epidemiology, Key Laboratory of Public Health Safety and Emergency Prevention and Control Technology of Higher Education Institutions in Jiangsu Province, Center for Global Health, School of Public Health, Nanjing Medical University, 101 Longmian Ave, Nanjing, 211166, China.
结核病 (TB) 感染改变T细胞子集,具有特定的T细胞类型,如CCR4+记忆Tregs,CD4+PD-1+T细胞和CD8+PD-1+T细胞,具有预测活性TB (ATB) 的潜力. 这些发现为ATB诊断提供了新的生物标志物.
科学领域:
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
- 生物标志物发现发现
背景情况:
- 由Mycobacterium tuberculosis引起的结核病 (TB) 是一个重大的全球卫生挑战.
- 通过T细胞介导的免疫对于控制结核病感染至关重要.
- 了解T细胞亚群动态可能会揭示活跃结核病 (ATB) 的生物标志物.
研究的目的:
- 为了研究ATB患者和健康对照者之间的T细胞子集的免疫表型差异.
- 确定与结核病感染相关的T细胞子集及其预测ATB的潜力.
- 分析轻度与严重ATB的T细胞亚群差异.
主要方法:
- 招募了140名ATB患者和140名健康对照 (HC).
- 分析了对T细胞子集免疫类型的外周血液单核细胞 (PBMC).
- 使用单变量,多变量和倾向得分匹配分析.
主要成果:
- 与HC相比,ATB患者的CD3 +,CD4 +中央记忆 (CM) 和CD8 +效应T细胞的频率发生变化.
- 编程细胞死亡蛋白1 (PD-1) 的表达下调,而人类白细胞抗原-DR (HLA-DR) 在T细胞上调.
- CCR4+记忆调节T细胞 (Tregs),CD8+PD-1+T细胞和CD4+PD-1+T细胞与结核病感染有关,并预测了ATB;严重的ATB病例具有更多的CD8+HLA-DR+和较少的CD4+效应T细胞.
结论:
- T细胞子集的分化和功能与结核病感染有关.
- CCR4+记忆Tregs,CD4+PD-1+T细胞和CD8+PD-1+T细胞显示出ATB的预测价值.
- 这些T细胞子集可以作为ATB诊断和预后的新生物标志物.
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