主体NK细胞的转录和蛋白质签名在结核病感染状态之间划分了不同的免疫状态
Han Zhang1, Liguo Liu1, Jie Hu1
1National Health Commission (NHC) Key Laboratory of Systems Biology of Pathogens, State Key Laboratory of Respiratory Health and Multimorbidity, National Institute of Pathogen Biology, and Center for Tuberculosis Research, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
Frontiers in immunology
|July 1, 2025
概括
自然杀手 (NK) 细胞在整个结核病 (TB) 谱中表现出改变的功能. 这项研究确定了活跃结核病 (ATB) 和潜伏结核病感染 (LTBI) 的独特NK细胞通路和生物标志物,有助于结核病的诊断和理解.
科学领域:
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
- 基因组学和蛋白质组学
背景情况:
- 自然杀手 (NK) 细胞对于对抗Mycobacterium结核病 (M.tb) 感染至关重要.
- 关于整个结核病 (TB) 疾病谱的NK细胞免疫特征的研究有限.
- 了解NK细胞动态对于开发有效的结核病诊断和治疗方法至关重要.
研究的目的:
- 综合描述整个结核病谱的NK细胞 (活性结核病,潜伏性结核病感染,健康对照).
- 在不同结核病感染阶段识别NK细胞的分子特征和功能途径.
- 发现潜在的生物标志物,以区分结核病感染状态.
主要方法:
- 多组学方法包括转录组学,蛋白质组学和RT-qPCR在165名参与者的CD56+NK细胞上.
- 独立队列 (85名参与者) 的分析,使用流细胞计进行验证.
- 参与者的分层分为活跃结核病 (ATB),潜伏结核病感染 (LTBI) 和健康对照 (HC) 组.
主要成果:
- 在LTBI和ATB组中,NK细胞介导的细胞毒性和亡途径得到了丰富.
- 与化学反应相关的途径特别富含ATB,表明免疫细胞迁移.
- 针对LTBI和ATB,鉴定出了不同的基因表达模式和NK细胞子集 (CD56dim/bright),以及经过验证的生物标志物组合,以区分感染阶段.
结论:
- 包括细胞毒性和迁移在内的NK细胞功能在整个结核病谱中发生显著变化.
- 已确定的基因表达模式和生物标志物组合为结核病感染的临床分期提供了潜力.
- 研究结果提供了有关结核病发病和宿主防御中的NK细胞介导的免疫机制的见解.
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