CD14++CD16-经典单细胞子集分泌IL-1ß和IL-10与"抗结核"表型相关
Shaikh Abdul Mubeen1, Deepak Vats1, Kapil Yadav2
1Dept. of Biochemistry All India Institute of Medical Sciences New Delhi India.
Human immunology
|January 24, 2025
概括
暴露于结核病但检测阴性的人,称为"结核病抵抗者",表现出明显的免疫反应. 表达IL-1β和IL-10的古典单细胞可能在早期感染清除中发挥作用,为结核病耐药性提供了洞察力.
科学领域:
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
- 微生物学 微生物学
背景情况:
- 结核菌菌 (M.tb) 感染导致活跃结核病 (TB) 或潜伏结核病感染 (LTBI).
- 结核病病例的家庭接触者具有高风险,但有些人仍然是TST/IGRA阴性 ("抗结核病患者").
- 了解"抗结核病"的免疫反应可能会揭示对M.tb.的保护相关性.
研究的目的:
- 与LTBI和健康对照相比,对"抗结核病患者"的单细胞子集和细胞内细胞因子表达的特征.
- 为了识别与M.tb感染耐药性相关的免疫标记物.
主要方法:
- 根据TST/IGRA,家庭接触者分为"LTBI"和"结核病抵抗者".
- 对外围血液单核细胞 (PBMC) 的流细胞计分析,以确定单细胞子集 (CD14/CD16).
- 在LPS刺激后进行细胞内细胞因子 (IL-10,IL-6,TNF-α,IL-1ß) 评估.
主要成果:
- 较高的经典单细胞 (CM) 频率与"结核病抵抗者"相关.
- 从"结核病抵抗者"的CM中增加IL-1β和IL-10表达,表明早期清除潜力.
- 在LTBI/PTB中增加TNF-α;与对照组和"抗结核病者"相比,在LTBI中增加IL-6.
结论:
- 表达IL-1β和IL-10的古典单细胞可能有助于抵抗M.tb感染.
- 独特的单细胞形状区分了"抗结核病患者"与LTBI和活跃结核病患者.
- 对"抗结核病"队列和IL-1ß/IL-10在早期清除中的作用进行进一步的研究是有必要的.
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