在感染期间,T细胞单细胞复合体表现出明显的免疫特征
Ningxin Kang1, Ashu Chawla2, Hannah Hillman1
1Center for Vaccine Innovation, La Jolla Institute for Immunology, La Jolla, CA 92037, USA.
iScience
|September 24, 2025
概括
活跃结核病 (TB) 和登革热中的免疫细胞复合体与单细胞相比显示出独特的基因活性. 这项研究揭示了有关感染期间细胞与细胞相互作用和免疫反应的见解.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 传染性疾病 传染性疾病
背景情况:
- 通过直接接触的免疫细胞通信对于免疫反应至关重要.
- 在分子水平上了解细胞与细胞的相互作用对于破译感染期间的免疫动态至关重要.
研究的目的:
- 开发一种高通量方法来分析复合体内的单细胞的转录组和适应性免疫受体谱.
- 在活跃结核病 (TB) 和登革热感染的背景下,研究形成复合体的免疫细胞和不形成复合体的免疫细胞之间的转录组差异.
- 探索细胞间RNA获取在感染期间细胞间相互作用中的作用.
主要方法:
- 开发了一种创新的高通量工作流程,用于对免疫细胞复合体的单细胞分析.
- 利用转录和自适应性免疫受体谱系测序.
- 对复合细胞与单个细胞的基因表达特征和免疫细胞特征进行比较.
主要成果:
- 与单细胞相比,活跃结核病和登革热中的免疫细胞复合体表现出明显的转录基因特征,免疫激活和MHC-II复合体基因表达增加.
- 在结核病患者中,复合体内的T细胞显示出更高比例的细胞毒性T细胞,增加了T细胞受体 (TCR) 克隆性,并在诊断时和治疗后增加了免疫活性.
- 在复合体中观察到"双表达"细胞 (共表达T细胞和单细胞基因) 的显著丰富,这表明细胞间RNA转移.
结论:
- 在单细胞分辨率下研究免疫细胞综合体,为感染期间血液中的细胞-细胞相互作用提供了新的见解.
- 这些发现强调了细胞与细胞接触在塑造免疫反应和基因表达模式方面的重要性.
- 细胞间RNA的获取可能在传染病期间起到调节免疫细胞功能的作用.
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