一个指向时钟的lncRNA诱导了对结核病的训练免疫力
Shanshan Yu1, Qiyao Chai2, Zhe Lu3
1Department of Bacteriology and Immunology, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing 101149, China; New Cornerstone Science Laboratory, Tsinghua University, Peking University Joint Center for Life Sciences, School of Basic Medical Sciences, Tsinghua University, Beijing 100084, China.
Cell host & microbe
|December 31, 2025
概括
研究人员发现了一种新型分子,结核耐药衍生时钟调节器1 (TRCR1),可诱导训练免疫. 这种分子增强了宿主对结核病的防御能力,并提高了疫苗的疗效.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 训练有素的免疫包括通过代谢和表观遗传变化的先天免疫记忆.
- 训练免疫的细胞间介质尚未完全理解.
- 结核病 (TB) 是全球卫生面临的一个重大挑战.
研究的目的:
- 确定结核病耐药性训练免疫的细胞间介质.
- 阐明这些媒介者建立表观遗传记忆的机制.
- 评估已识别的结核病宿主防御中介物的治疗潜力.
主要方法:
- 结核病耐药个体的等离子体外体分析.
- 一种新型长非编码RNA (lncRNA),TRCR1.1的识别和特征.
- 在单细胞中研究TRCR1与FXR2和CLOCK mRNA的相互作用.
- 对免疫基因促进体中CLOCK介导的基因素乙化进行分析.
- 使用结核病感染和BCG疫苗接种的小鼠模型的体内研究.
主要成果:
- 鉴定出TRCR1,一种外体衍生的lncRNA,是训练免疫的关键诱导因子.
- 通过FXR2,TRCR1稳定了CLOCK mRNA,增强了CLOCK表达和基因素乙化.
- 这种表观遗传重编程建立了抗菌活性和宿主防御.
- 结核菌菌 (Mtb) 蛋白MPT53诱导TRCR1从肺上皮细胞释放出来.
- 在小鼠中使用TRCR1增强了抗Mtb免疫力和BCG疫苗的疗效.
结论:
- 一个细胞间TRCR1-FXR2-CLOCK轴驱动在肺系统界面的训练免疫力.
- TRCR1代表了一种新的治疗点,用于增强宿主对传染病的防御能力.
- TRCR1有可能改进BCG疫苗接种策略.
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