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菌根ESAT-6通过GSDMD-NT依赖的线粒体功能障碍触发cGAS-STING通路

Yang Yang¹, Jinxia Xu², Yanping Hu¹

¹Key Laboratory of Applied Biotechnology on Animal Science & Veterinary Medicine of Zhejiang Province, Zhejiang Engineering Research Center for Veterinary Diagnostics & Advanced Technology, Zhejiang International Science and Technology Cooperation Base for Veterinary Medicine and Health Management, Belt and Road International Joint Laboratory for One Health and Food Safety, China-Australia Joint Laboratory for Animal Health Big Data Analytics, College of Veterinary Medicine of Zhejiang A&F University, Hangzhou, Zhejiang, China.

|October 15, 2025

概括

结核菌毒性因子ESAT-6触发线粒体损伤和DNA释放,通过GSDMD通路激活I型干扰素反应. 这揭示了结核病免疫规避的新机制.

科学领域:

免疫学免疫学免疫学
微生物学微生物学
细胞生物学细胞生物学

背景情况:

结核菌 (Mtb) 逃避了宿主免疫力.
Mtb感染可以诱导I型干扰素 (IFN) 的产生.
在感染期间,cGAS酶与MtbDNA结合.

研究的目的:

研究ESAT-6在Mtb诱导的I型IFN反应中的作用.
阐明参与ESAT-6介导免疫激活的信号通路.
了解mtb免疫逃避策略.了解mtb免疫逃避策略.

主要方法:

利用基因切除和药理上抑制cGAS和STING.
评估了线粒体功能障碍标志物,如mtDNA和mtROS释放.
检查了Gasdermin D (GSDMD) 在路径中的作用.

主要成果:

通过cGAS/STING轴,ESAT-6强烈诱导I型的IFN反应.
ESAT-6会导致线粒体功能障碍,释放mtDNA和mtROS.
ESAT-6触发了GSDMD裂变,导致线粒体损伤和IFN-β的产生.

结论:

一个新的ESAT-6-GSDMD-mtDNA轴驱动了Mtb感染中的I型IFN反应.
这一途径对于Mtb破坏宿主免疫力的能力至关重要.
针对这一轴可以提供新的治疗策略来对抗结核病.

关键词:

在ESAT-6上使用.GSDMDMD的总体发展目标是什么 Mtb Mtb 在线观看 cGAS/STING的使用情况.线粒体的损伤可能会损害线粒体.

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