由mTOR调节的线粒体新陈代谢限制了菌根诱导的细胞毒性
Antonio J Pagán1, Lauren J Lee2, Joy Edwards-Hicks3
1Molecular Immunity Unit, Cambridge Institute of Therapeutic Immunology and Infectious Diseases, Department of Medicine, University of Cambridge, Cambridge CB2 0AW, UK; MRC Laboratory of Molecular Biology, Cambridge CB2 0QH, UK; Department of Microbiology, University of Washington, Seattle, WA 98195, USA.
Cell
|September 14, 2022
概括
结核耐药性涉及巨细胞的代谢. 通过促进能量代谢,防止ESAT-6等真菌毒素对巨细胞造成损害,从而保护mTOR激酶通路.
科学领域:
- 免疫学
- 代谢过程
- 结核病研究
背景情况:
- 颗粒瘤中的巨死是结核病原体的关键.
- 主体易感性随着巨细胞的死亡而增加.
研究的目的:
- 确定结核病的宿主耐药性因素.
- 调查代谢在感染期间巨细胞存活中的作用.
主要方法:
- 斑马鱼向前进行基因查以识别宿主因素.
- 对mTOR激酶及其复合体1 (mTORC1) 的分析
- 评估线粒体能量代谢和糖解.
主要成果:
- mTOR激酶被确定为早期宿主耐药性因素.
- mTORC1 保护巨细胞免受 * Mycobacterium * 诱导的死亡.
- 代谢适应,包括糖分解,防止ESAT-6的线粒体损伤.
结论:
- 宿主代谢调节对于对抗* Mycobacterium tuberculosis* 早期的毒性至关重要.
- 代谢支持可以让适应性免疫形成.
- 解释了为什么结核菌并不总是致命的.
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