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斯芬贡素-1-酸盐信号抑制抑制了Th1-Like Treg生成,通过逆转线粒体解

Rachel Coulombeau¹, Claudia Selck¹, Nicolas Giang¹

¹Department of Infectious Disease, Faculty of Medicine, Imperial College London, London, UK.

|October 24, 2024

概括

使用Fingolimod (FTY720) 抑制sphingosine-1-phosphate (S1P),防止功能障碍的T调节细胞 (Tregs) 的发展,并恢复它们的功能. 这种方法准了线粒体变化,这些变化对于Treg重编程在诸如多发性硬化症等自身免疫性疾病中至关重要.

科学领域:

免疫学免疫学免疫学
细胞生物学细胞生物学
神经免疫学神经免疫学

背景情况:

炎症条件促进表达IFNγ,T-bet和FOXP3的功能障碍T调节细胞 (Tregs) 的发展,这些细胞与多发性硬化症 (MS) 等自身免疫性疾病有关.
控制这些Th1-类Tregs生成的分子机制在很大程度上仍未知.
在Th1-likeTregs中,sphingosine-1-phosphate (S1P) 信号被上调,而在体内用Fingolimod (FTY720) 抑制S1P会影响MS患者的Treg可塑性.

研究的目的:

阐明S1P信号影响Th1-类Treg生成和功能的机制.
研究mTORC1信号传递和线粒体代谢在Treg重编程中的作用.
验证S1P抑制在缓解MS中功能障碍的Th1类Tregs的治疗潜力.

主要方法:

在体外研究评估FTY720对Th1-样Treg生成,抑制功能,mTORC1信号传递和线粒体脱的影响.
在FTY720治疗之前和之后,对MS患者体内生成的Th1-样Tregs进行分析.
流细胞计和代谢测试以评估Treg表型,功能和线粒体活动.

主要成果:

在体外,FTY720治疗抑制了Th1-like Tregs的生成,并恢复了它们的抑制功能.
在Treg重编程过程中,S1P抑制降低了mTORC1信号传递,并逆转了线粒体解.
在体内,接受FTY720治疗的多发性硬化症患者表现出降低了Th1-样Treg频率,增强了Treg抑制功能,并重新平衡了线粒体代谢.

结论:

线粒体脱是Treg重编程成功能障碍的Th1-类Treg的一个关键因素.
抑制S1P信号传递是一种有前途的治疗策略,可以抵消自身免疫性疾病中异常Tregs的发展.
准S1P信号可以恢复Treg功能和代谢平衡,为MS治疗提供一种新的方法.

关键词:

欧洲电子商务机构/MSMS 这就是Treg Treg.这是自身免疫力.

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