在实验性自身免疫脑膜炎期间,TCR介导的MAIT细胞激活的保护作用
Mark Walkenhorst1, Jana K Sonner1, Nina Meurs1
1Institute of Neuroimmunology and Multiple Sclerosis, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Nature communications
|October 29, 2024
概括
粘膜相关的不变T细胞 (MAIT) 在中枢神经系统炎症中起着保护作用,就像多发性硬化症 (MS) 中一样. 它们通过T细胞受体 (TCR) 信号的激活可以改善疾病的严重程度,这表明它们具有治疗潜力.
科学领域:
- 免疫学 免疫学 免疫学
- 神经科学是一个神经科学.
- 这是一种自身免疫力.
背景情况:
- 多发性硬化症 (MS) 的发病包括由免疫细胞驱动的神经炎症,但粘膜关联不变T细胞 (MAIT) 的具体作用尚不清楚.
- MAIT细胞识别了MR1分子所呈现的微生物抗原.
研究的目的:
- 调查MAIT细胞在多发性硬化症自免疫脑筋炎 (EAE) 实验小鼠模型中的作用.
- 确定MAIT细胞激活的机制及其在中枢神经系统炎症中的功能后果.
主要方法:
- 使用EAE小鼠模型研究中枢神经系统 (CNS) 中MAIT细胞透和表型.
- 采用转录组分析和记者小鼠 (Nur77GFP) 来评估MAIT细胞激活.
- 使用抗MR1抗体和相关抗原进行操纵的T细胞受体 (TCR) 激活.
主要成果:
- 在EAE期间,MAIT细胞,特别是MAIT17和MAIT1/17子集,在炎症的中枢神经系统中积聚.
- 中枢神经系统的MAIT细胞通过细胞因子和TCR信号都被激活.
- 阻断TCR激活加剧了EAE,而抗原特异性激活改善了EAE,与安菲瑞古林 (AREG) 诱导相关.
结论:
- 由TCR介导的MAIT细胞激活在中枢神经系统炎症中具有保护作用,正如EAE模型所示.
- MAIT细胞激活可以通过包括安菲瑞古林 (AREG) 诱导在内的机制产生保护作用.
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