益生菌胰岛素通过调节肠道微生物群和短链脂肪酸来控制Th17细胞介导的中枢神经系统自身免疫力
Ning Li1,2,3, Xinyan Han1, Ming Ruan2,3
1The MOE Key Laboratory for Standardization of Chinese Medicines and the MOE Innovation Centre for Basic Medicine Research on Qi-Blood TCM Theories, Shanghai Key Laboratory of Compound Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
Gut microbes
|September 17, 2024
概括
益生菌胰岛素通过调节肠道细菌和减少炎症Th17细胞,降低了小鼠多发性硬化症 (MS) 的严重程度. 这表明胰岛素是MS患者潜在的治疗药物.
科学领域:
- 神经免疫学 神经免疫学
- 微生物组研究的研究.
- 自身免疫性疾病是一种自身免疫性疾病.
背景情况:
- 多发性硬化症 (MS) 是一种中枢神经系统自身免疫性疾病,导致脱髓化.
- 像胰岛素这样的益生菌调节肠道微生物群,但它们对中枢神经系统自身免疫力的作用尚不清楚.
- 实验性自身免疫脑膜炎 (EAE) 是MS的相关小鼠模型.
研究的目的:
- 在MS (EAE) 的小鼠模型中研究胰岛素的治疗潜力.
- 阐明胰岛素对中枢神经系统自身免疫的影响背后的机制,重点关注肠道微生物群和免疫反应.
主要方法:
- 在EAE小鼠中,口服注射胰岛素.
- 评估临床EAE得分,中枢神经系统组织学 (脱线,炎症),免疫细胞概况 (Th17) 和细胞因子水平 (IL-17,IL-6,TNF-α).
- 肠道微生物组合的分析,便/血清代谢物 (黄油酸),淋巴细胞增殖试验,便微生物移植和抗生素治疗实验.
主要成果:
- 胰岛素治疗显著改善了EAE的严重程度,减少了中枢神经系统的炎症和脱髓化.
- 胰岛素降低了Th17细胞群和促炎性细胞因子,同时抑制了MOG35-55特异性淋巴细胞增殖.
- 胰岛素改变了肠道微生物群,增加了有益细菌和黄油酸水平,从而调解了治疗效果,正如FMT和抗生素研究所证实的那样.
结论:
- 胰岛素通过调节肠道微生物群和代谢物来对EAE产生治疗作用,从而减少了Th17介导的炎症.
- 这些发现突出了MS病变的肠-大脑轴,并支持胰岛素作为多发性硬化症的潜在治疗策略.
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