骨髓造血导致多发性硬化症的进展
Kaibin Shi1, Handong Li2, Ting Chang3
1Department of Neurology, Institute of Neuroimmunology, Tianjin Medical University General Hospital, Tianjin 300052, China; Center for Neurological Diseases, China National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, China.
Cell
|June 16, 2022
概括
在多发性硬化症 (MS) 中,骨髓干细胞转向髓状细胞的产生,增加进入中枢神经系统 (CNS) 的炎症细胞. 针对骨髓可能为MS提供新的治疗方法.
科学领域:
- 免疫学
- 神经科学
- 血液学
背景情况:
- 多发性硬化 (MS) 是一种影响中枢神经系统 (CNS) 的T细胞介导的自身免疫性疾病.
- 骨髓造血干细胞和前代细胞 (HSPC) 在MS病变发生过程中的作用尚不清楚.
- 已知HSPCs对免疫激活有反应.
研究的目的:
- 研究多发性硬化症患者自身反应性T细胞和骨髓HSPC之间的相互作用.
- 探索导致MS患者骨髓异常形成的机制.
- 确定向骨髓是否会影响MS中枢神经系统的炎症.
主要方法:
- 在多发性硬化患者中分析HSPC血统倾斜和T细胞扩张.
- 在实验性自身免疫脑膜炎 (EAE) 中的谱系追踪,MS的小鼠模型.
- 在骨髓中研究细胞迁移途径 (例如CXCR4) 和信号轴 (例如CCL5-CCR5).
主要成果:
- 多发性硬化症患者的骨髓HSPC显示骨髓血统偏差与克隆T细胞扩张.
- EAE小鼠表现出骨髓骨质形成的增加,产生质细胞和透到中枢神经系统的Ly6Chigh单细胞.
- 骨髓反应性T细胞通过CXCR4迁移到骨髓,CCL5-CCR5轴驱动骨髓形成,加剧中枢神经系统的炎症和脱髓化.
结论:
- 由T细胞相互作用驱动的异常骨髓形成,有助于MS中枢神经系统病理.
- 骨髓在MS的发病过程中起着至关重要的作用.
- 针对骨髓微环境为MS和其他自身免疫性疾病提供了潜在的治疗策略.
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