具有终端分化的效应体特征的Granzyme B + CD8 + T细胞决定了多发性硬化症的进展
Ziyan Shi1, Xiaofei Wang1, Jiancheng Wang1
1Department of Neurology, West China Hospital, Sichuan University, No.28 Dianxin Nan Street, Chengdu, 610041, China.
Journal of neuroinflammation
|June 2, 2023
概括
外围CD8+ T细胞,特别是GzmB+ CD8+ TEMRA细胞,与多发性硬化症 (MS) 的进展有关. 高GzmB+ CD8+ TEMRA细胞可以区分二级渐进性MS (SPMS) 和复发性复发性MS (RRMS).
科学领域:
- 免疫学 免疫学 免疫学
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
背景情况:
- 多发性硬化症 (MS) 涉及到由自身免疫反应驱动的中枢神经系统脱髓化和神经退行.
- 复发性复发性多发性硬化症 (RRMS) 在80%以上的患者中往往进展为二级渐进性多发性硬化症 (SPMS),其特征是逐渐的神经衰退.
- 目前,没有确定的治疗方法可以防止RRMS转变为SPMS.
研究的目的:
- 研究外围CD8+ T细胞在RRMS转化为SPMS中的作用.
- 确定潜在的诊断生物标志物,以区分SPMS和RRMS.
主要方法:
- 单细胞RNA测序和流细胞计分析了SPMS和RRMS患者的CD8+T细胞异质性和动态.
- 测序T细胞受体测序确定了MS中的克隆扩张.
- 使用Tbx21 siRNA证实了T-bet在GzmB表达中的作用;统计模型评估了生物标志物潜力.
主要成果:
- 在SPMS患者中,原始CD8+T细胞减少,激活CD8+T细胞子集增加.
- 在SPMS中异常放大的CD8+T细胞显示出终端效应器 (EMRA) 现型,具有GzmB表达和明显的克隆扩张.
- 在CD8+ T细胞中的GzmB表达与MS残疾和进展正相关,准确地区分SPMS和RRMS.
结论:
- 外围GzmB+ CD8+ TEMRA细胞参与了MS的进展.
- 这些细胞作为一种潜在的诊断生物标志物,用于区分SPMS和RRMS.
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