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针对常规1型树突细胞的CAR-T细胞和CAR-Treg抑制实验性自身免疫脑膜炎
Cody D Moorman1, Sherman Yu1, Carlos G Briseno1
1Amgen Research, Amgen Inc., South San Francisco, CA, United States.
Frontiers in immunology
|November 15, 2023
概括
针对传统的1型树突细胞 (DC1) 与仿真抗原受体 (CAR) -T细胞或CAR-Tregs的向可以抑制自身免疫反应. 这种方法在实验性自身免疫性脑膜炎 (一种多发性硬化症模型) 中显示出适度的抑制作用.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞疗法细胞疗法
- 自免疫性疾病 自免疫性疾病
背景情况:
- 传统的1型树突细胞 (DC1) 通过介素-12.2促进致病性T辅助1型 (Th1) 细胞.
- 削弱DC1提供了减轻自身免疫反应的潜在策略.
研究的目的:
- 开发和评估X-C动机化学受体1 (XCR1) 特定的仿真抗原受体 (CAR) -T细胞和CAR-Tregs以准DC1.
- 在Th1-驱动的自身免疫模型中评估DC1枯竭和CAR-Treg介导免疫抑制的有效性.
主要方法:
- 产生XCR1特异性的CAR-T细胞 (CD4+和CD8+) 和CAR-Tregs.
- 使用RAG2-/-小鼠进行体内研究,以评估DC1枯竭和实验性自身免疫脑膜炎 (EAE) 模型的治疗疗效.
- 与XCR1-diphtheria毒素受体小鼠中甲状腺毒素介导的DC1枯竭的比较.
主要成果:
- 在体内,XCR1 CAR-T细胞有效准并耗尽DC1,导致DC2和pDC的补偿性增加.
- 通过XCR1 CAR-T细胞介导的DC1枯竭和XCR1 CAR-Treg疗法显示了适度抑制Th1驱动的EAE.
- 双菌毒素介导的DC1枯竭证实了DC1枯竭在EAE抑制中的作用.
结论:
- XCR1 CAR-T细胞和XCR1 CAR-Tregs代表了针对DC1.1的可行策略.
- 通过这些CAR-T细胞结构的DC1枯竭或免疫抑制可以适度地改善Th1-驱动的自身免疫疾病,如EAE.
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