微环境激活的CAR T细胞提高了固体瘤的疗效,没有毒性
Kristen C Vogt1,2,3, Pedro C Silberman1,2,4, Qianqian Lin1,2,5
1Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.
Science advances
|January 22, 2025
概括
工程T细胞 (MEAT细胞) 只有在遇到瘤新血管时,才能表达仿真抗原受体 (CARs). 这种有针对性的方法可以在固体瘤治疗中预防神经毒性,同时保持疗效.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 生物技术是生物技术.
背景情况:
- 化学抗原受体 (CAR) T细胞疗法在固体瘤治疗中面临挑战,因为它针对正常组织的共享抗原.
- 准GD2的CAR T细胞通过在正常脑组织上识别GD2引起致命的神经毒性.
研究的目的:
- 为改造 CAR T 细胞,提高对固体瘤的选择性,最大限度地减少非向性毒性.
- 开发一种由瘤微环境特定目标激活的有条件CAR表达系统.
主要方法:
- 设计了一种合成的Notch受体,用于有条件的CAR表达.
- 设计的T细胞 (MEAT细胞) 在与瘤新血管的标志物P-选择素结合时表达CARs.
- 在临床前模型中评估MEAT细胞的疗效和毒性.
主要成果:
- 肉细胞通过限制CAR表达和T细胞透到大脑中来预防神经毒性.
- 对固体瘤保持显著的抗瘤疗效.
- 证明了瘤透MEAT细胞的强化持久性和代谢适应性.
结论:
- 通过合成的Notch受体进行条件CAR表达,可以提高CAR T细胞在固体瘤中的安全性和有效性.
- 这种方法通过确保特定于癌细胞的向来扩大可向的固体瘤抗原的范围.
- 为开发更安全的CAR T细胞疗法用于各种固体恶性瘤提供了一个多功能平台.
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