药物控制的CAR-T细胞通过细胞相互作用的调节来控制细胞
Leo Scheller1,2, Greta Maria Paola Giordano Attianese3, Rocío Castellanos-Rueda4,5
1Laboratory of Protein Design and Immunoengineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
Nature chemical biology
|February 19, 2026
概括
新的药物监管关闭开关CAR T细胞疗法 (DROP-CARs) 通过控制小分子的T细胞活性来提高安全性和疗效,解决当前CAR T细胞治疗的局限性.
科学领域:
- 免疫治疗是一种免疫疗法.
- 合成生物学 合成生物学
- 分子工程分子工程分子工程
背景情况:
- 化学抗原受体 (CAR) T细胞疗法面临挑战,包括因持续暴露于抗原而导致的目标,非瘤毒性和T细胞耗尽.
- 现有的使用小分子开关的CAR设计受到适合的,非免疫原蛋白组件的可用性限制,这些组件对安全的,临床批准的药物有反应.
研究的目的:
- 开发新型药物监管的CAR T细胞系统 (DROP-CARs) 以提高安全性和治疗控制.
- 设计利用小分子调节T细胞活动和瘤向的CAR.
主要方法:
- 理性设计和基于图书馆的优化的人类蛋白质-蛋白质相互作用 (PPI),以创建venetoclax控制的"药物监管关闭开关PPI" (DROP) -CARs.
- 开发能够对不同的小分子和用于STAT3信号的逻辑门合成受体作出反应的双DROP-CAR.
- 在体外和体外对工程化CAR T细胞的功能评估.
主要成果:
- DROP-CARs使瘤向scFv的剂量依赖释放成为可能,减少T细胞与瘤细胞的结合.
- 双DROP-CAR和逻辑门合成受体的概念验证成功演示.
- 工程DROP-CAR T细胞在体外和体内表现出功能活性.
结论:
- DROP-CAR技术为提高CAR T细胞治疗的安全性和有效性提供了一个有希望的策略.
- 这种方法允许使用临床批准的小分子精确控制T细胞活性.
- 开发的系统有可能在未来的癌症免疫治疗中进行临床应用.
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