化学抗原受体诱导的抗原损失可以保护CD5.CART细胞免受兄弟杀伤,而不会影响目标细胞毒性
Royce Ma1, Mae Woods2, Phillip Burkhardt3
1Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston, TX 77030, USA; Graduate Program in Immunology and Microbiology, Baylor College of Medicine, Houston, TX 77030, USA; William T. Shearer Center for Human Immunobiology, Texas Children's Hospital, Houston, TX 77030, USA; Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX 77030, USA.
针对CD5的化学抗原受体T (CART) 细胞通过降低抗原的调节来防止自我损伤. 这一策略使得有效的T细胞癌症治疗,同时节省健康的T细胞.
科学领域:
- 免疫治疗是一种免疫疗法.
- 细胞疗法细胞疗法
- 在瘤学瘤学.
背景情况:
- 化学抗原受体T (CART) 细胞可以导致T细胞兄弟杀伤.
- 工程 CART 细胞是必要的,以防止自我损伤.
研究的目的:
- 为了研究CART细胞对CD5抗原的调制.
- 评估CD5向CART细胞在T细胞恶性瘤中的有效性.
主要方法:
- 设计了针对CD5抗原的CART细胞.
- 在CART细胞暴露时对T细胞进行评估CD5内部化.
- 在临床前模型和患者样本中评估了CART细胞活性.
主要成果:
- 向CD5的CART细胞诱导了CD5的快速内化和损失,防止了兄弟杀戮.
- 目标细胞显示了短暂的CD5屏蔽细胞毒性.
- 持续的CD5-CART细胞活动导致CD5+T细胞消去,节省了CD5-T细胞.
结论:
- 在CART细胞中持续的向抗原下调赋予了兄弟杀伤性抗性.
- 向CD5的CART细胞表现出有效的点细胞毒性,而不会影响安全.
- 这种方法为治疗T细胞恶性瘤提供了一个有希望的策略.
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