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特定的ECM降解增强了固体瘤中CAR-T细胞的抗瘤活性

Rui Zheng^1,2, Kuo Shen^3,4, Sixin Liang^1,2

¹State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, Shaanxi, China.

Cellular & molecular immunology

|October 30, 2024

概括

工程化仿真抗原受体 (CAR) -T细胞与合成的Notch受体降解瘤细胞外基质. 这增强了CAR-T细胞透和固体瘤清除,提供了一种新的癌症治疗策略.

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细胞疗法对血液恶性瘤有希望,但由于T细胞透和激活不良,对固体瘤的治疗是有限的.
固体瘤通常具有密集的细胞外基质 (ECM),阻碍CAR-T细胞的透和功能.

研究的目的:

设计能够克服固体瘤微环境所带来的物理和生物障碍的CAR-T细胞.
通过向瘤ECM来增强CAR-T细胞透,激活和抗瘤疗效,对抗固体瘤.

主要方法:

用合成Notch (synNotch) 受体设计了CAR-T细胞,以诱导局部分泌ECM降解酶.
该synNotch系统使瘤特异性酶的产生成为可能,促进了瘤部位的ECM降解.
synNotch CAR-T细胞的疗效在体外使用患者衍生瘤器官和体内模型进行了评估.

主要成果:

SynNotch CAR-T细胞有效降解瘤ECM组件,改善CAR-T细胞透到固体瘤中.
工程化CAR-T细胞表现出强大的瘤杀伤和显著的固体瘤回归,没有观察到体内毒性.
SynNotch CAR-T 细胞促进了 T 细胞在患者衍生瘤器官中的持续激活,表明持续性增强.

结论:

合成口受体工程提供了一种可行的策略,可以增强CAR-T细胞透和抗瘤活性,对抗富含ECM的固体瘤.
这种方法代表了对固体恶性瘤的CAR-T细胞疗法的有希望的进步,解决了当前治疗方法的关键局限性.

关键词:

在CAR-T细胞中.降解ECM的酶可以降解ECM.透的透方式这是一个synNotch受体.

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