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理性的蛋白质工程来增强MHC-独立的T细胞受体

Ju-Fang Chang^1,2, Jack H Landmann^1,2, Tien-Ching Chang^1,2

¹Division of Oncology, Section of Cellular Therapy, Washington University School of Medicine, St. Louis, Missouri.

Cancer discovery

|July 9, 2024

概括

工程T细胞疗法显示出希望,但在长期有效性方面扎. 新的结构增强的MHC独立T细胞受体 (miTCR) 改善T细胞的功能和持久性,为更好的免疫疗法提供了框架.

科学领域:

免疫学免疫学免疫学
合成生物学合成生物学
蛋白质工程是指蛋白质工程.

背景情况:

基于化学抗原受体 (CAR) 的疗法是合成细胞免疫疗法,长期有效性有限.
失调的CAR T细胞激活导致T细胞功能障碍和治疗失败.

研究的目的:

设计和开发新的MHC独立T细胞受体 (miTCRs),克服当前CAR T细胞疗法的局限性.
提高工程T细胞响应的精度和耐用性,以增强癌症免疫疗法.

主要方法:

通过将抗体变量域与T细胞受体常数链连接而设计的miTCRs.
利用预测建模和代序列修改来优化混合受体结构.
在多种瘤模型中评估了miTCRT细胞功能和持久性,包括用41BB辅助刺激进行体内白血病控制.

主要成果:

确定了标准合成受体设计中的生物化学冲突,并开发了结构增强的miTCRs.
结构增强的miTCRs在各种瘤模型中显著改善受体驱动的T细胞功能.
与CAR T细胞相比,41BB辅助刺激延长了miTCR T细胞持久性和增强了白血病控制.

结论:

合成受体结构对于调节T细胞功能和治疗疗效至关重要.
基于结构的miTCR设计为设计更耐用和更有效的T细胞免疫疗法提供了框架.
改进的miTCR提供了一个有希望的策略,以提高工程T细胞疗法的耐用性和有效性.

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