通过亲和调节的CAR-T细胞产生强有力的和持久的抗瘤免疫力,以向美索林为目标
Ya-Li Yue1,2, Jun-Jun Liu1,2, Hang Ma1,2
1School of Pharmacy, Shanghai Jiao Tong University, Shanghai, 200240, China.
Acta pharmacologica Sinica
|May 9, 2025
概括
优化亲和调整的仿真抗原受体 (CAR) - - 准美索林 (MSLN) 的T细胞改善了固体瘤治疗. 该LP12CAR-T变种显示出强大的疗效,长期持久性,并防止复发,没有毒性.
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细胞疗法在固体瘤中表现有前途,但在疗效和复发方面面临挑战.
- 梅索林 (MSLN) 是一种与瘤相关的抗原,在正常组织中表达受限,使其成为CAR-T治疗的可行标.
- 此前的工作涉及亲属抗体M912的亲属性成熟,以开发新的抗MSLN抗体.
研究的目的:
- 开发新的,高亲和度的人类抗体,准中素 (MSLN).
- 构建和评估使用这些抗体用于固体瘤治疗的第三代CAR-T细胞.
- 评估亲和调整的MSLN向的CAR-T细胞的体外和体内疗效,安全性和持久性.
主要方法:
- 菌体显示库的构建和亲和力成熟以识别抗MSLN抗体 (LP12,HP4-11,HP4-41/LP6,HP4-44/LP2).
- 产生晶状病毒载体以产生针对MSLN的第三代CAR-T细胞.
- 细胞分解活性,细胞因子产生和扩散的体外测定;在患有MSLN阳性扩散瘤的小鼠体内研究.
主要成果:
- 确定了四种具有增强亲和力的新型人类抗MSLN抗体.
- 生成的CAR-T变异体在体外表现出强大的细胞分解活性,细胞因子释放和对MSLN阳性瘤的扩散.
- 该LP12CAR-T变种在小鼠中表现出强大的扩散瘤根除,长期的体内持续性,复发预防,没有观察到瘤外毒性.
结论:
- 优化CAR抗原结合域亲和力是开发用于固体瘤的有效和安全的CAR-T细胞疗法的有希望的策略.
- 亲和调整的LP12 CAR-T细胞显示出治疗MSLN阳性固体瘤的巨大潜力.
- 这种方法提供了一个潜在的解决方案,以克服目前在固体恶性瘤中CAR-T细胞治疗的局限性.
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