光/TNFSF14通过逆转免疫抑制瘤微环境促进CAR-T细胞贩运和细胞毒性
Na Zhang1, Xiaohong Liu2, Juliang Qin2
1Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology and School of Life Sciences, East China Normal University, Shanghai 200241, China; BRL Medicine, Inc, Shanghai 201109, China.
概括
瘤亡因子超级家族14 (LIGHT) 成员的表达增强了三级淋巴细胞结构 (TLS) 和免疫细胞透到瘤中. 轻工设计的CAR-T细胞显示出卓越的抗瘤疗效和固体瘤治疗的潜力.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 细胞疗法细胞疗法
背景情况:
- 瘤内的三级淋巴体结构 (TLS) 对于免疫细胞的积累和对免疫治疗的良好反应至关重要.
- 瘤亡因子超级家族14 (LIGHT) 成员的表达与TLS特征基因相关,表明其在免疫细胞透和患者预后方面的作用.
研究的目的:
- 研究LIGHT在增强抗瘤免疫反应方面的潜力,通过工程化基因抗原受体T (CAR-T) 细胞.
- 评估LIGHT表达CAR-T (LIGHT CAR-T) 细胞在改善瘤透,细胞毒性和整体抗瘤活性方面的疗效.
主要方法:
- 对来自癌症患者的RNA测序数据的分析,以将LIGHT表达与TLS签名基因相关联.
- 轻型CAR-T细胞的工程及其细胞毒性,细胞因子的产生和促进T细胞迁移的能力的评估.
- 使用免疫缺陷NSG小鼠和合成C57BL/6小鼠模型进行体内研究,以评估LIGHT CAR-T细胞的抗瘤疗效和瘤微环境调制.
主要成果:
- 在LIGHT表达和TLS特征基因之间观察到强烈的相关性,这表明LIGHT在免疫细胞积累中的作用.
- 轻型CAR-T细胞表现出增强的细胞毒性,细胞因子的产生,并通过CCL19和CCL21表达促进T细胞迁移.
- 在体内研究表明,与传统的CAR-T细胞相比,LIGHT CAR-T细胞具有优越的抗瘤功效,改善了瘤透,使瘤血管正常化,并强制使用LIGHT CAR-T细胞进行瘤内TLS.
结论:
- 光表达是一种可行的策略,通过重定向TLS来增强CAR-T细胞贩运和细胞毒性.
- 轻型CAR-T细胞显示出优化固体瘤免疫治疗的巨大潜力.
- 这种方法为扩大CAR-T疗法的临床应用提供了一个有希望的途径.
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