通过多功能CD19-CAR T细胞进行增强的瘤免疫疗法,这些细胞被设计成分泌抗CD47单链可变片段
Yingqi Qiu1, Peiyun Liao1, Hao Wang1
1Department of Hematology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, 510280, P. R. China.
International journal of biological sciences
|October 2, 2023
概括
工程化仿真抗原受体T (CAR T) 细胞分泌抗CD47抗体片段,克服非霍奇金淋巴瘤 (NHL) 中的免疫抑制瘤微环境. 这种方法提高了CAR T细胞的疗效,减少了复发,提供了更安全的免疫治疗策略.
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:
- 在仿真抗原受体T (CAR T) 细胞治疗后,非霍奇金淋巴瘤 (NHL) 的复发率很高.
- 免疫抑制性瘤微环境 (TME) 是限制CAR T细胞疗效和导致NHL复发的关键因素.
- CD47是一种治疗点,影响巨细胞功能和免疫逃逸.
研究的目的:
- 设计CAR T细胞以分泌抗CD47单链可变片段 (scFv),以提高NHL的抗瘤疗效.
- 评估工程CAR T细胞对T细胞分化,巨细胞化和极化的影响.
- 为了比较工程化CAR T细胞与传统CAR T细胞加上CD47抗体治疗的疗效和安全性.
主要方法:
- 工程CD19-CAR T细胞共同表达一个抗CD47 scFv.
- 在体外和体内验证工程CAR T细胞功能的验证,包括抗瘤功效,T细胞反应和巨细胞调节.
- 对工程CAR T细胞抗原后刺激的细胞因子产生,脱粒化和多功能性的评估.
主要成果:
- 改造的CAR T细胞显示出增强的抗瘤疗效,与组合疗法相比或优于组合疗法.
- 分泌的抗CD47 scFv调节了巨细胞细胞和极化.
- 改造的CAR T细胞表现出改善的多功能免疫反应,包括增强的脱粒和细胞因子生产.
- 通过CAR T细胞局部输送抗CD47可能会降低系统性毒性.
结论:
- 编造的分泌抗CD47 scFv的CAR T细胞是克服NHL中TME介导抗性的有希望的策略.
- 这种方法通过增强抗瘤免疫力和减少复发,为NHL的CAR T细胞治疗提供了更有效和潜在的安全方法.
- 这项研究提供了一个新的CAR T细胞工程平台,用于改进癌症免疫治疗.
关键词:
CD47 CD47 CD47 CD47 CD47 CD47 CD47 CD47 CD47 CD47 CD47 CD47化学抗原受体T细胞的T细胞.非霍奇金淋巴瘤是一种非霍奇金淋巴瘤.T细胞多功能性的T细胞多功能性巨细胞是一个巨细胞.更多相关视频
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