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用CRISPR/甲甲酸盐整合的策略用于TCR-T细胞工程,减少14染色体损失

Jian Xu¹, Lianghua Shen¹, Ziyu Chen¹

¹Department of Hematology, Shanghai General Hospital, Shanghai JiaoTong University School of Medicine, Shanghai 200080, China.

Molecular therapy. Methods & clinical development

|December 11, 2025

概括

这项研究提出了一种新的非病毒方法,用于用于癌症治疗的T细胞工程 (TCR-T),通过减少与病毒载体和CRISPR基因编辑相关的遗传风险来提高安全性和效率.

科学领域:

免疫学免疫学免疫学
基因治疗基因治疗
在瘤学瘤学.

背景情况:

采用T细胞疗法,包括T细胞受体工程T (TCR-T) 细胞疗法,显示出治疗各种癌症的潜力.
目前的方法,如lentiviral载体带有插入性突变发生的风险,而基于CRISPR的方法面临效率和基因组稳定性的挑战.

研究的目的:

开发一种更安全,更有效的非病毒性策略,用于TCR-T细胞治疗.
克服现有的病毒和CRISPR介导基因编辑技术的局限性.

主要方法:

采用非病毒CRISPR-Cas9电穿孔方法,结合甲醇 (MTX) 代谢选择.
主要的人类T细胞通过同质导向修复 (HDR) 被设计为TCR集成到TRAC位点.
优化电孔和MTX处理实现了高纯度和减少染色体异常.

主要成果:

非病毒策略实现了~20%的初始TCR集成效率,使用MTX选择丰富到~70%的纯度.
丰富MTX显著降低了与CRISPR相关的14号染色体损失.
与lentiviral对应物相比,改造的TRAC-TCR-T细胞显示出增强的细胞因子分泌和减少的疲劳标记.

结论:

这个集成平台为TCR-T细胞治疗提供了比病毒载体更安全的替代方案.
这种方法减轻了有关CRISPR相关的基因组不稳定性的担忧.
这种符合GMP的方法有助于开发先进的采用性TCR-T免疫疗法.

关键词:

克里斯普尔是什么意思?克里斯普尔是什么意思?一个T细胞细胞.T细胞受体受体的 T 细胞受体.采用细胞疗法采用细胞疗法电穿孔的电穿孔是一种免疫疗法免疫疗法

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