高效的基因淘汰在瘤透的淋巴细胞通过腺基编辑
Morteza Hafezi1, Raphael Genolet1, Leila Hadadi1
1Ludwig Institute for Cancer Research, Department of Oncology, University of Lausanne and Lausanne University Hospital (CHUV), Lausanne, Switzerland.
Molecular therapy. Oncology
|December 15, 2025
概括
腺基编辑 (ABE) 通过敲除TIM3和TIGIT免疫检查点来精确地修改T细胞. 这增强了瘤透淋巴细胞 (TIL) 治疗的疗效,在临床前模型中改善了细胞扩张,功能和瘤控制.
科学领域:
- 免疫学 免疫学 免疫学
- 基因编辑 基因编辑
- 癌症治疗 癌症治疗
背景情况:
- 免疫检查点中断T细胞可以增强瘤透淋巴细胞 (TIL) 治疗.
- 由于双链DNA断裂,CRISPR-Cas9基因组编辑可能会导致染色体异常.
- 通过诱导单链DNA断裂,Cas9尼克酶 (nCas9) 和基编辑提供了更安全的替代方案.
研究的目的:
- 为工程TILs建立一个符合良好制造实践的腺基编辑 (ABE) 程序.
- 评估ABE的效率和安全性,用于TIL中的TIM3和TIGIT的单击和双击.
- 评估ABE介导基因编辑对TIL功能和抗瘤活性的影响.
主要方法:
- 开发了一个小规模的,符合GMP的腺基编辑 (ABE) 协议.
- 使用ABE在TIL中执行TIM3和TIGIT共抑制受体的单重和双重淘汰.
- 评估编辑效率,插入删除事件,TIL扩张,表型,细胞因子产生和杀死能力in vitro和in vivo.
主要成果:
- 使用ABE实现了TIM3和TIGIT的高淘汰效率,插入删除事件最小.
- ABE编辑改善了TIL扩展和功能,没有不良的表型变化.
- 编辑的TILs显示了增强的细胞因子产生,瘤细胞的连续杀死,瘤球状透和体内瘤控制.
结论:
- 腺基编辑是TIL多重编辑的可行和高效方法.
- ABE为CRISPR-Cas9提供了一个更安全的替代方案,用于为临床应用生成基因工程TIL.
- 由ABE设计的TIL显示出增强癌症免疫疗法疗效的前景.
关键词:
在ABE中,ABE是ABE.ACT ACT ACT 是一个字母.MT: 定期发行 定期发行在TIL TIL.基编辑 基编辑收养细胞转移的收养细胞转移癌症免疫疗法免疫疗法基因编辑 基因编辑瘤透的淋巴细胞更多相关视频
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