相关实验视频
Updated: May 9, 2025

06:33
Production of Human CRISPR-Engineered CAR-T Cells
Published on: March 15, 2021
12.6K
四倍氨基基基编辑的全基CAR T细胞的表现优于CRISPR/Cas9核酶工程T细胞
Nils W Engel1, Israel Steinfeld2, Daniel Ryan2
1Center for Cellular Immunotherapies, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104.
概括
腺基编辑器 (ABE) 在治疗T细胞的多重基因编辑方面表现出优于CRISPR/Cas9的优势. ABE提供了更高的产量,更好的功能和更好的安全性,从而在临床前模型中加强了瘤控制.
科学领域:
- * 免疫学和基因治疗
- * 分子生物学和基因组编辑
背景情况:
- * 全基因细胞疗法依靠基因组编辑进行临床开发.
- * 在T细胞制造中进行多重编辑的最佳基因编辑方法尚未确定.
研究的目的:
- * 为了比较CRISPR/Cas9核酶和腺基编辑器 (ABE) 在异性CAR T细胞生成中的多重基因编辑.
- * 评估编辑效率,制造产量,安全概况和功能结果在体外和体内.
主要方法:
- *CRISPR/Cas9和ABE在T细胞中编辑四个基因 (TRAC/CD3E,B2M,CIITA,PVR) 的比较.
- *体外功能测定,转录基因分析和转移酶可访问的染色体测序测试.
- * 在临床前白血病模型中的体内疗效评估.
主要成果:
- *ABE和Cas9都实现了高编辑效率;ABE产生了更高的制造产量,并且具有明显的,更安全的目标外配置 (没有转移).
- * ABE编辑的CAR T细胞在体外表现出优异的效应因子功能,增殖和CAR表达,DNA损伤反应激活减少.
- *与Cas9编辑细胞相比,ABE编辑的CAR T细胞在体内表现出更好的瘤控制和生存率.
结论:
- * 腺基编辑是一种优于CRISPR/Cas9核酶的方法,用于治疗T细胞制造中的多重基因编辑.
- *ABE在产量,安全性,功能增强和体内疗效方面具有优势,用于全源CAR T细胞疗法.
相关概念视频
CRISPR
48.5K
Genome editing technologies allow scientists to modify an organism’s DNA via the addition, removal, or rearrangement of genetic material at specific genomic locations. These types of techniques could potentially be used to cure genetic disorders such as hemophilia and sickle cell anemia. One popular and widely used DNA-editing research tool that could lead to safe and effective cures for genetic disorders is the CRISPR-Cas9 system. CRISPR-Cas9 stands for Clustered Regularly Interspaced...
48.5K
Homologous Recombination
49.7K
The basic reaction of homologous recombination (HR) involves two chromatids that contain DNA sequences sharing a significant stretch of identity. One of these sequences uses a strand from another as a template to synthesize DNA in an enzyme-catalyzed reaction. The final product is a novel amalgamation of the two substrates. To ensure an accurate recombination of sequences, HR is restricted to the S and G2 phases of the cell cycle. At these stages, the DNA has been replicated already and the...
49.7K

