合理设计的Campylobacter jejuni Cas9 能够有效地激活基因和编辑基因
Yuxi Chen1, Rui Kang1, Yuanling Jiang1,2
1MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China.
Molecular therapy. Nucleic acids
|November 19, 2024
概括
研究人员设计了紧的CRISPR-Cas9系统 (CjCas9) 以改进基因组编辑. 通过腺相关病毒 (AAV) 传递的增强CjCas9显示出治疗应用的高效率和安全性.
科学领域:
- 分子生物学分子生物学
- 基因编辑技术的技术
- 生物技术是生物技术.
背景情况:
- 克里斯普尔-卡斯系统对于基因组工程至关重要.
- 腺相关病毒 (AAV) 是一个常见的传递载体.
- 紧的CjCas9为AAV交付提供了优势,但需要提高效率.
研究的目的:
- 为了提高CjCas9系统的编辑效率.
- 开发基于CRISPR的新型工具,用于基因调制和基因编辑.
- 评估工程 CjCas9 系统的体内疗效和安全性.
主要方法:
- CjCas9.9的结构指导蛋白质工程.
- 开发一个微型转录激活剂 (LDE-CjCas9-VPR).
- 基于CjCas9的基础编辑器 (LDE-CjABE,LDE-CjCBE) 的工程.
- 在人体和小鼠细胞中的体外编辑.
- 在生体内通过AAV介导的输送和在小鼠视网膜中的分析.
主要成果:
- 改进后的CjCas9变种显示了更高的编辑效率.
- 在人类和小鼠细胞中,LDE-CjABE成功诱导了基因组编辑.
- 在体内,LDE-CjABE的AAV交付提高了目标编辑效率.
- 在小鼠视网膜中没有检测到非目标编辑.
结论:
- 设计的LDE-CjCas9系统显著提高了编辑效率.
- 紧而高效的CjCas9工具扩展了治疗性基因组编辑应用.
- 通过AAV传递的LDE-CjCas9变种显示出安全有效的基因治疗的前景.
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