工程造型的循环导向RNA增强了基于CRISPR/Cas12f的微型基因激活和腺基编辑
Xin Zhang1,2, Mengrao Li1, Kechen Chen1
1Cancer Research Institute, School of Basic Medical Sciences, State Key Laboratory of Multi-organ Injury Prevention and Treatment, Guangdong Province Key Laboratory of Immune Regulation and Immunotherapy, Southern Medical University, Guangzhou, China.
Nature communications
|March 28, 2025
概括
工程循环导向RNA (cgRNA) 显著提高了CRISPR Cas12f基因激活和腺因基编辑效率. 这种优化对推进基因治疗应用有前途.
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-Cas12f系统为基因编辑提供了一个紧而通用的平台.
- 目前的Cas12f活性对于许多治疗应用来说都是不理想的.
- 基因编辑工具的高效交付对于体外和体内应用至关重要.
研究的目的:
- 设计循环导向RNA (cgRNA),以提高CRISPR Cas12f系统的效率.
- 为了研究cgRNA和相分离对Cas12f活性的联合作用.
- 评估cgRNA对Cas12f介导的基因激活和腺基编辑的影响.
主要方法:
- 针对Cas12f系统的循环导向RNA (cgRNA) 的工程.
- Cas12f与cgRNA的同时表达和基因激活的评估.
- 将相分离系统与cgRNA-Cas12f集成,以增强基因激活.
- 在Cas12f介导的腺因基编辑中应用cgRNA.
- 在体内验证cgRNA增强的Cas12f活性在小鼠肝脏.
主要成果:
- 改造的cgRNA提高了Cas12f介导基因激活的1.9-19.2倍.
- 将cgRNA与相隔系统相结合,进一步提高了2.3-3.9倍的激活效率.
- cgRNA 提高了 1.2-2.5 倍的腺基编辑效率,并缩小了编辑窗口.
- 使用cgRNA策略,在小鼠肝脏中提升了Cas12f诱导的基因激活.
结论:
- 循环导向RNA (cgRNA) 有效地提高了Cas12f系统对基因激活的效率.
- cgRNA提高了Cas12f的基因激活和腺因基编辑能力.
- 这种cgRNA优化策略显示了基因治疗应用的巨大潜力.
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