一种基于CRISPR的哺乳动物基因组编辑的工程化baculoviral蛋白和DNA联合传递系统
Julien Capin1, Alexandra Harrison1, Renata A Raele1
1School of Biochemistry, University of Bristol, 1 Tankard's Close, Bristol BS8 1TD, UK.
Nucleic acids research
|February 27, 2024
概括
百科病毒载体有效地将CRISPR-Cas9蛋白和DNA传递给人体细胞,从而实现精确的基因组编辑. 这种新型的蛋白质-细菌传递系统 (spBV) 为基因编辑应用提供了更高的安全性和效率.
科学领域:
- 分子生物学分子生物学
- 基因编辑技术的技术
- 病毒载体系统 病毒载体系统
背景情况:
- 克里斯普尔-Cas9基因编辑功能强大,但面临着对真核细胞的传递挑战.
- 持续的Cas9表达可以增加非目标突变,需要替代的传递方法.
- 基于蛋白质的CRISPR组件的输送可以减轻非目标效应.
研究的目的:
- 开发一种基于baculovirus的系统,将CRISPR-Cas9蛋白质和DNA传递给人类细胞.
- 提高CRISPR基因组编辑的效率和安全性.
- 为了实现多重基因编辑和向DNA集成.
主要方法:
- 利用带蛋白质的百科病毒 (pBV) 传递Cas9和基编辑蛋白.
- 实施了一种可化学诱导的异构化系统,用于选择性地将蛋白质加载到spBV中.
- 采用spBVs用于有针对性的集成,同时提供Cas9蛋白和模板DNA.
主要成果:
- 通过pBV输送在人体细胞中证明了高效的基因组和基因编辑.
- 使用spBVs实现了高效的多重基因组编辑.
- 使用spBVs展示了高达5%的1.8kBDNA有效载荷的特定站点集成.
- 使用spBVs确认了高编辑效率,没有可检测的非目标事件.
结论:
- 载有蛋白质的细菌病毒 (spBVs) 是CRISPR应用的多功能和高效平台.
- spBVs为基因编辑提供了一个潜在的更安全的替代方案,需要同时输送DNA和蛋白质.
- 该系统促进了先进的基因组工程,包括多重编辑和精确的DNA集成.
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