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通过CRISPR-Cas9实现的多重单核酸微生物基因组编辑使用5'-End-Truncated sgRNAs

Se Ra Lim¹, Ho Joung Lee¹, Hyun Ju Kim¹

¹Department of Systems Biotechnology and Institute of Microbiomics, Chung-Ang University, Anseong 17546, Republic of Korea.

ACS synthetic biology

|June 27, 2023

概括

这项研究引入了一种新型的截断单分子导向RNA (sgRNA) 方法,用于高精度的多重基因组编辑Escherichia coli. 这种方法可以同时对多个基因进行单核酸编辑,从而推进合成生物学应用.

科学领域:

分子生物学分子生物学
遗传学是一个遗传学.
合成生物学合成生物学

背景情况:

使用CRISPR-Cas9进行多重基因组编辑对效率有价值,但也面临准确性挑战.
同时编辑多个基因需要精确控制指导RNA功能.

研究的目的:

开发一种高精度的方法,用于对大肠杆菌 (Escherichia coli) 进行多重基因组编辑.
为了证明截断的单分子导向RNAs (sgRNAs) 对同时基因编辑的有效性.

主要方法:

使用5'-end截断单分子导向RNA (sgRNA) 策略进行CRISPR-Cas9介导的基因组编辑.
应用该方法在单核酸分辨率下同时编辑大肠杆菌中的两个和三个基因 (galK,xylB,srlD).
测试了对大肠杆菌中cI和ilvG基因的有针对性的编辑方法.

主要成果:

实现高效的,单核酸级同步编辑galK和xylB基因.
成功证明了三种基因 (galK,xylB和srlD) 的同时编辑,具有单核酸分辨率.
截断的sgRNAs在cI和ilvG基因的同时编辑中实现了30%的效率,与未截断的sgRNA不同.

结论:

截断的sgRNA方法显著提高了多重基因组编辑的准确性和效率.
这种技术可以在大肠杆菌中进行精确的基因改造,这对合成生物学有实际意义.
开发的方法显示了在创造工程生物中广泛应用的潜力.

关键词:

这就是CRISPR-Cas.一个多重复合并的多重复合并.一个核酸编辑.截断的sgRNARNA可以使用.

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