一个基于单个等离子体的,易于治愈的CRISPR/Cas9系统用于Pseudomonas putida KT244040中的快速代基因组编辑
Qifeng Wen1,2, JinJin Chen3, Jin Li3
1State Key Laboratory of Petroleum Molecular & Process Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China.
Microbial cell factories
|December 29, 2024
概括
我们开发了一种快速的CRISPR-Cas9系统,用于在Pseudomonas putida (P. putida) 中高效的基因组编辑,加速了用于瓦伦生物合成等应用的菌株工程.
科学领域:
- 合成生物学 合成生物学
- 微生物生物技术 微生物生物技术
- 基因组工程是基因组工程.
背景情况:
- Pseudomonas putida KT2440 是一种强壮的土壤细菌,用于合成生物学和工业过程.
- 现有的P. putida基因组编辑工具往往耗时且复杂,阻碍了快速代修改.
- 克里斯普尔/卡斯系统提供精确的基因组编辑,但需要优化P. putida的速度和效率.
研究的目的:
- 开发一个快速的,全合一的CRISPR/Cas9系统,用于有效编辑P. putida KT2440的基因组.
- 为了简化代基因组编辑过程以加速菌株工程.
- 为了改造P. putida进行增强的瓦伦生物合成.
主要方法:
- 开发了P. putida的全集CRISPR/Cas9等离子体系统,可在30°C时轻松固化等离子体.
- 优化编辑效率,通过调整同源性臂长和基因删除的目标部位来优化编辑效率.
- 在多个研究人员中验证了系统可用性,用于各种遗传修改 (删除,替换,插入).
主要成果:
- 使用单回处理和简单的等离子体固化,实现了快速的序列基因删除 (例如,vdh,vanAB).
- 证明了高的用户友好性和效率,成功验证了9次删除,3次替换和2次插入.
- 通过代基因组编辑来进行瓦伦生物合成的工程P. putida,从而提高了产量10倍.
结论:
- 开发的全集CRISPR/Cas9等离子体系统显著加速了P. putida的基因组编辑,编辑在1.5天内完成.
- 这代表了迄今为止P. putida报告的最快的代基因组编辑系统.
- 该系统在设计P. putida用于瓦伦生产的有效性突出了其对各种生物技术应用的潜力.
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