在Komagataella phaffii中通过CRISPR进行高效的C-to-T基编辑
Ling-Yu Wu1, Yan Xu1, Xiao-Wei Yu1
1Lab of Brewing Microbiology and Applied Enzymology, School of Biotechnology and Key Laboratory of Industrial Biotechnology of Ministry of Education, Jiangnan University, Wuxi, China.
Biotechnology journal
|July 10, 2024
概括
研究人员开发了一个新的CRISPR-nCas9基编辑工具,用于Komagataella phaffii. 这种工具使得有效的C-to-T基编辑成为可能,在这个重要的酵母物种中推进了基因工程.
科学领域:
- 生物技术是生物技术.
- 合成生物学 合成生物学
- 微生物工程 微生物工程
背景情况:
- 科马加泰拉法菲 (Komagataella phaffii) 是一种用于生产工业酶,制药和化学品的甲基酵母.
- 先进的基因组编辑工具对于开发K. phaffii成为更复杂的细胞工厂至关重要.
研究的目的:
- 开发一个强大的和多功能基础编辑方法 Komagataella phaffii.
- 设计和优化基于CRISPR-nCas9的基础编辑器,以在K. phaffii.中进行高效的C-to-T基础编辑.
主要方法:
- 设计了24个基编辑器结构,使用各种促进剂和细胞二脱氨酶 (CDA).
- 为K. phaffii.优化了一个基础编辑器 (PAOX2*-KpA3A-nCas9-KpUGI-DAS1TT)
- 测试了带有修改的nCas9变体 (nSpG,nSpRy) 的基准编辑器,以扩大可向的基因组区域.
主要成果:
- 最优的基础编辑器实现了高C-to-T编辑效率:96.0%单位编辑,65.0%双位编辑和5.0%三位编辑.
- 编辑发生在一个特定的窗口 (C-18到C-12).
- 修改后的nCas9变体能够在NGN和NRN原空间器相邻基因 (PAM) 位点进行编辑,效率在20.0%到93.2%之间.
结论:
- 为K. phaffii开发了强大的基础编辑工具.
- 这些工具有助于基因功能研究,代谢工程和K. phaffii. 的基因改进.
- 扩展的准能力增强了对这种酵母的功能基因组学研究.
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