基于CRISPR/Cas9的工具包用于快速标记物回收和在Komagataella phaffii中的组合图书馆
Wei Zhou1, Yuanyi Li1, Guosong Liu1
1State Key Laboratory of Bioreactor Engineering, New World Institute of Biotechnology, East China University of Science and Technology, 130 Meilong Road, P.O.B.311, Shanghai, 200237, China.
Applied microbiology and biotechnology
|February 7, 2024
概括
这项研究增强了科马加泰拉 (Komagataella phaffii) 酵母中的CRISPR基因编辑. 新的方法使有效的多基因集成,大片段删除和代谢工程的快速库建设成为可能.
科学领域:
- 合成生物学 合成生物学
- 分子生物学分子生物学
- 生物技术是生物技术.
背景情况:
- 由于其独特的生物特性,Komagataella phaffii是工业应用的有价值的酵母.
- 与Saccharomyces cerevisiae等模型生物相比,K. phaffii中现有的CRISPR基因编辑工具具有局限性.
研究的目的:
- 改进基于CRISPR的基因编辑效率和Komagataella phaffii的多功能性.
- 开发用于快速标记物回收,多基因集成和大片段操纵的新方法.
- 为优化代谢途径构建一个酵母组合图书馆.
主要方法:
- 用光蛋白重新设计的gRNA等离子体,以改善等离子体结构和标记物回收.
- 淘汰Ku70和DNA结合酶IV,以促进多个DNA片段的单位集成.
- 同时引入两个双链断裂 (DSB) 以实现精确的大片断绝.
- 构建一个酵母组合图书馆,使用烯作为代谢途径优化的记者.
主要成果:
- 一个重新设计的gRNA等离子体使得方便可靠的标记物回收成为可能.
- 成功将26.5千克的DNA片段 (11个表达盒) 整合到单个位点中,成功率为57%.
- 精确淘汰27千克的DNA片段,阳性率为50%.
- 构建一个酵母组合图书馆,并确定一种最佳的代谢途径组合,产生182.73mg/L的烯.
结论:
- 开发的方法显著提高了K. phaffii.的基因编辑能力.
- 这些进步促进了高效的代谢工程和酵母库的构建,以开发菌株.
- 这项研究为利用K. phaffii在合成生物学应用中提供了一个强大的工具包.
关键词:
这就是CRISPR/Cas9的作用.科玛格塔贝拉 (Komagataella phaffii) 是一个有趣的植物.大型DNA片段的淘汰赛.多片段集成多片段集成视觉标记物的回收利用酵母组装了图书馆的酵母.更多相关视频
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