在Gluconobacter oxydans中使用CRISPR/Cpf1-FOKI诱导的基因编辑
Xuyang Wang1, Dong Li2,3,1, Zhijie Qin2,3,1
1Key Laboratory of Industrial Biotechnology, Ministry of Education and School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu, 214122, China.
Synthetic and systems biotechnology
|April 1, 2024
概括
研究人员开发了一种新的CRISPR/Cpf1-FokI系统,用于高效地在Gluconobacter oxydans.中进行基因组编辑. 这一突破使精确的基因改造成为可能,克服了工业应用代谢工程的局限性.
科学领域:
- 微生物学 微生物学
- 分子生物学分子生物学
- 生物技术是生物技术.
背景情况:
- 葡萄糖菌氧化物是一种具有高效脱酶系统的阴性工业微生物,对生产维生素C和其他产品有价值.
- 其不完整的氧化系统具有工业应用,但也面临着缓慢生长和低生物质等挑战,需要代谢修改.
- G. oxydans是一种非模型菌株,缺乏高效的基因组编辑工具,阻碍了快速的多基因编辑和复杂的代谢调节.
研究的目的:
- 为Gluconobacter oxydans.开发高效的基因组编辑工具.
- 克服现有的CRISPR系统在G. oxydans.中的局限性.
- 为了实现精确的代谢工程,以改善工业应用.
主要方法:
- 构建基于CPF1或基于DCF1的CRISPR干扰 (CRISPRi) 系统来评估CPF1结合.
- 部署Cpf1-FokI来评估核酶活动.
- 开发和应用基于FokI核酶的CRISPR/Cpf1-FokI系统,用于基因组编辑.
主要成果:
- CRISPR/Cpf1系统可以准G. oxydans中的基因,但缺乏核酶活性.
- 开发的CRISPR/Cpf1-FokI系统实现了100%的单基因淘汰效率.
- 代双基因编辑成功进行,并确定了抗CRISPR蛋白AcrVA6.
结论:
- CRISPR/Cpf1-FokI系统为Gluconobacter oxydans提供了一个高效的基因组编辑工具.
- 这一进步促进了精确的基因改造,使更强大的代谢工程成为可能.
- 发现AcrVA6为G. oxydans.中的CRISPR-Cas系统提供了新的见解.
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