集成的Tn-seq和MAGE辅助的快速基因组工程向大肠杆菌
Jaeseong Hwang1, Yong Hee Han2, Ina Bang3
1Advanced Convergence Research Division, World Institute of Kimchi, 86 Kimchi-ro, Nam-gu, Gwangju 61755, Republic of Korea; Department of Chemical Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-gu, Pohang, Gyeongbuk, Republic of Korea.
Trends in biotechnology
|November 7, 2025
概括
iTARGET通过有效识别新型遗传点,加速生物基化学品的生产. 这种综合方法结合了突变发生和选择,以发现协同作用的基因相互作用,以改善微生物菌株工程.
科学领域:
- 代谢工程是代谢工程.
- 合成生物学 合成生物学
- 微生物菌株改善的方法
背景情况:
- 生物化学生产的经济可行性依赖于高效的微生物菌株.
- 鉴定有效的基因工程目标是复杂的,因为复杂的代谢网络和基因相互作用.
研究的目的:
- 开发一种综合方法 (iTARGET) 来识别新的和协同作用的基因标.
- 通过理性设计克服预测遗传点的挑战.
- 通过改进微生物菌株来增强生物化学生产.
主要方法:
- iTARGET集成了现场转位子突变发生,生物传感器引导的选择和多重自动基因组工程 (MAGE).
- 第一个阶段:转子体突变和测序 (Tn-seq) 用于遗传多样性和目标识别.
- 第二阶段:MAGE用于组合淘汰 (KO) 库和高通量选协同相互作用.
主要成果:
- 应用于纳灵宁 (NRN) 生产,导致人口水平标位增加1.7倍.
- 确定了9个不可预测的遗传标,导致单个KO的标位增加了2.3倍.
- 组合性KO显示出协同效应,双KO突变显示出2.8倍的改善.
结论:
- iTARGET加速了对微生物菌株工程具有挑战性的遗传点的发现.
- 该方法使协同基因相互作用的高通量识别成为可能.
- iTARGET显著提高了生物化学品生产效率.
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