通过系统的介质优化和代谢工程,增强了Pseudomonas putida中的脂蛋白产量
Ai-Ping Pang1, Teng Zhang1, Kun Yang1
1National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou 310014, PR China; Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China.
Bioresource technology
|February 11, 2026
概括
这项研究对Pseudomonas putida进行了改造,以提高脂蛋白的产量. 介质优化和代谢工程显著增加了拉姆诺脂类产量,为工业生物制造铺平了道路.
科学领域:
- 生物技术是生物技术.
- 微生物工程 微生物工程
- 生物活性剂生产 生产生物活性剂生产
背景情况:
- 拉姆诺脂是有价值的生物表面活性剂,具有多种工业用途.
- 由于产量低,成本高,目前的生产方法面临挑战.
- Pseudomonas putida 是生物表面活性剂合成的一个有希望的宿主.
研究的目的:
- 为了增强 *P. putida* KT2440.的拉姆诺脂类产量.
- 为了优化培养基成分以提高拉姆诺脂类产量.
- 应用代谢工程策略,以提高前体供应,用于拉姆诺脂类合成.
主要方法:
- 用响应表面方法来优化混合碳和来源的介质.
- 进行了转录分析,以了解代谢途径的流动.
- 代谢工程涉及过度表达关键基因在拉姆诺斯和脂肪酸合成途径.
主要成果:
- 中等优化增加了rhamnolipid标位306.7% (从1.5到6.1μg/L).
- 在5L生物反应器中,工程菌株 (accAD-fabD-R) 在5L生物反应器中达到40.2μg/L.
- 在工程 *P. putida* 中实现了创纪录的高脂生产水平.
结论:
- 介质优化和代谢工程的结合方法对高效的脂蛋白生产是有效的.
- 增强前体供应对于克服脂合成瓶至关重要.
- *P. putida*显示出工业规模的脂生物制造的巨大潜力.
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