开发一个Yarrowia lipolytica平台,用于转化含有曼尼托尔的废物流
Angela R Gordillo Sierra1, Sangdo Yook1, Sarah Coleman1
1McKetta Department of Chemical Engineering, The University of Texas at Austin, 200 E Dean Keeton St., Austin, TX 78712 USA.
Bioresource technology
|August 20, 2025
概括
为了吸收曼尼托尔而进化的Yarrowia lipolytica菌株显著改善了生长和脂质生产. 这些工程酵母有效地将废物流 (如橄厂废水) 转化为有价值的生物化学物质.
科学领域:
- 生物技术是生物技术.
- 微生物工程 微生物工程
- 工业微生物学 工业微生物学
背景情况:
- 雅罗维亚脂质菌是一种有前途的生物转化酵母,但与曼尼托尔同化作斗争.
- 曼尼托是橄厂废水 (OMWW) 中的主要碳来源,是一种具有挑战性的基板.
研究的目的:
- 为了增强Y. lipolytica吸收曼尼托尔的能力.
- 用工程菌株改善OMWW的脂质生产.
主要方法:
- 适应性实验室进化 (ALE) 在曼尼托尔除外条件下.
- 整合性遗传 (全基因组测序) 和转录组分析.
- 在OMWW衍生媒介中进行培养.
主要成果:
- 在曼尼托尔同化和生长方面达到22倍的增长.
- 发现了一种关键突变 (STA1 A403T),增强了生长.
- 观察到的代谢转变有利于能量调动而不是脂质储存.
- 在OMWW中,进化菌株产生的脂质增加了2倍,COD降低了90%.
结论:
- ALE成功地增强了Y. lipolytica的曼尼托尔同化和脂质生产.
- 通过ALE的代谢工程为废物利用提供了一条途径.
- 进化的菌株显示出从OMWW中可持续生物化学生产的潜力.
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