工程运输器增强维生素A的生产,提供ATP和前体
Yijun Zhang1,2, Qiongyue Hu2, Hongwei Yu1,2
1Key Laboratory of Biomass Chemical Engineering (Education Ministry), College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310058, China.
Biodesign research
|December 19, 2025
概括
这项研究通过工程酵母增强了维生素A (复原蛋白) 的产量. 过度表达特定的PDR蛋白质并优化能量供应显著提高了视网分泌和产量,达到视网和视网的创纪录水平.
科学领域:
- 合成生物学 合成生物学
- 代谢工程是代谢工程.
- 生物技术是生物技术.
背景情况:
- 维生素A (视网类药物) 对人类健康至关重要,在医学和化品中具有应用.
- 使用酵母细胞工厂建立了微生物对视网质的生产,但细胞内积累限制了产量.
- 从微生物宿主中增强视网质分泌对于提高生产效率至关重要.
研究的目的:
- 为了研究内源性酵母PDR (类药物耐药性) 家族蛋白质在增强视网流的潜力.
- 改善*Saccharomyces cerevisiae*中的视网醇,视网膜和视网酸的分泌和整体生产.
- 优化能源供应和前体的可用性,以进一步增强维生素A生物合成.
主要方法:
- 在产生视网的酵母菌株中,特定的PDR家族基因 (如*PDR3*, *PDR10*, *PDR8*) 的过度表达.
- 协同过度表达的策略和视网质分泌和生产水平的评估.
- 通过过度表达*MGM1*和引入血红蛋白 (Vgb) 来增强细胞ATP供应.
- 优化前体供应途径以增加维生素A产量.
主要成果:
- 过度表达*PDR3*,*PDR10*和*Snq2p*显著增加了视网醇和视网膜分泌.
- *PDR8*过度表达明显增强了视网膜酸的产生.
- 创纪录的视网膜产量达到了638.12 mg/L,具有*PDR3*/*PDR10*共同过度表达.
- 网膜醇细胞外比例达到96.7%,具有协同的*PDR3*和*PDR10*过度表达.
- 增强的ATP供应和前体可用性导致727.30 mg/L的网醇产量,碳转化率为7.62%.
结论:
- 工程酵母PDR载体和转录因子是一种有效的策略,可以增强视网质分泌.
- 将运输工程与能源调节和前体供应优化相结合,可以显著提高维生素A的产量.
- 这种综合方法为有效和可扩展的微生物生产维生素A提供了一个有希望的途径.
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