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工程哈洛蒙纳斯蓝生殖用于从葡萄糖中生产含有3 - 基酸盐,4 - 基酸盐和3 - 基酸盐的聚合物试点生产

Hongtao He¹, Ng Wuh Jer², Qitiao Hu¹

¹School of Life Sciences, Tsinghua University, Beijing, 100084, China.

Metabolic engineering

|March 13, 2025

概括

工程化Halomonas蓝色表化从葡萄糖中产生多3-xybutyrate-co-4-xybutyrate-co-3-xyvalerate) (P34HBHV) 的产物. 这一下一代工业生物技术使可定制,灵活的PHA材料用于试点生产.

科学领域:

微生物生物技术微生物生物技术
聚合物科学聚合物科学
合成生物学合成生物学

背景情况:

聚酸酸 (PHAs) 是具有可调节性质的可生物降解聚合物.
微生物生产PHA为以石油为基础的塑料提供了一个可持续的替代品.
哈洛莫纳斯蓝生殖是工业生物技术的坚固底盘,能够在开放的,不无菌的条件下生长.

研究的目的:

为高效生产聚3-基酸-co-4-基酸-co-3-基酸 (P34HBHV) 设计哈洛马纳斯蓝色化.
通过操纵代谢途径,在P34HBHV中实现可定制的单体比.
为从葡萄糖中合成P34HBHV建立一个可扩展和高生产力的微生物平台.

主要方法:

基因工程的哈洛蒙纳斯蓝基因组合PHA合成基因 (phaC,phaA) 和相关的代谢途径基因 (ogdA,sucD,4hbD,orfZ,scpA,scpB).
基因表达的基于等离子体和染色体的整合策略.
通过基因删除 (例如,lpxM) 和在摇瓶和生物反应器中培养菌株的优化.

主要成果:

工程菌株H29,H39和H43实现了高P34HBHV含量 (在摇瓶中高达92%,在生物反应器中高达78%) 和细胞干重 (高达95g/L).
在P34HBHV聚合物中,证明了对单体比率 (4HB和3HV) 的精确控制.
在100升生物反应器中实现了P34HBHV的试点规模生产.

结论:

从葡萄糖中成功设计了Halomonas蓝色原体,使其从葡萄糖中产生稳定且高产的P34HBHV合成.
建立了一个多功能平台,用于生产P34HBHV,并为工业应用提供量身定制的特性.
为下一代工业生物技术铺平了道路,利用强大的微生物底盘.

关键词:

3 - - 基甲酸盐3 - - 基甲酸盐 4 - - 氧丁酸盐4 - - 氧丁酸盐哈洛蒙纳斯病毒是什么?NGIB NGIB 公司下一代工业生物技术的下一代工业生物技术 PHB PHB PHB PHB PHB PHB PHB PHB PHB PHB PHB PHB PHB PHB PHB PHB PHB PHB 合成生物学合成生物学

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