非光合作用生物混合细菌中的光驱代谢途径
Shane Bassett1, Yuchen Ding1, Micaela K Roy2
1Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80303, USA.
Chembiochem : a European journal of chemical biology
|October 20, 2023
概括
工程纳米生物混合生物 (Nanorgs) 使用光而不是糖作为能量,克服了生物制造中的代谢瓶. 这项创新增强了细菌生长和代谢物生产,为高效,低成本的生物工艺铺平了道路.
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:
- 生物制造通常使用碳基板作为能源和原料,导致代谢效率低下.
- 目前的方法面临的挑战是辅因子再生和基质转换效率.
- 纳米粒子生物混合化提供了一种潜在的途径来绕过这些限制.
研究的目的:
- 引入纳米生物混合生物 (Nanorgs) 用于通过光介导控制细菌代谢.
- 调查纳米机器人替代传统碳基板以光作为能源的潜力.
- 提高生物制造效率和代谢物生产.
主要方法:
- 在非光合作用细菌中使用量子点和histidine标记的酶形成细胞内蛋白质-纳米粒子混合体 (Nanorgs).
- 利用光作为主要的能源来驱动工程化大肠杆菌中的细菌代谢.
- 采用碳同位素标签用于代谢跟踪,以确认代谢流量重定向.
主要成果:
- 纳米器官消除了代谢收缩,并用光取代葡萄糖,在75%的减少介质中增加了大肠杆菌的1.7倍增长.
- 代谢分析证实了向的路径流量调节和代谢物积累.
- 使用以埃里希路径进行的纳米器官,提高了异芽醇标位/产量3.9倍,在未经修改的大肠杆菌中使用了75%的少糖.
结论:
- 纳米生物为细菌的光介导代谢控制提供了一种新的策略.
- 这种方法显著提高了增长和生产效率,同时减少了对传统基板的依赖.
- 纳米机器人在推进代谢工程和实现低成本生物制造方面显示出相当大的前景.
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