Application of dynamic regulation strategies in metabolic engineering

Yu Zheng; SHEN Xiaolin; Sun Xinxiao; Wang Jia; Yuan Qipeng

doi:10.12211/2096-8280.2020-029

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Application of dynamic regulation strategies in metabolic engineering

Invited Review | 更新时间：2025-03-20

- Application of dynamic regulation strategies in metabolic engineering
- Synthetic Biology Journal Vol. 1, Issue 4, Pages: 440-453(2020)
- 作者机构：
  
  北京化工大学化工资源有效利用国家重点实验室，北京 100029
- 作者简介：
- 基金信息：
- DOI：10.12211/2096-8280.2020-029
  CLC： Q812
- Received：19 March 2020，
  
  Revised：2020-04-29，
  
  Published：31 August 2020
- 稿件说明：
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于政, 申晓林, 孙新晓, 王佳, 袁其朋. 动态调控策略在代谢工程中的应用研究进展[J]. 合成生物学, 2020, 1(4): 440-453

Yu Zheng, SHEN Xiaolin, Sun Xinxiao, Wang Jia, Yuan Qipeng. Application of dynamic regulation strategies in metabolic engineering[J]. Synthetic Biology Journal, 2020, 1(4): 440-453
于政, 申晓林, 孙新晓, 王佳, 袁其朋. 动态调控策略在代谢工程中的应用研究进展[J]. 合成生物学, 2020, 1(4): 440-453 DOI： 10.12211/2096-8280.2020-029.

Yu Zheng, SHEN Xiaolin, Sun Xinxiao, Wang Jia, Yuan Qipeng. Application of dynamic regulation strategies in metabolic engineering[J]. Synthetic Biology Journal, 2020, 1(4): 440-453 DOI： 10.12211/2096-8280.2020-029.

摘要

微生物细胞工厂作为一种可持续的生化反应器，被广泛应用于天然产物、药品、营养保健品等高附加值产物的生产中。为了使细胞工厂在生产过程中以最大的产量、产率和生产能力生产目标化合物，往往需要利用代谢工程方法对细胞工厂进行合理的改造和调控。以基因敲除和过表达为主要策略的静态调控不可避免地带来了细胞代谢流与能量流失衡、生长阻滞和毒性中间体积累等问题，限制了细胞工厂的生产能力、碳收率和产物产量。为了解决这一问题，构建调控元件并设计基因线路以精确调节物质流及能量流的动态调控策略被普遍应用于代谢工程领域，成为调控微生物细胞工厂的常用方法之一。本文依据不同动态调控策略的特点，将动态调控策略分为代谢物响应、群体感应响应、环境响应和蛋白质水平调控四种类型，重点介绍了各种调控元件的构建方法及其在代谢工程中的应用，分析了不同调控策略在工业化应用中面临的挑战。同时，指出了高通量筛选和蛋白质工程方法、计算机模拟和数学模型分析、耦合基因控制元件等方面的策略在解决动态调控工具响应阈值窄、调控范围有限等问题中的应用潜力。

Abstract

As a sustainable biochemical reactor

microbial cell factories are widely used in the production of value-added compounds such as natural products

pharmaceuticals and nutraceuticals. In order to make microbial cell factories produce target compounds with high titer

productivity and yield

metabolic engineering strategies are employed to rationally modify and regulate their metabolism. However

knockout and overexpression of genes inevitably bring stresses such as redox imbalance and toxic intermediate accumulation. While dynamic control strategy has been proven as a promising tool to address these challenges by balancing carbon flux and energy generation and dissipation for cell growth and generation of target compounds. As a result

many dynamic regulation elements and gene circuits have been developed and widely used in metabolic engineering so far. In this review

we summarize four types of attractive dynamic regulation systems based on metabolite-response

quorum sensing-response

environmental parameter-response and protein level regulation

with a focus on the construction method of various regulatory elements and their applications in metabolic engineering. In addition

challenges faced by different dynamic control strategies in industrial applications are analyzed. At the same time

we prospect the application potentials of some strategies such as high-throughput screening

protein engineering

computer simulation and mathematical model analysis coupled with gene control elements in solving the problems of narrow response threshold and limited control range of dynamic regulation tools. With the further development of synthetic biology and metabolic engineering

we believe that dynamic control strategy will be widely used for the construction of microbial cell factories in the near future.

关键词

Keywords

references

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