由代谢网络分析发现菌种代谢工程改造新策略

doi:10.16085/j.issn.1000-6613.2017-0557

化工进展 ›› 2017, Vol. 36 ›› Issue (12): 4592-4600.DOI: 10.16085/j.issn.1000-6613.2017-0557

由代谢网络分析发现菌种代谢工程改造新策略

袁倩倩^1,2,3, 李斐然^1,2,3, 罗浩³, 马红武³, 赵学明^1,2

1 天津大学化工学院, 天津 300350;
2 天津大学教育部系统生物工程重点实验室, 天津 300350;
3 中国科学院天津工业生物技术研究所, 中国科学院系统微生物技术重点实验室, 天津 300308

收稿日期:2017-03-31 修回日期:2017-05-11 出版日期:2017-12-05 发布日期:2017-12-05
通讯作者: 马红武,研究员,主要研究方向为代谢网络模型指导的代谢工程改造。
作者简介:袁倩倩(1988-),女,博士研究生,研究方向为代谢网络模型指导的代谢工程菌种改造。E-mail:yuanqian@tju.edu.cn;李斐然(1993-),女,硕士研究生,研究方向为基因组尺度代谢网络模型构建及分析。E-mail:lifeiran_summer@tju.edu.cn。
基金资助:
国家重点基础研究发展计划（2012CB725203）、国家自然科学基金（21621004，21390201）、天津科技支撑项目（14ZCZDSY00060）及中国科学院重点研究项目（ZDRW-ZS-2016-3）。

Discovery of new strain modification strategies by metabolic network analysis

YUAN Qianqian^1,2,3, LI Feiran^1,2,3, LUO Hao³, MA Hongwu³, ZHAO Xueming^1,2

1 School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China;
2 Key Laboratory of Systems Bioengineering, Ministry of Education, Tianjin 300350, China;
3 Key Laboratory of Systems Microbial Biotechnology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China

Received:2017-03-31 Revised:2017-05-11 Online:2017-12-05 Published:2017-12-05

摘要/Abstract

摘要： 微生物菌种需要经过一系列代谢工程改造才能实现高产特定产品，而经过二十多年的研究积累，应用传统代谢工程方法通过局部途径分析发现菌种改造策略遇到严重瓶颈，急需从新的角度进行分析以发现新的改造策略。本文结合本实验室已有工作以及文献报道的实例，阐述了应用代谢网络模型分析发现产品合成新途径进而指导代谢工程菌种改造方面的研究进展。本文总结了代谢网络模型的构建方法及应用代谢网络模型进行途径预测的常用方法，将已有的模型指导代谢途径改造的策略总结为两类，即模型指导的产品从无到有和从有到优的改造策略，并结合实例分别对这两类策略进行详细阐述。同时本文阐述了目前利用代谢网络模型进行途经预测中存在的问题，并且针对这些问题提出了一些可行的解决方案。

关键词: 代谢, 生物工程, 模型, 优化设计

Abstract: A series of metabolic engineering modifications are needed for high efficient microbial production of bioproducts. After about 20 years' of extensive studies, the traditional metabolic engineering methods depending on intuitive analysis of local pathways are facing big challenges in discovery of new engineering strategies and new methods from different aspects are required. In this paper, the recent research progresses, on using computational analysis of large scale metabolic networks for the design of new pathways to new products or improved production yield, was reviewed; and how a microbial strain could be modified to enable and strengthen the new pathways for efficient production of biochemicals. The methods of reconstructing metabolic network model and commonly used methods for metabolic network prediction for discovering new strategies were elaborated. Metabolic pathways designed by metabolic networks were categorized into two groups, namely guiding the strain to produce a certain product from scratch or from low to high yield. In this paper, examples of combining these two types of strategies were presented. The various problems encountered in the computational design of new metabolic pathways were discussued, and feasible solutions to address those problems were proposed to enable reliable pathway design.

Key words: metabolism, biological engineering, model, optimal design

中图分类号:

Q-1
Q-332

袁倩倩, 李斐然, 罗浩, 马红武, 赵学明. 由代谢网络分析发现菌种代谢工程改造新策略[J]. 化工进展, 2017, 36(12): 4592-4600.

YUAN Qianqian, LI Feiran, LUO Hao, MA Hongwu, ZHAO Xueming. Discovery of new strain modification strategies by metabolic network analysis[J]. Chemical Industry and Engineering Progress, 2017, 36(12): 4592-4600.

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由代谢网络分析发现菌种代谢工程改造新策略

Discovery of new strain modification strategies by metabolic network analysis

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