Research progresses and future prospects of synthetic methylotrophic cell factory for methanol assimilation

ZHANG Hui; YUAN Yaomeng; ZHANG Chong; YANG Song; XING Xinhui

doi:10.12211/2096-8280.2020-048

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Research progresses and future prospects of synthetic methylotrophic cell factory for methanol assimilation

Invited Review | 更新时间：2025-03-20

- Research progresses and future prospects of synthetic methylotrophic cell factory for methanol assimilation
- Synthetic Biology Journal Vol. 2, Issue 2, Pages: 222-233(2021)
- 作者机构：
  
  1.青岛农业大学生命科学学院，山东青岛　266109
  2.青岛农业大学，山东省应用真菌重点实验室，山东青岛　266109
  3.清华大学化学工程系生物化工研究所，工业生物催化教育部重点实验室，北京 100084
  4.清华大学合成与系统生物学研究中心，北京　100084
  5.青岛农业大学，青岛生物沼气环境微生物国际合作基地，山东青岛　266109
- 作者简介：
- 基金信息：
- DOI：10.12211/2096-8280.2020-048
  CLC： Q815
- Received：15 June 2020，
  
  Revised：2021-01-11，
  
  Published：30 April 2021
- 稿件说明：
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张卉, 袁姚梦, 张翀, 杨松, 邢新会. 合成甲基营养细胞工厂同化甲醇的研究进展及未来展望[J]. 合成生物学, 2021, 2(2): 222-233

ZHANG Hui, YUAN Yaomeng, ZHANG Chong, YANG Song, XING Xinhui. Research progresses and future prospects of synthetic methylotrophic cell factory for methanol assimilation[J]. Synthetic Biology Journal, 2021, 2(2): 222-233
张卉, 袁姚梦, 张翀, 杨松, 邢新会. 合成甲基营养细胞工厂同化甲醇的研究进展及未来展望[J]. 合成生物学, 2021, 2(2): 222-233 DOI： 10.12211/2096-8280.2020-048.

ZHANG Hui, YUAN Yaomeng, ZHANG Chong, YANG Song, XING Xinhui. Research progresses and future prospects of synthetic methylotrophic cell factory for methanol assimilation[J]. Synthetic Biology Journal, 2021, 2(2): 222-233 DOI： 10.12211/2096-8280.2020-048.

摘要

甲醇具有来源广、易储存运输、原料价格竞争力强等优势，被视为极具潜力的生物制造非糖基碳源资源。常用的模式底盘微生物研究历史长、认知清楚、操作工具多，在工程化改造中具有显著优势。近年来，通过借鉴天然甲基营养型微生物的甲醇利用途径对模式底盘进行改造，获得具备高效利用甲醇能力的合成甲基营养细胞工厂的研究日益受到关注。本文系统综述合成甲基营养细胞工厂的甲醇氧化、同化基因及其调控元件，和以共用糖基碳源结合适应性进化策略为主的核酮糖单磷酸途径重构及甲醇同化途径设计构建的研究现状，进而结合合成甲基营养细胞工厂面临的挑战进行展望，提出基于全基因组靶向基因编辑技术结合实验室适应性进化策略构建更高效合成甲基营养细胞工厂的研究方向。

Abstract

Methanol is an important and attractive non-sugar carbon source for industry biotechnology due to its advantages of available source

easy storage

convenient transportation and competitive price. The widely-studied microorganisms such as

Escherichia coli

Corynebacterium glutamicum

and

Saccharomyces cerevisiae

have a long research history

clear genetic background and a number of matured genetic tools

showing their potential in engineering cell factories for bioproduction. With the accumulated knowledge of native methylotrophs in recent years

these traditi

onal industrial microorganisms have been engineered as methylotrophic cell factories (MeCFs) capable of using methanol as the major carbon and energy source. In this artical

we review the recent research progress including genes involved in the methanol oxidation

assimilation and regulatory elements of MeCFs. We also summarized the strategies based on the adaptive laboratory evolution which applies sugar as the co-substrate to construct the ribulose monophosphate (RuMP) cycle

as well as strategies for designing and tuning methanol assimilation pathway. In the synthetic MeCFs

the construction of the RuMP cycle requires the introduction of three heterologous enzymes

i.e.

methanol dehydrogenase encoded by

mdh

3-hexulose 6-phosphate synthase encoded by

hps

and 6-phospho 3-hexuloisomerase encoded by

phi

. These enzymes can be further engineered to improve activities through protein engineering and directed evolution. Meanwhile

genes involved in methanol oxidation and assimilation pathways can be finely tuned to exhibit dynamic expression. To further improve methanol utilization of the synthetic MeCFs

the co-substrate for supporting growth has been developed to propel methanol assimilation

which rationally designs a methanol dependent growth model

and thus provides an ideal starting point for subsequent long-term adaptive laboratory evolution experiments. At the end

we discuss the challenges of engineering the synthetic MeCFs

and summarize the future prospects for improving the efficiency of methanol utilization through the combined strategies of genome-wide targeted gene editing and adaptive laboratory evolution.

关键词

Keywords

references

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