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Regulating microbial cell factories to resist ROS stress in chemical production
Li Zhang1, Zhijie Cheng2, Jianan Yang2
1College of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng, 224051, Jiangsu, China. zlyzhangli@163.com.
Archives of Microbiology
|July 24, 2026
Summary
Escherichia coli cell factories generate reactive oxygen species (ROS) during chemical production, impairing cell viability. Engineering ROS balance is key to improving microbial production efficiency and robustness.
Area of Science:
- Biotechnology
- Microbial Engineering
- Metabolic Engineering
Background:
- Escherichia coli (E. coli) are workhorses for producing chemicals from biomass.
- High-level production generates reactive oxygen species (ROS), causing oxidative stress and limiting yields.
- Existing antioxidant systems struggle to cope with excessive ROS, damaging cellular components.
Purpose of the Study:
- To review ROS regulation mechanisms in E. coli cell factories.
- To explore strategies for mitigating oxidative stress in microbial chemical biosynthesis.
- To identify challenges and solutions for engineering robust cell factories.
Main Methods:
- Literature review focusing on ROS homeostasis in E. coli.
- Discussion of regulatory circuit architecture and functional components.
- Analysis of engineering strategies in both prokaryotic and eukaryotic systems.
Main Results:
- ROS accumulation significantly impairs E. coli cell viability and chemical production.
- Understanding ROS homeostasis is crucial for improving biosynthesis.
- Engineering ROS-balanced systems offers a path to enhanced robustness and efficiency.
Conclusions:
- Dynamic control of oxidative stress is essential for optimizing E. coli cell factories.
- Further research into ROS regulation can unlock higher chemical yields.
- Developing ROS-balanced microbial factories promises improved industrial biotechnology.
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