Microbial cell factories have emerged as a transformative platform for the sustainable production of chemicals, fuels, pharmaceuticals, and high-value biomolecules. By harnessing the metabolic capabilities of microorganisms and combining them with modern genetic engineering tools, researchers are able to convert renewable resources into valuable products with high efficiency. Advances in metabolic engineering, systems biology, and synthetic biology have significantly improved the performance, robustness, and productivity of engineered microbial systems. Microorganisms such as bacteria, yeast, and filamentous fungi are increasingly used as bio-production hosts due to their rapid growth, genetic flexibility, and ability to synthesize complex compounds. In recent years, innovations in pathway optimization, genome editing, transcriptional control, and multiscale engineering have enabled the construction of highly efficient microbial platforms capable of industrial-scale biomanufacturing. Furthermore, microbial cell factories contribute to environmental sustainability by reducing reliance on fossil resources and minimizing industrial pollution. The integration of computational modeling, omics technologies, and synthetic biology has further expanded the potential of microbial engineering. This review provides a comprehensive overview of the principles of microbial cell factory engineering, the role of metabolic and synthetic biology approaches, and recent technological advances that enhance product yield and industrial feasibility. In addition, the review highlights emerging strategies for improving microbial robustness and scalability while addressing the challenges associated with industrial implementation. Overall, microbial cell factories represent a promising strategy for achieving sustainable and eco-friendly biomanufacturing in the modern bioeconomy.
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The authors declare no conflicts of interest related to this study.
The author confirms sole responsibility for the following: study conception and design, data collection, analysis and interpretation of results, and manuscript preparation.
The authors did not receive any specific grants from funding agencies in the public, commercial, or non-profit sectors for the research, authorship, and/or publication of this article.
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I thank the following individuals for their expertise and assistance in all aspects of our study and for their help in writing the manuscript. I am also grateful for the insightful comments given by anonymous peer reviewers. Everyone's generosity and expertise have improved this study in myriad ways and saved me from many errors.
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