Reference: Lei C, et al. (2024) Regulating the metabolic flux of pyruvate dehydrogenase bypass to enhance lipid production in Saccharomyces cerevisiae. Commun Biol 7(1):1399

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Abstract


To achieve high efficiency in microbial cell factories, it is crucial to redesign central carbon fluxes to ensure an adequate supply of precursors for producing high-value compounds. In this study, we employed a multi-omics approach to rearrange the central carbon flux of the pyruvate dehydrogenase (PDH) bypass, thereby enhancing the supply of intermediate precursors, specifically acetyl-CoA. This enhancement aimed to improve the biosynthesis of acetyl-CoA-derived compounds, such as terpenoids and fatty acid-derived molecules, in Saccharomyces cerevisiae. Through transcriptomic and lipidomic analyses, we identified ALD4 as a key regulatory gene influencing lipid metabolism. Genetic validation demonstrated that overexpression of the mitochondrial acetaldehyde dehydrogenase (ALDH) gene ALD4 resulted in a 20.1% increase in lipid production. This study provides theoretical support for optimising the performance of S. cerevisiae as a "cell factory" for the production of commercial compounds.

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Journal Article
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Lei C, Guo X, Zhang M, Zhou X, Ding N, Ren J, Liu M, Jia C, Wang Y, Zhao J, ... Show all
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