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- W4384388030 abstract "Osthole is a coumarin compound found in the traditional Chinese medicine Cnidium monnieri. Extensive studies have shown that osthole exhibits many medicinal properties, and recently, researchers have found that it possesses potent airway-relaxation activity by inhibiting phosphodiesterase 4D activity, making it a potential novel bronchodilator that does not target β2-adrenoceptors for asthma treatment. Here, we report the complete biosynthesis of osthole in engineered yeast. We created an umbelliferone (UMB)-producing strain by reconstituting the complete UMB pathway in yeast. We found that coumarin synthase (COSY) is essential for the conversion of 2',4'-dihydroxycinnamoyl-CoA into UMB in yeast; this conversion has been treated as a spontaneous step in previously reported UMB-producing microbials. By introducing downstream prenyltransferase and methyltransferase genes and addressing problems such as protein expression and cofactor supply to fulfill the downstream steps, complete biosynthesis of osthole was achieved. Finally, through metabolic engineering, to ensure precursor supply, and the debugging of rate-limited steps, the osthole titer reached 108.10 mg/L in shake flasks and 255.1 mg/L in fed-batch fermentation. Our study is the first to produce osthole using engineered microbes, providing a blueprint for the supply of plant-derived osthole via microbial fermentation, which will remove the barriers of resource limitations for osthole-based drug development." @default.
- W4384388030 created "2023-07-15" @default.
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- W4384388030 date "2023-07-14" @default.
- W4384388030 modified "2023-10-17" @default.
- W4384388030 title "Biosynthesis of the Plant Coumarin Osthole by Engineered <i>Saccharomyces cerevisiae</i>" @default.
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- W4384388030 doi "https://doi.org/10.1021/acssynbio.3c00321" @default.
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