ArticleJournal of biological engineering2026
Multi-omics-guided discovery of CYP5035 enables heterologous production and engineering of pachymic acid in yeast.
Article in Journal of biological engineering, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Pachymic acid is a key bioactive triterpenoid of Poria cocos, a medicinal fungus widely used in traditional Chinese medicine, and is responsible for its anti-tumor and anti-inflammatory activities. However, its low natural abundance and reliance on pine wood-based cultivation limit large-scale production and therapeutic application. Methyl jasmonate (MeJA) is known to stimulate triterpenoid biosynthesis in plants and fungi. In this study, we treated liquid-cultured Poria cocos mycelia with MeJA and integrated transcriptomic and targeted metabolomic analyses to identify a cytochrome P450 gene, CYP5035, whose expression strongly correlates with pachymic acid accumulation. We then functionally validated CYP5035 by heterologous expression in Saccharomyces cerevisiae. Subsequent metabolic engineering of the yeast strain-through redox partner optimization and dynamic flux redirection-significantly enhanced pachymic acid production. Our work not only reveals the molecular basis of MeJA-induced triterpenoid synthesis but also establishes a sustainable microbial platform for the green and efficient production of pachymic acid.
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