NAD(+)-dependent HDAC inhibitor stimulates Monascus pigment production but inhibit citrinin

文献类型： 外文期刊

第一作者： Hu, Yan

作者： Hu, Yan;Mao, Zejing;Chen, Fusheng;Shao, Yanchun;Zhou, Youxiang;Li, Huihui

作者机构：

关键词： Monascus ruber;Epigenetic modifier;Dihydrocoumarin;Secondary metabolites;Organism growth

期刊名称：AMB EXPRESS （ 影响因子：3.298； 五年影响因子：3.427 ）

ISSN： 2191-0855

年卷期： 2017 年 7 卷

页码：

收录情况： SCI

摘要： Monascus species are edible fungi due to the production of food colorant and other beneficial compounds. Hence, it has been an attractive thesis to improve their productivities. Increasing numbers of investigations revealed that regulating the activities of histone deacetylases can significantly perturb secondary metabolites (SM) production at a global level. In this study, dihydrocoumarin (DHC, an inhibitor of the Sirtuin family of NAD(+)- dependent deacetylases) was used to treat Monascus ruber for evaluating its effects on organism growth and SM production. The results revealed that the variation trends of colonial sizes, biomass and mycotoxin were in a dose-dependent manner. Generally, they decreased with the increased DHC concentrations in the designed range. But the variation trend of pigment was different. Comparison of SM profile, three new peaks occurred to the mycelia extractions from DHC-treated strain corresponding to molecular weights 402, 416 and 444, respectively. These three compounds were identified as Monasfluol B, Monascus azaphilone C and acetyl-monasfluol B (a new Monascus chemical pigment structure). In short, DHC can stimulate M. ruber strain to produce more pigment-like polyketides but inhibition of mycotoxin (citrinin).

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