Diversification of phenolic glucosides by two UDP-glucosyltransferases featuring complementary regioselectivity

文献类型： 外文期刊

第一作者： Guo, Fei

作者： Guo, Fei;Zhang, Xingwang;You, Cai;Zhang, Chengjie;Li, Fengwei;Liu, Mingyu;Ma, Li;Zhang, Wei;Li, Shengying;Du, Lei;Du, Lei;You, Cai;Feng, Yingang;Qiu, Zetian;Zhao, Guang-Rong;Qiu, Zetian;Zhao, Guang-Rong;Xia, Yuwei;Li, Nan;Zhang, Gang;Luo, Lianzhong;Cao, Fei;Li, Shengying;Zheng, Xianliang

作者机构：

关键词： Phenolic glucosides; Biocatalysis; UDP-glucosyltransferases; Alkylphenol bio-oxidation

期刊名称：MICROBIAL CELL FACTORIES （ 影响因子：6.352； 五年影响因子：6.496 ）

ISSN：

年卷期： 2022 年 21 卷 1 期

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收录情况： SCI

摘要： Background Glucoside natural products have been showing great medicinal values and potentials. However, the production of glucosides by plant extraction, chemical synthesis, and traditional biotransformation is insufficient to meet the fast-growing pharmaceutical demands. Microbial synthetic biology offers promising strategies for synthesis and diversification of plant glycosides. Results In this study, the two efficient UDP-glucosyltransferases (UGTs) (UGT85A1 and RrUGT3) of plant origin, that are capable of recognizing phenolic aglycons, are characterized in vitro. The two UGTs show complementary regioselectivity towards the alcoholic and phenolic hydroxyl groups on phenolic substrates. By combining a developed alkylphenol bio-oxidation system and these UGTs, twenty-four phenolic glucosides are enzymatically synthesized from readily accessible alkylphenol substrates. Based on the bio-oxidation and glycosylation systems, a number of microbial cell factories are constructed and applied to biotransformation, giving rise to a variety of plant and plant-like O-glucosides. Remarkably, several unnatural O-glucosides prepared by the two UGTs demonstrate better prolyl endopeptidase inhibitory and/or anti-inflammatory activities than those of the clinically used glucosidic drugs including gastrodin, salidroside and helicid. Furthermore, the two UGTs are also able to catalyze the formation of N- and S-glucosidic bonds to produce N- and S-glucosides. Conclusions Two highly efficient UGTs, UGT85A1 and RrUGT3, with distinct regioselectivity were characterized in this study. A group of plant and plant-like glucosides were efficiently synthesized by cell-based biotransformation using a developed alkylphenol bio-oxidation system and these two UGTs. Many of the O-glucosides exhibited better PEP inhibitory or anti-inflammatory activities than plant-origin glucoside drugs, showing significant potentials for new glucosidic drug development.

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