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Natural products of pentacyclic triterpenoids: from discovery to heterologous biosynthesis

文献类型: 外文期刊

作者: Li, Yanlin 1 ; Wang, Jing 3 ; Li, Linyong 1 ; Song, Wenhui 1 ; Li, Min 1 ; Hua, Xin 1 ; Wang, Yu 1 ; Yuan, Jifeng 4 ; Xue, Zheyong 1 ;

作者机构: 1.Northeast Forestry Univ, Key Lab Saline Alkali Vegetat Ecol Restorat, Minist Educ, Harbin, Peoples R China

2.Northeast Forestry Univ, Heilongjiang Key Lab Plant Bioact Subst Biosynth &, Harbin, Peoples R China

3.Beijing Acad Agr & Forestry Sci, Inst Forestry & Pomol, Beijing, Peoples R China

4.Xiamen Univ, Sch Life Sci, State Key Lab Cellular Stress Biol, Fujian 361102, Peoples R China

期刊名称:NATURAL PRODUCT REPORTS ( 影响因子:15.111; 五年影响因子:14.513 )

ISSN: 0265-0568

年卷期:

页码:

收录情况: SCI

摘要: Covering: up to 2022 Pentacyclic triterpenoids are important natural bioactive substances that are widely present in plants and fungi. They have significant medicinal efficacy, play an important role in reducing blood glucose and protecting the liver, and have anti-inflammatory, anti-oxidation, anti-fatigue, anti-viral, and anti-cancer activities. Pentacyclic triterpenoids are derived from the isoprenoid biosynthetic pathway, which generates common precursors of triterpenes and steroids, followed by cyclization with oxidosqualene cyclases (OSCs) and decoration via cytochrome P450 monooxygenases (CYP450s) and glycosyltransferases (GTs). Many biosynthetic pathways of triterpenoid saponins have been elucidated by studying their metabolic regulation network through the use of multiomics and identifying their functional genes. Unfortunately, natural resources of pentacyclic triterpenoids are limited due to their low content in plant tissues and the long growth cycle of plants. Based on the understanding of their biosynthetic pathway and transcriptional regulation, plant bioreactors and microbial cell factories are emerging as alternative means for the synthesis of desired triterpenoid saponins. The rapid development of synthetic biology, metabolic engineering, and fermentation technology has broadened channels for the accumulation of pentacyclic triterpenoid saponins. In this review, we summarize the classification, distribution, structural characteristics, and bioactivity of pentacyclic triterpenoids. We further discuss the biosynthetic pathways of pentacyclic triterpenoids and involved transcriptional regulation. Moreover, the recent progress and characteristics of heterologous biosynthesis in plants and microbial cell factories are discussed comparatively. Finally, we propose potential strategies to improve the accumulation of triterpenoid saponins, thereby providing a guide for their future biomanufacturing.

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