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异源表达聚酮类化合物前体的研究进展 被引量:2

Progress in Improving the Supply of Precursors for Heterologous Expression of Polyketides
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摘要 聚酮类抗生素因其重要的生物活性在临床上广泛应用。该类化合物主要由微生物代谢生成。然而由于合成聚酮化合物的天然菌株存在各种限制,影响着聚酮化合物的高效生产与应用。通过聚酮化合物的异源表达可以有效解除这些限制,目前成为研究热点。聚酮化合物异源表达的一个关键限制性因素是胞内前体物质供应不足。概述了在典型异源表达宿主菌中提高聚酮化合物前体供应的策略:通过对前体合成途径的重新改进或者引入到异源表达宿主菌中重构代谢网络、过表达外源前体合成途径、抑制旁支代谢流、敲除内源性次级代谢产物代谢途径,提高前体供应。为异源表达聚酮化合物的研究及工业化生产提供借鉴。 Polyketides have been widely used in clinical because of their important biological activities. in the natural strains there are various of limitations in the process of synthesis polyketides. The heterologous expression can lift the restriction as a useful tool affect the application of the The key limiting factor forheterologous expression of polyketides is the inadequate supply of intracellular precursors. An overview on strategies to improve the supply of the precursors in the typical heterologous expression host strains is provided: introduce the biosynthetic pathway of the precursors to the heterologous expression host bacteria to reconstruct the metabolic network, over-express the synthesis pathway of the heterologous precursor, inhibite metabolic branch flux, knockout within-derived metabolic pathways, to improve the supply of precursors. It provides a reference for research and industrial production of heterologous expression
出处 《中国生物工程杂志》 CAS CSCD 北大核心 2012年第11期107-114,共8页 China Biotechnology
基金 国家自然科学基金(21076148) 天津市科技支撑计划重点项目(11ZCKSY01000) 教育部博士点基金(20100032120012) 教育部新世纪优秀人才支持计划(NCET-10-0616)资助项目
关键词 聚酮化合物异源表达 前体供应 Polyketides Heterologous expression Precursor supply
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