文献类型：期刊文献

英文题名：Enhancement of ansamitocin P-3 production in Actinosynnema pretiosum by a synergistic effect of glycerol and glucose

作者：Gao, Yang[1];Fan, Yuxiang[1];Nambou, Komi[1];Wei, Liujing[1];Liu, Zhijie[1];Imanaka, Tadayuki[1];Hua, Qiang[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China

年份：2014

卷号：41

期号：1

起止页码：143

外文期刊名：JOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY

收录：;EI(收录号：20242616523378);WOS:【SCI-EXPANDED(收录号:WOS:000329324700016)】；

基金：This work was financially supported by the National Basic Research Program of China (973 Program) (2012CB721101), National Special Fund for State Key Laboratory of Bioreactor Engineering (2060204), and partially supported by Shanghai Leading Academic Discipline Project (B505).

语种：英文

外文关键词：Actinosynnema pretiosum; Ansamitocin P-3 Glycerol; Metabolic regulation; Transcriptional level

摘要：Ansamitocin P-3 (AP-3), a secondary metabolite produced by Actinosynnema pretiosum, is well known for its extraordinary antitumor properties and is broadly utilized in clinical research. Through this work, we found, for the first time, that the combination of glucose and glycerol as a mixed carbon source is an appropriate approach for enhancing the production of AP-3 by A. pretiosum. The amount yielded was about threefold that obtained with glucose as the sole carbon source. In order to better understand the mechanisms that channel glycerol metabolism towards AP-3 production, the activities of some key enzymes such as glucose-6-phosphate dehydrogenase, glucose-6-phosphate isomerase, phosphoglucomutase (PGM), and fructose 1,6-bisphosphatase were assessed. The results showed that glycerol affects the production of AP-3 by increasing PGM activity. Furthermore, qRT-PCR analysis revealed that transcriptional levels of structural genes asm14 and asm24, and primary genes amir5189 and amir6327 were up-regulated in medium containing glycerol.