期刊
METABOLIC ENGINEERING
卷 27, 期 -, 页码 92-100出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ymben.2014.11.003
关键词
Chondroitin; Escherichia coli; Glycosaminoglycan; Capsular polysaccharide; Metabolic engineering
资金
- Rensselaer Polytechnic Institute, NSF [MCB-1448657]
- NIH [HL62244]
- NATIONAL HEART, LUNG, AND BLOOD INSTITUTE [R01HL062244] Funding Source: NIH RePORTER
Chondroitin sulfates, widely used in the treatment of arthritis, are glycosaminoglycans extracted from food animal tissues. As part of our ongoing efforts to separate the food chain from the drug chain, we are examining the possibility of using metabolic engineering to produce chondroitin sulfate in Escherichia coli Chondroitin is a valuable precursor in the synthesis of chondroitin sulfate. This study proposes a safer and more feasible approach to metabolically engineer chondroitin production by expressing genes from the pathogenic E. coii 1(4 strain, which natively produces a capsular polysaccharide that shares the similar structure with chondroitin, into the non-pathogenic E. coli BL21 Star (TM) (DE3) strain. The ePathBrick vectors, allowing for multiple gene addition and expression regulatory signal control, are used for metabolic balancing needed to obtain the maximum potential yield. The resulting engineered strain produced chondroitin, as demonstrated by H-1 NMR and disaccharide analysis, relying on chondrotinase treatment followed by liquid chromatography mass spectrometry. The highest yield from shake flask experiment was 213 mg/L and further increased to 2.4 g/L in dissolved oxygen-stat fed batch bioreactor. (C) 2014 International Metabolic Engineering Society. Published by Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据