摘要
本文以一株产RGD-TRAIL的重组大肠杆菌为研究对象,在10L发酵罐中考查了诱导温度、pH值、溶氧、流加葡萄糖对重组大肠杆菌生长和RGD-TRAIL蛋白表达的影响。结果表明:诱导温度25℃,pH值控制7.0,溶氧控制30%,以5g·L^(-1)·h^(-1)流速流加葡萄糖最有利于菌体生长和蛋白表达,菌体收率和RGD-TRAIL产量分别达到45.99g·L^(-1)和160.2mg·L^(-1)。
To study and optimize the fermentation parameters for expressing RGD-TRAIL during recombinant E.coli high density fermentation,the effects of temperature,pH,dissolved oxygen,fed-batch of glucose on the cell growth and the protein expression were investigated to optimize the fermentation conditions.The results showed that the following conditions were best for the cell growth and the protein expression：temperature of 25℃,pH 7.0,dissolved oxygen of 30%,and glucose feeding rate at 5g·L^（-1）·h^（-1）.Under the optimized conditions,the cell yield and RGD-TRAIL yield reached to 45.99g·L^（-1） and 160.2mg·L^（-1）,respectively.
出处
《氨基酸和生物资源》
CAS
2016年第1期70-75,共6页
Amino Acids & Biotic Resources
基金
国家科技重大专项一重大新药创制(2009ZX09103-675
2012ZX09401012)
常州科技支撑计划(社会发展)(CE20115044)
