[Optimization of fermentation of recombinant human Endostatin (rh-Endostatin) expression in Escherichia coli].
The fermentation process of recombinant human Endostatin expression in Escherichia coli BL21 (DE3) was studied. The effects of factors such as concentration of IPTG, induction time, cultivation temperature and feeding strategies were investigated. Beside that, by changing the temperature to 40 degrees C after induction, the high-density cultivation finished in a much shorter period. After 9 hours cultivation, the optical density (OD) at 600 nm reached 140 and the yield of inclusion body was 3 g/L. While E. coli system was used, protein with better activity and stability was obtained. The cost was much lower and the producing process was much steadier. It will meet the demands of the industrial production.
Chang
Guo-Dong
GD
State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, China.
Li
Zhuang-Lin
ZL
Qin
Jia-Yang
JY
Ma
Cui-Qing
CQ
Luo
Yong-Zhang
YZ
Xu
Ping
P
D043169:Endostatins / Q000096:biosynthesis* / Q000235:genetics; D004926:Escherichia coli / Q000235:genetics / Q000254:growth & development / Q000378:metabolism*; D005285:Fermentation; D006801:Humans; D015202:Protein Engineering; D011994:Recombinant Proteins / Q000096:biosynthesis* / Q000235:genetics; D013862:Thiogalactosides / Q000737:chemistry
D043169:Endostatins; D011994:Recombinant Proteins; D013862:Thiogalactosides