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Optimization of Fermentation Conditions for High Expression Productivity of Recombinant TRAIL |
BAO Xi-Jun,WEI Dong-zhi1,SHEN Ya-ling1,ZHOU Jin-song2,ZHANG Guo-jun2,SUN Jing2,QIU Yi2 |
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Abstract Tumor necrosis factorrelated apoptosisinducing ligand(TRAIL) is a novel anticancer therapeutic agent. In order to reduce the incubation time and enhance the production efficiency, firstly the response surface method was used to optimize the fermentation and expression condition of TRAIL in shake flasks. As a result, the expression of the total TRAIL protein reached 25.7%. Based on this, the influence of fermentation condition to the soluble TRAIL protein expression was studied. The recombinant strains were cultured in 3.7L fermenter and the expression of soluble TRAIL protein per gram cell enhanced 67%. That realized the high soluble expression of TRAIL protein per gram cell in high cell density and the enhancement of volume productivity.
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Received: 23 April 2009
Published: 29 October 2009
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