1. Large-scale production of biologically active human keratinocyte growth factor-2.
- Author
-
Wu X, Tian H, Huang Y, Wu S, Liu X, Wang C, Wang X, Huang Z, Xiao J, Feng W, and Li X
- Subjects
- Biomass, Cell Line, Escherichia coli metabolism, Fermentation, Fibroblast Growth Factor 10 genetics, Genetic Vectors genetics, Humans, Mitogens genetics, Mitogens isolation & purification, Mitogens metabolism, Recombinant Proteins genetics, Recombinant Proteins isolation & purification, Escherichia coli genetics, Fibroblast Growth Factor 10 isolation & purification, Fibroblast Growth Factor 10 metabolism, Gene Expression, Recombinant Proteins metabolism
- Abstract
A rapid and efficient expression and purification system has been developed for large-scale production of biologically active recombinant human keratinocyte growth factor-2 (rhKGF-2). The gene encoding human KGF-2 was cloned into the expression vector pET3c and transformed into Escherichia coli BL21(DE3)/pLys S. Under optimal conditions in a 30-l fermentor, the average bacterial yield and the average expression level of rhKGF-2 of three batches were up to 732 g and 32%, respectively. The recombinant protein was purified by cation exchange and heparin-affinity chromatography. One hundred and sixty five milligrams of pure rhKGF-2 was achieved per liter culture. A preliminary biochemical characterization of purified rhKGF-2 was performed by Western blotting and mitogenic activity analysis, and the results demonstrated that purified rhKGF-2 could react with anti-human KGF-2 antibody and stimulate the proliferation of HaCat cells.
- Published
- 2009
- Full Text
- View/download PDF