원문정보
초록
영어
Plant-derived peptones (PPs) have been utilized to improve cell growth and volumetric productivity in plant cell cultures. PPs contain amino acids, carbohydrates and minerals. Carbon (C) and nitrogen (N) sources have been known as major factors in plant cell cultures. Supplementation of chemically defined medium with PP was found to enhance cell growth and the production of human cytotoxic T-lymphocyte antigen 4-immunoglobulin (hCTLA4Ig) significantly in transgenic rice cell suspension cultures. Therefore, it was necessary to investigate the effects of C and N sources for the improvement of recombinant protein production. The concentrations of C and N sources used in this study were as follows: 0 (control), 1, 3, 5% (w/v) of sucrose and 10, 20, 30 g/L of PP. In case of adding 3% sucrose with 10 g/L of PP, maximum dry cell weight was 1.9-fold higher than that of control and the maximum level of hCTLA4Ig reached up to 64.8 mg/L. Whereas hCTLA4Ig was not produced in control cultures. In conclusion, it was found that the determination of optimal concentration ratio between C and N sources are important to improve cell growth and hCTLA4Ig production in transgenic rice cell cultures.