KSBB Journal

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Effects of Low-Serum Medium and Various Culture Additives on Production of Recombinant Human Erythropoietin in CHO Cell Cultures

CHO 세포 배양을 통한 Recombinant Human Erythropoietin의 생산에서 저혈청 배지와 배양 첨가물질이 미치는 영향

  • Lee, Kyung-Sun (Department of Biological Engineering, Inha University) ;
  • Cha, Hyun-Myoung (Department of Biological Engineering, Inha University) ;
  • Lim, Jin-Hyuk (Department of Biological Engineering, Inha University) ;
  • Kim, Dong-Il (Department of Biological Engineering, Inha University)
  • 이경선 (인하대학교 공과대학 생물공학과) ;
  • 차현명 (인하대학교 공과대학 생물공학과) ;
  • 임진혁 (인하대학교 공과대학 생물공학과) ;
  • 김동일 (인하대학교 공과대학 생물공학과)
  • Received : 2016.03.16
  • Accepted : 2017.05.04
  • Published : 2017.06.30
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Abstract

Mammalian cell cultures have been used extensively to produce proteins for therapeutic agent because of their ability to perform post-translational modification including glycosylation. To produce recombinant protein, many factors and parameter are considered such as media composition, host cell type, and culture process. In this study, recombinant human erythropoietin (rhEPO) producing cell line was established by using glutamine synthetase system. To reduce serum concentration in media, we compared direct adaptation with step adaptation. Cell growth was faster in step adaptation. In low-level serum media, there were insufficient glucose for cell growth. Thus, we added glucose in low-level serum media from 2 g/L to 4.5 g/L. Titer of rhEPO was higher than other conditions at 4.5 g/L of glucose. Additionally, N-methyl-D-aspartate (NMDA), 13-cis-retinal, and pluronic F-68 (PF-68) were added to enhance productivity in CHO cell cultures. In conclusion, we applied CHO cell producing rhEPO to low-level of serum in media using step-adaptation. Also, we confirmed positive effect of NMDA, 13-cis-retinal, and PF-68.

Keywords

Acknowledgement

Supported by : 한국연구재단

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