With effective cancer treatment or immunotherapy by target specificity and high affinity, therapeutic antibodies have been hot issues. Unlike other recombinant proteins ; erythropoietin (EPO), interferons and growth factors, dosage range of therapeutic antibodies is needed above 5 mg/kg. In addition, productivity of recombinant Chinese hamster ovary (rCHO) cells compared with microorganism is too low, thus experiments to improve productivity is essential. rCHO cells expressing chimeric antibody against CD20 antigen were amplified and selected with methotrexate (MTX) in adherent cultures ,and rCHO cells later adapted in serum-free, protein-free and chemically defined media. First of all, media selection experiment is carried out. After medium with high productivity is chosen, the effects of low temperature conditions with glucose feeding were studied in an attempt to increase antibody production from suspension adapted rCHO cells. When the culture temperature was shifted from 37 ℃ to 30 ℃ at a culture time of 72 h with glucose concentration driving up to 3.5 g/L, final rAb concentration was increased about 7.5 times higher than production at 37 ℃. Establishing a culture condition of high concentration of rAb production, mass production is attempted by Pneumatic bioreactor system (PBS) performed 2 L scale. These scale up culture processes were successfully performed. Based on the results, foundation of development for culture process of rCHO cells producing recombinant antibody was established.
한국생물공학회 [The Korean Society for Biotechnology and Bioengineering]
설립연도
1984
분야
공학>생물공학
소개
이 법인은 생물 공학의 발전과 보급에 이바지하고, 회원 상호 간의 연구 협력과 친목을 도모함을 목적으로 한다
1. 생물공학 분야의 발전을 위한 연구 협력
2. 생물공학의 실용화를 촉진시키기 위한 산학 협동
3. 학술연구 발표회, 강연회, 연수회 등 학술활동의 개최
4. 국,영문 학술지,소식지,학술회의 Proceedings 및 학술도서의 발간
5. 생물공학 발전을 위한 정책 건의
6. 기타 국제 교류 등 본 학회의 목적 달성을 위한 제반 활동
간행물
간행물명
한국생물공학회 학술대회
간기
반년간
수록기간
1985~2013
십진분류
KDC 476DDC 576
이 권호 내 다른 논문 / 한국생물공학회 학술대회 2011년도 한국생물공학회 춘계학술발표대회