2008 Eastern Asian Glycoscience Symposium (2008.11)바로가기
페이지
pp.40-40
저자
Jae-Hoon Moon, Mee Sook Oh, Kong Ju Lee, Yeup Yoon, Jung-Seob Kim
언어
영어(ENG)
URL
https://www.earticle.net/Article/A192308
※ 원문제공기관과의 협약기간이 종료되어 열람이 제한될 수 있습니다.
원문정보
초록
영어
The anti-CD20 antibody, Rituximab has been used for the treatment of B-cell non- Hodgkin's lymphoma (NHL). However, resistance or no responsiveness of some patients has evoked lots of endeavors to improve antibody efficacy through antibody engineering. The therapeutic efficacy of monoclonal antibody generally depends on the carbohydrate moiety linked to the Fc region. Especially, antibody dependent cell- mediated cytotoxicity (ADCC) has been known to be dramatically enhanced by fucose reduction. In this study we have specifically modulated the fucose residue of antibody by expressing therapeutic antibody in CHO cell that contains mutant forms of alpha- 1,6-fucosyltransferase (FUT8) and/or alpha-L-fucosidases. The modified CHO clones with these mutants were selected on the basis of FACS using LCA lectin assay. Compared to unmodified antibody therapeutics, glyco-engineered antibodies showed around 30% reduced fucose content based on the glycan analysis. As a result, these molecules had about 4-fold increase in FcrRIIIa binding activity than that of the original antibody, and up to 5-fold in ADCC using PBMC and B-lymphoma cell system with no effect on complement dependent cytotoxicity (CDC). Therapeutic efficacy of glycol- engineered antibody in B cell lymphoma mouse model could be improved at least over 2-fold when compared to Rituximab. Taken together all these results, a new strategy using FUT8 and/or fucosidase mutants could be applied to enhance therapeutic efficacy of monoclonal antibody.
본 학회는 화학, 생화학, 분자생물학, 미생물학, 식품공학, 의학, 약학, 유전공학 및 생물공학, 환경 및 기타 공업 등 전 분야의 탄수화물관련 이론과 기술을 연구 발전시키고 산학협동을 통해 이를 보급하여 국내 관련 산업의 발전 및 국민생활의 과학화에 기여하고자 하며, 이러한 목표와 비젼의 실현을 위해 회원들이 적극적인 참여와 활동을 전개하고자 한다.
간행물
간행물명
한국당과학회 학술대회
간기
연간
수록기간
2006~2022
십진분류
KDC 517DDC 614
이 권호 내 다른 논문 / 한국당과학회 학술대회 2008 Eastern Asian Glycoscience Symposium