4th 2009 Annual Meeting of Korean Society for Glycoscience in 2009 (2009.11)바로가기
페이지
pp.46-46
저자
Seung-Yeol Park, Seon-Joo Yoon, Jin-Man Kim, Ji-Yeon Kim, Bradford Bernert, Thomas Ullman, Steven H. Itzkowitz, Jung-Hoe Kim, Sen-itiroh Hakomori
언어
영어(ENG)
URL
https://www.earticle.net/Article/A192521
※ 원문제공기관과의 협약기간이 종료되어 열람이 제한될 수 있습니다.
원문정보
초록
영어
The glycosyl epitope dimeric Lea (Lea-on-Lea), defined by mouse monoclonal antibody NCC-ST-421, was identified previously as tumor-associated antigen, expressed highly in various human cancer tissues and cell lines derived therefrom, but with minimal expression in various normal tissues. In the present study, we observed clearly higher expression of this epitope, defined by ST421, in β-haptoglobin (β-Hap) from sera of patients with colorectal cancer, compared to normal, healthy subjects or patients with chronic inflammatory processes (Crohn\'s disease, ulcerative colitis). We focused, therefore, on biochemical characterization of glycosyl epitope status expressed in β-Hap. We concluded that the dimeric Lea epitope is carried by O-linked but not by N-linked structure, based on the following observations: (i) Strong reactivity of Colo205 supernatant with ST421 was reduced clearly by pre-incubation of cells with benzyl-α -GalNAc. (ii) Treatment of β-Hap with α-L-fucosidase reduced its reactivity with ST421, but did not affect its reactivity with anti-Hap antibody. In contrast, treatment of purified β-Hap with PNGase F, which releases N-linked glycans, had no effect on reactivity with ST421, but changed molecular mass from 40 kDa to 30 kDa.
저자
Seung-Yeol Park [ Department of Biological Sciences, KAIST, Division of Biomembrane Research, PNRI, Seattle, WA 98122 ]
Seon-Joo Yoon [ Division of Biomembrane Research, PNRI, Seattle, WA 98122 ]
Jin-Man Kim [ Department of Biological Sciences, KAIST, Republic of Korea ]
Ji-Yeon Kim [ Department of Biological Sciences, KAIST, Republic of Korea ]
Bradford Bernert [ Department of Biological Sciences, KAIST, Republic of Korea ]
Thomas Ullman [ Department of Biological Sciences, KAIST, Republic of Korea ]
Steven H. Itzkowitz [ Department of Biological Sciences, KAIST, Republic of Korea ]
Jung-Hoe Kim [ Department of Biological Sciences, KAIST, Republic of Korea ]
Sen-itiroh Hakomori [ Division of Biomembrane Research, PNRI, Seattle, WA 98122 ]
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 4th 2009 Annual Meeting of Korean Society for Glycoscience in 2009