Production of Monoclonal Antibodies Specific to Korean Mistletoe pectin (KML-C) and Their Characterization

한국산 겨우살이 렉틴 (KML-C)에 대한 단일크론항체의 생산과 특성

  • 윤택준 (한동대학교 생의학연구소, 경희대학교 동서의학대학원 종양연구팀) ;
  • 유영춘 (건양대학교 의과대학 미생물학 교실) ;
  • 강태봉 (한동대학교 생의학연구소) ;
  • 김성훈 (경희대학교 동서의학대학원 종양연구팀) ;
  • 김갑수 (카프리바이오텍 주식회사)
  • Published : 2001.04.01

Abstract

We have reported that water-extracted Korean mistletoe (KM-110) had various biological activities such as antitumor and immunomodulatory activity, and the pectin fraction (KML-C) of the extract was one of major factors related to its biological functions. In this paper, we produced murine monoclonal antibody (mAb) against KML-C. The cAbs obtained were largely classified into two groups according to specificity to KML-C and ML-I, a pectin from European mistletoe. One group mAbs (9H7-D10 and 3C2-lH4) strongly reacted with KML-C, but not ML-I. In contrast, another group cAbs (8Bll-2C5, BE12-3E9 and 5E10-Fl) reacted with both KML-C and ML-1. The subisotypes of these mobs were shown to be IgGl (9H7-lD10, 3C2-lH4 and 8Bll-2C5) or IgM (8E12-3E9 and 5E10-Fl). To develop an assay system for determination of the amount of KML-C, we established the sandwich ELISA (enzyme-linked immunosorbent assay) method using these mAbs and horse radish peroxidase (HRP)-labelled cAbs. In various combinations of the cAbs for coated antibody and detection antibody, the sandwich ELISA quantitatively detected KML-C, showing the detection limit ranging from 7-5,000 ng/ml. Especially reproducibility (C.V) of the sandwich ELISA, in which 8E12-3E9 was used for coating antibody and 8Bll-2C5-HRP for detection antibody, was 4.59-5.83 in intra assay, and 3.9-9.4 in inter assay.

Keywords

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