Cell display library for gene cloning of variable regions of human antibodies to hepatitis B surface antigen

Kazuo Higuchi, Takeyoshi Araki, Osamu Matsuzaki, Akiko Sato, Kimiyoshi Kanno, Nobuya Kitaguchi, Hirataka Ito

研究成果: ジャーナルへの寄稿学術論文査読

25 被引用数 (Scopus)

抄録

A novel cell display system was developed for cloning the variable region (V) genes of antigen-specific human antibodies. The system is based on an antibody library displayed on the surface of COS cells, using a plasmid vector designed to direct expression of membrane-bound antibodies. COS cells expressing antigen-specific antibodies were separated using a flow cytometer for their binding to a fluorescent dye-labeled antigen. To test the performance of this system, we cloned V genes of 4 antibodies directed against hepatitis B surface antigen (HBsAg) from a library prepared from peripheral blood lymphocytes of a vaccinated donor. These membrane-bound anti-HBsAg antibodies were easily converted to soluble forms, all of which showed a size similar to human serum IgG in SDS-PAGE and the same specific binding to HBsAg as membrane-bound forms in ELISA. All V(H) and Y(κ) gene segments of the 4 clones isolated in this study belonged to V(H)III and V(κ)I subgroups, respectively. These findings demonstrate the potential and selection capabilities of our cell display system for cloning the V genes of antigen-specific human antibodies.

本文言語英語
ページ(範囲)193-204
ページ数12
ジャーナルJournal of immunological methods
202
2
DOI
出版ステータス出版済み - 28-03-1997
外部発表はい

All Science Journal Classification (ASJC) codes

  • 免疫アレルギー学
  • 免疫学

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