Convenient plasmid vectors for construction of chimeric mouse/human antibodies

Koh zoh Kameyama, Kenji Imai, Toshihiro Itoh, Masaru Taniguchi, Keiji Miura, Yoshikazu Kurosawa

研究成果: Article査読

14 被引用数 (Scopus)


Chimeric antibodies composed of mouse-derived variable regions and human-derived constant regions have been developed for clinical use. However, construction of chimeric mouse/human genes in expression vectors is time-consuming work. In this study, we developed convenient vectors for construction of chimeric mouse/human antibodies. The protocols are as follows: In mouse hybridomas and B cells, most active VH and Vκ{script} genes can be identified as rearranged bands by Southern hybridization of EcoRI- and HindIII-digested DNAs with JH and Jκ{script} probes, respectively, and such fragments can be isolated in λ-EcoRI and λ-HindIII vectors, respectively. We constructed two plasmids: pSV2-HG1gpt contains human Cγ1 and Ecogpt genes, and only one EcoRI site upstream of the Cγ1 gene; pSV2-HCκ{script}neo contains human Cκ{script} and neo genes, and only one HindIII site upstream of the Cκ{script} gene. An isolated EcoRI fragment containing a VHDHJH gene and a HindIII fragment containing a Vκ{script}Jκ{script} gene are inserted into pSV2-HG1gpt and pSV2-HCκ{script}neo, respectively. Both resulting plasmid DNAs are co-transfected into SP2/0 cell, a non-Ig-secreting mouse myeloma. Transformants are selected by both mycophenolic acid and G418. With this procedure, it takes only 2 months to obtain chimeric antibodies.

ジャーナルFEBS Letters
出版ステータスPublished - 27-02-1989

All Science Journal Classification (ASJC) codes

  • 生物理学
  • 構造生物学
  • 生化学
  • 分子生物学
  • 遺伝学
  • 細胞生物学


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