Identification of an amino acid responsible for the CD3 polymorphism in cynomolgus monkeys (Macaca fascicularis)

J Med Primatol. 2003 Apr;32(2):105-10. doi: 10.1034/j.1600-0684.2003.00012.x.

Abstract

The FN18 monoclonal antibody (mAb), directed to CD3 molecules, did not react with the lymphocytes of some cynomolgus monkeys (Macaca fascicularis), because of the polymorphism of the CD3epsilon chain. The epitope recognized by the FN18 mAb was successfully expressed on COS7 cells upon transfection of plasmid DNA coding for the CD3epsilon derived from T cells of a FN18 positive cynomolgus monkey. By construction and expression of plasmid DNA encoding the mutant CD3epsilon, the amino acid residue at position 67 was demonstrated to be involved in the formation of an epitope recognizable by the FN18 mAb.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Animals
  • Antibodies, Monoclonal / immunology*
  • Antibody Specificity
  • Base Sequence
  • CD3 Complex / chemistry
  • CD3 Complex / genetics*
  • CD3 Complex / immunology*
  • COS Cells
  • Epitopes / genetics*
  • Epitopes / immunology*
  • Macaca fascicularis / genetics*
  • Macaca fascicularis / immunology
  • Molecular Sequence Data
  • Mutation
  • Polymorphism, Genetic*

Substances

  • Antibodies, Monoclonal
  • CD3 Complex
  • Epitopes