title: TCR and CD3 antibody cross-reactivity in 44 species.
abstract: The production of monoclonal antibodies is very costly, and antibodies are only available for a limited number of species. Until a more cost effective method of antibody production is found, identification of cross-reactive antibodies is an alternative approach that can provide investigators studying immunity in minor species with valuable antibody reagents. Flow cytometry was used to test 21 monoclonal antibodies (mAb), raised against alphabeta and gammadelta T cell receptors and CD3 from human and five animal species, for cross-reactivity in 44 different species including 16 species of nonhuman primates, marsupials, carnivores, lagomorphs, rodents, ruminants, swine, cetacean, horse, birds, a reptile, and fish. Fifteen of the mAbs cross-reacted with orthologous molecules in one or more species. Two antibodies, anti-human TCR gammadelta (B1.1), and anti-human CD3 (SP34) were found to costain in 13 species of nonhuman primates. This study has identified valuable new reagents for studying T cell populations in different animal species and for the first time characterized antibodies useful for studying gammadelta T cell populations in many species of primates. These antibodies may be used for further immunity research in species with less well-characterized immune systems.
authors.affiliation: Centre for Biomedical Research, University of Victoria, Victoria, British Columbia, Canada V8W 3N5. conradml@gmail.com
authors.forename: Melanie L
authors.initials: ML
authors.lastname: Conrad
authors.forename: William C
authors.initials: WC
authors.lastname: Davis
authors.forename: Ben F
authors.initials: BF
authors.lastname: Koop
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000276:immunology*; D017252:CD3 Complex / Q000276:immunology*; D003429:Cross Reactions; D005434:Flow Cytometry; D006801:Humans; D010802:Phylogeny; D011948:Receptors, Antigen, T-Cell / Q000276:immunology*; D013045:Species Specificity; D016176:T-Lymphocyte Subsets; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D000911:Antibodies, Monoclonal; D017252:CD3 Complex; D011948:Receptors, Antigen, T-Cell