title: Production of a monoclonal antibody-bleomycin conjugate utilizing dextran T-40 and the antigen-targeting cytotoxicity of the conjugate.
abstract: Bleomycin (BLM), a potent anticancer glycopeptide antibiotic, was linked covalently to murine monoclonal anti-HLA IgG1 antibody (H-1) with the use of dextran T-40. As determined spectrophotometrically, the conjugate was composed of 57.5 moles BLM per mole antibody. Of the substituted BLM, 18.4% (10.6 moles BLM per mole antibody) exhibited antimicrobial activity. The BLM-(H-1) conjugate showed stronger cytotoxicity than BLM alone against HLA-bearing cells in cultivation after a 30-min exposure to the drugs. In the same experiment, the conjugate was less toxic than BLM against cells lacking HLA.
mesh_terms: D000911:Antibodies, Monoclonal / Q000008:administration & dosage*; D001402:B-Lymphocytes / Q000187:drug effects* / Q000502:physiology; D001761:Bleomycin / Q000633:toxicity*; D002460:Cell Line; D002470:Cell Survival / Q000187:drug effects; D006680:HLA Antigens / Q000276:immunology; D006801:Humans; D006825:Hybridomas / Q000276:immunology; D007945:Leukemia, Lymphoid / Q000503:physiopathology*; D008215:Lymphocytes, Null / Q000187:drug effects* / Q000502:physiology
chemical_list: D000911:Antibodies, Monoclonal; D006680:HLA Antigens; D001761:Bleomycin