Characterization of monoclonal antibodies raised against the prostatic cancer cell line PC-82.
For production of monoclonal antibodies (McAbs), hybrid cells were prepared by fusion of spleen cells of BALB/c mice immunized with the human prostatic cancer cell line PC-82 and the P3-X6(3)Ag8.653 murine myeloma cell line. Supernatants of approximately 500 hybrid clones were screened for prostate specific antibodies using an ELISA on PC-82 cells. A selection of antibodies was further tested for their specificity on a large series of different tissues. A broad cross reactivity pattern was obtained. Most cross reactivity was with pancreatic tissue, kidney, and bowel. One antibody turned out to react with prostate stromal cells. Two McAbs (ER-Pr 1 and ER-Pr 2) reacted solely with prostatic epithelium. Monoclonal antibody affinity chromatography combined with SDS-PAGE showed that both antibodies were directed against a 35-kD protein. Immunoblotting revealed that this protein is identical to prostatic antigen (PA). The epitope detected by ER-Pr 1 and ER-Pr 2 was largely preserved after formalin-fixation of prostatic tissues which renders these antibodies very suitable for routine examination of tissue sections.
D000818:Animals; D000911:Antibodies, Monoclonal / Q000276:immunology*; D000941:Antigens / Q000276:immunology; D000951:Antigens, Neoplasm / Q000276:immunology; D002460:Cell Line; D006801:Humans; D008297:Male; D051379:Mice / Q000276:immunology; D008807:Mice, Inbred BALB C / Q000276:immunology; D017430:Prostate-Specific Antigen; D011471:Prostatic Neoplasms / Q000276:immunology*
D000911:Antibodies, Monoclonal; D000941:Antigens; D000951:Antigens, Neoplasm; D017430:Prostate-Specific Antigen