[A fundamental study of immunoscintigraphy with 131I-labeled anti-CA 19-9 and anti-CEA monoclonal antibodies--imaging of tumor-bearing mice by IMACIS-1 and cell ELISA with human tumor cells].
A study was made on 2 types of 131I-labeled anti-CA 19-9 and anti-CEA mouse monoclonal antibodies (IMACIS-1) against human cancer related antigen as to their usefulness in radioimmunoimaging. Tumor-bearing nude mice were used for comparison. The transplanted tumors (SW948, COLO 201) were clearly visualized 48-72 hours after administration of IMACIS-1. Tumor/blood ratio 72 hours after administration: 8.69 in COLO 201 and 5.70 in SW948, showing ca. 10-15 times as high as those in PC-3 and HEp-2. IMACIS-1 therefore is considered useful in radioimmunoimaging of cancer. Analysis was made by in vitro cell ELISA. As a result, both of the cells specifically reacted with anti-CA 19-9 but not anti-CEA.
Product License Department, CIS DIAGNOSTIC K.K.
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Nogami
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Miura
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Ohmi
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Kazahaya
D000818:Animals; D000911:Antibodies, Monoclonal; D015295:Antigens, Tumor-Associated, Carbohydrate / Q000032:analysis / Q000276:immunology*; D002272:Carcinoembryonic Antigen / Q000032:analysis / Q000276:immunology*; D004797:Enzyme-Linked Immunosorbent Assay; D006801:Humans; D007457:Iodine Radioisotopes; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D008819:Mice, Nude; D009368:Neoplasm Transplantation; D009374:Neoplasms, Experimental / Q000000981:diagnostic imaging* / Q000276:immunology; D011877:Radionuclide Imaging; D014407:Tumor Cells, Cultured / Q000276:immunology
D000911:Antibodies, Monoclonal; D015295:Antigens, Tumor-Associated, Carbohydrate; D002272:Carcinoembryonic Antigen; C057468:Imacis-1; D007457:Iodine Radioisotopes