Jul 1, 1989

Syngeneic monoclonal antimelanoma antibodies and their application for analysis of tumor antigens, gene cloning, and in vitro/in vivo diagnosis

Pigment Cell Research
M TaniguchiM Tagawa


In this article, we summarized syngeneic monoclonal antimelanoma antibodies and their application for chemical characterization of mouse melanoma antigens, cloning of genomic DNA controlling antigen expression, and in vivo/in vitro tumor diagnosis. The melanoma antigen is composed of a protein complex in association with GM3(NeuAc)-like sugar moiety. The GM3 structure expresses the cross-species epitopes shared in various mammalian species, whereas the mouse specific melanoma epitope is present on protein molecules. By using the monoclonal antimelanoma reactive with GM3 epitope, we developed a very sensitive sandwich radioimmunoassay system detecting soluble melanoma antigens equivalent to 10(2)-10(3) cells/ml. The antibody was also useful in imaging tumor in vivo. These results indicate that the antibody with cross-species reactivity has a potential for tumor targeting. The monoclonal antibody M562 recognizing protein molecule with species specific epitope but not other antimelanoma antibodies, however, effectively inhibited experimental lung metastasis of melanoma cells, indicating that the M562 epitope seems to possess important biological functions. Recently, the genomic DNA controlling the antigen expression was successful...Continue Reading

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Mentioned in this Paper

Malignant Neoplasm of Skin
Monoclonal Antibodies
Antigenic Specificity
DNA, Neoplasm
Neoplasm Metastasis
Tumor Antigens
Malignant Neoplasm of Lung
Melanoma, Harding-Passey

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