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Immunologic, virologic, and genetic aspects of mammary tumor virus-induced cell-surface antigens: presence of these antigens and the Thy 1.2 antigen on murine mammary gland and tumor cells. 1975

J Hilgers, and J Haverman, and R Nusse, and W J van Blitterswijk, and F J Cleton, and P C Hageman, and P van Nie, and J Calafat

The distribution of the normal differentiation antigen Thy 1 and the mammary tumor virus (MTV)-induced antigens or antigen complexes MLm and MLr were studied in mouse mammary gland cells, mammary tumor cells, and other cell types, by use of ascites leukemia cells of the GR mouse strain as target cells in the cytotoxicity test. The Thy 1.2 antigen was detected by an AKR antiserum to C3Hf thymocytes. MLm was shown by a homologous C57BL antiserum to GRSL2 leukemia (absorbed in vivo in GR mice); MLr was detected by a rabbit heterologous antiserum (absorbed in vivo in C57BL or GR mice and in vitro with BALB/c milk) prepared against Tween 80- and ether-treated purified B particles. Sera from Sprague-Dawley rats bearing murine leukemia virus (MuLV)-producing syngeneic tumors were not cytotoxic or only slightly cytotoxic for GR leukemias transplanted in vivo, which indicated that MuLV-induced antigens were absent or present in very low quantity in such leukemias. The MLr and MLn antigens or antigen complexes were possibly identical to the mammary leukemia (ML) antigen, since they could be detected not only on GR but also on DBA/2 leukemia cells and since their distribution was exactly the same as that of MTV. Both the MLr and MLm antigens were present in purified B particles, and antigenic activity were present in purified B particles, and antigenic activity was enhanced by destruction of the purified virus particles. The antigens were about eightfold enriched in a preparation of B-particle envelopes, as shown by quantitative cytotoxicity absorption (CYTA) tests. Purified nucleoid fractions of B particles were only lightly positive for the antigen, probably due to envelope contamination. One dominant gene was responsible for the expression of MLr, as shown by CYTA tests with mammary glands of individual animals of segregating crosses between the GR strain with high mammary cancer incidence and strains with low incidence. This gene was closely linked with or was possibly identical to 1) the gene for cytoplasmic MTV gs antigen expression as seen by fixed cell immunofluorescence, and 2) the gene causing mammary tumors in the GR mouse strain.

UI MeSH Term Description Entries
D007942 Leukemia, Experimental Leukemia induced experimentally in animals by exposure to leukemogenic agents, such as VIRUSES; RADIATION; or by TRANSPLANTATION of leukemic tissues. Experimental Leukemia,Experimental Leukemias,Leukemia Model, Animal,Leukemias, Experimental,Animal Leukemia Model,Animal Leukemia Models,Leukemia Models, Animal
D007945 Leukemia, Lymphoid Leukemia associated with HYPERPLASIA of the lymphoid tissues and increased numbers of circulating malignant LYMPHOCYTES and lymphoblasts. Leukemia, Lymphocytic,Lymphocytic Leukemia,Lymphoid Leukemia,Leukemias, Lymphocytic,Leukemias, Lymphoid,Lymphocytic Leukemias,Lymphoid Leukemias
D008040 Genetic Linkage The co-inheritance of two or more non-allelic GENES due to their being located more or less closely on the same CHROMOSOME. Genetic Linkage Analysis,Linkage, Genetic,Analyses, Genetic Linkage,Analysis, Genetic Linkage,Genetic Linkage Analyses,Linkage Analyses, Genetic,Linkage Analysis, Genetic
D008113 Liver Neoplasms Tumors or cancer of the LIVER. Cancer of Liver,Hepatic Cancer,Liver Cancer,Cancer of the Liver,Cancer, Hepatocellular,Hepatic Neoplasms,Hepatocellular Cancer,Neoplasms, Hepatic,Neoplasms, Liver,Cancer, Hepatic,Cancer, Liver,Cancers, Hepatic,Cancers, Hepatocellular,Cancers, Liver,Hepatic Cancers,Hepatic Neoplasm,Hepatocellular Cancers,Liver Cancers,Liver Neoplasm,Neoplasm, Hepatic,Neoplasm, Liver
D008175 Lung Neoplasms Tumors or cancer of the LUNG. Cancer of Lung,Lung Cancer,Pulmonary Cancer,Pulmonary Neoplasms,Cancer of the Lung,Neoplasms, Lung,Neoplasms, Pulmonary,Cancer, Lung,Cancer, Pulmonary,Cancers, Lung,Cancers, Pulmonary,Lung Cancers,Lung Neoplasm,Neoplasm, Lung,Neoplasm, Pulmonary,Pulmonary Cancers,Pulmonary Neoplasm
D008321 Mammary Glands, Animal MAMMARY GLANDS in the non-human MAMMALS. Mammae,Udder,Animal Mammary Glands,Animal Mammary Gland,Mammary Gland, Animal,Udders
D008324 Mammary Tumor Virus, Mouse The type species of BETARETROVIRUS commonly latent in mice. It causes mammary adenocarcinoma in a genetically susceptible strain of mice when the appropriate hormonal influences operate. Bittner Virus,Mammary Cancer Virus,Mouse mammary tumor virus,Mammary Tumor Viruses, Mouse
D008325 Mammary Neoplasms, Experimental Experimentally induced mammary neoplasms in animals to provide a model for studying human BREAST NEOPLASMS. Experimental Mammary Neoplasms,Neoplasms, Experimental Mammary,Experimental Mammary Neoplasm,Mammary Neoplasm, Experimental,Neoplasm, Experimental Mammary
D008806 Mice, Inbred AKR An inbred strain of mouse that is widely used in IMMUNOLOGY studies and cancer research. Mice, AKR,Mouse, AKR,Mouse, Inbred AKR,AKR Mice,AKR Mice, Inbred,AKR Mouse,AKR Mouse, Inbred,Inbred AKR Mice,Inbred AKR Mouse
D008807 Mice, Inbred BALB C An inbred strain of mouse that is widely used in IMMUNOLOGY studies and cancer research. BALB C Mice, Inbred,BALB C Mouse, Inbred,Inbred BALB C Mice,Inbred BALB C Mouse,Mice, BALB C,Mouse, BALB C,Mouse, Inbred BALB C,BALB C Mice,BALB C Mouse

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