Abstract
Natural killer (NK) cells and interferon (IFN)-gamma have been implicated in immune surveillance against tumor development. Here we show that tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) plays a critical role in the NK cell-mediated and IFN-gamma-dependent tumor surveillance. Administration of neutralizing monoclonal antibody against TRAIL promoted tumor development in mice subcutaneously inoculated with a chemical carcinogen methylcholanthrene (MCA). This protective effect of TRAIL was at least partly mediated by NK cells and totally dependent on IFN-gamma. In the absence of TRAIL, NK cells, or IFN-gamma, TRAIL-sensitive sarcomas preferentially emerged in MCA-inoculated mice. Moreover, development of spontaneous tumors in p53(+/-) mice was also promoted by neutralization of TRAIL. These results indicated a substantial role of TRAIL as an effector molecule that eliminates developing tumors.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Antibodies, Monoclonal / immunology
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Antibodies, Monoclonal / pharmacology
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Apoptosis / genetics
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Apoptosis / immunology
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Apoptosis Regulatory Proteins
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Cytotoxicity, Immunologic / genetics
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Cytotoxicity, Immunologic / immunology*
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Interferon-gamma / genetics
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Interferon-gamma / immunology*
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Killer Cells, Natural / immunology*
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Male
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Membrane Glycoproteins / genetics
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Membrane Glycoproteins / immunology*
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Mice
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Mice, Inbred C57BL
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Mice, Knockout
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Neoplasms, Experimental / genetics
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Neoplasms, Experimental / immunology*
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Neoplasms, Experimental / prevention & control
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TNF-Related Apoptosis-Inducing Ligand
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Tumor Necrosis Factor-alpha / genetics
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Tumor Necrosis Factor-alpha / immunology*
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Tumor Suppressor Protein p53 / genetics
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Tumor Suppressor Protein p53 / immunology
Substances
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Antibodies, Monoclonal
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Apoptosis Regulatory Proteins
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Membrane Glycoproteins
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TNF-Related Apoptosis-Inducing Ligand
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Tnfsf10 protein, mouse
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Tumor Necrosis Factor-alpha
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Tumor Suppressor Protein p53
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Interferon-gamma