Abstract
ICAM-1-mediated cell-cell adhesion is essential for various immunologic functions, including non-MHC-restricted cytotoxicity. Shedding of ICAM-1 occurred after stimulation of melanoma cells with TNF alpha and IFN gamma. Soluble forms of ICAM-1 inhibited the conjugate formation of NK clones with K562 and of LAK cells with melanoma cells. Furthermore, the non-MHC-restricted cytotoxicity mediated by NK clones or LAK cells could be abrogated by soluble ICAM-1.
MeSH terms
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Cell Adhesion Molecules / chemistry
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Cell Adhesion Molecules / metabolism*
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Cell Adhesion*
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Cytotoxicity, Immunologic*
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Humans
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Immunity, Cellular*
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Intercellular Adhesion Molecule-1
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Interferon-gamma / pharmacology
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Melanoma / immunology
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Melanoma / metabolism*
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Solubility
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Tumor Cells, Cultured
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Tumor Necrosis Factor-alpha / pharmacology
Substances
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Cell Adhesion Molecules
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Tumor Necrosis Factor-alpha
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Intercellular Adhesion Molecule-1
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Interferon-gamma