Abstract
Defects in the major histocompatibility complex (MHC) class I antigen-processing machinery (APM) have been described in tumors of different histology. Murine data suggest that defects in the MHC class II APM might also be associated with malignant transformation of human cells. This article describes the pathophysiology of the MHC class I and II APM, reviews APM abnormalities in tumor cells and discusses their role in the escape of tumor cells from in vitro recognition by T cells.
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
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Review
MeSH terms
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ATP Binding Cassette Transporter, Subfamily B, Member 3
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ATP-Binding Cassette Transporters / physiology
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Animals
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Antigen Presentation*
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Cysteine Endopeptidases / physiology
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Histocompatibility Antigens Class I / physiology
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Histocompatibility Antigens Class II / physiology
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Humans
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Multienzyme Complexes / physiology
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Neoplasms / etiology*
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Neoplasms / immunology
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Proteasome Endopeptidase Complex
Substances
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ATP Binding Cassette Transporter, Subfamily B, Member 3
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ATP-Binding Cassette Transporters
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Histocompatibility Antigens Class I
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Histocompatibility Antigens Class II
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Multienzyme Complexes
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TAP2 protein, human
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Cysteine Endopeptidases
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Proteasome Endopeptidase Complex