Abstract
CD30+ anaplastic large cell lymphoma (ALCL) represents a novel lymphoma entity at the borderline between Hodgkin's disease and non-Hodgkin's lymphomas. Phenotypic, genotypic, and karyotypic analyses have shown that ALCL are heterogeneous in cellular origin, and may be conceived as malignancies derived from activated, mainly T- or B-lymphoid cells, in some instances with an immature genotype. Epstein-Barr virus genomes and gene products, most notably the transformation-associated latent membrane protein (LMP), have been detected in a proportion of cases, and some cutaneous ALCL proved to harbor complete or incomplete HTLV-1 proviruses. These findings suggest that both EBV and HTLV-I, which are powerful inducers of CD30 expression in lymphoid cells in vitro, may contribute to the pathoetiology of ALCL.
MeSH terms
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Aged
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Antibodies, Monoclonal / immunology
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Antigens, CD / analysis*
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Antigens, CD / biosynthesis
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Antigens, Neoplasm / analysis*
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Antigens, Neoplasm / biosynthesis
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Carcinoma / chemistry
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Carcinoma / microbiology
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DNA, Viral / analysis
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Gene Expression Regulation, Neoplastic
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Gene Expression Regulation, Viral
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HTLV-I Infections / microbiology
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Herpesvirus 4, Human / genetics
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Herpesvirus 4, Human / isolation & purification*
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Herpesvirus 4, Human / pathogenicity
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Human T-lymphotropic virus 1 / genetics
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Human T-lymphotropic virus 1 / isolation & purification*
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Human T-lymphotropic virus 1 / pathogenicity
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Humans
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Ki-1 Antigen
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Lymphocyte Activation
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Lymphoma, Large B-Cell, Diffuse / classification
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Lymphoma, Large B-Cell, Diffuse / microbiology*
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Middle Aged
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Nasopharyngeal Neoplasms / chemistry
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Nasopharyngeal Neoplasms / microbiology
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Neoplasm Proteins / analysis*
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Neoplasm Proteins / biosynthesis
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Neoplastic Stem Cells / metabolism
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Neoplastic Stem Cells / microbiology
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Retroviridae Proteins / analysis
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Retroviridae Proteins / genetics
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Skin Neoplasms / microbiology*
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Tumor Virus Infections / microbiology*
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Viral Proteins / analysis
Substances
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Antibodies, Monoclonal
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Antigens, CD
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Antigens, Neoplasm
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DNA, Viral
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Ki-1 Antigen
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Neoplasm Proteins
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Retroviridae Proteins
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Viral Proteins