Abstract
Rearrangements involving the 1p36 chromosomal region occur frequently in NHL, suggesting the existence of tumor suppressor gene(s) that are important in lymphomagenesis. p73 is closely related to the tumor suppressor p53 and maps to the chromosome 1p36 region. Here we report heterozygous deletions of the p73 locus in 25% of FL and 27% of DLBCL cases, as detected by FISH. Immunohistochemical analysis showed that four out of five cases with p73 deletions also exhibited increased Ki67 expression, indicating higher proliferation rates of the tumor cells. Our results demonstrate a high proportion of p73 locus specific deletions in NHL and suggest that deletion of this locus may play a role in the progression of NHL.
MeSH terms
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Cell Proliferation
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Chromosomes, Human, Pair 1
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DNA-Binding Proteins / genetics*
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Gene Deletion*
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Genes, Tumor Suppressor
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Heterozygote
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Humans
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Immunohistochemistry
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In Situ Hybridization, Fluorescence
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Incidence
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Ki-67 Antigen / analysis
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Loss of Heterozygosity*
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Lymphoma, Follicular / etiology
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Lymphoma, Follicular / genetics
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Lymphoma, Follicular / pathology
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Lymphoma, Large B-Cell, Diffuse / etiology
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Lymphoma, Large B-Cell, Diffuse / genetics
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Lymphoma, Large B-Cell, Diffuse / pathology
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Lymphoma, Non-Hodgkin / etiology
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Lymphoma, Non-Hodgkin / genetics*
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Lymphoma, Non-Hodgkin / pathology
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Nuclear Proteins / genetics*
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Tumor Protein p73
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Tumor Suppressor Proteins
Substances
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DNA-Binding Proteins
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Ki-67 Antigen
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Nuclear Proteins
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TP73 protein, human
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Tumor Protein p73
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Tumor Suppressor Proteins