NF-κB and ZBP-89 regulate MMP-3 expression via a polymorphic site in the promoter
Copyright policy )NF-κB and ZBP-89 regulate MMP-3 expression via a polymorphic site in the promoter
A 5T/6T polymorphism in the human MMP-3 promoter affects gene expression and impacts the risk and/or severity of various pathological conditions. Chromatin immunoprecipitation (ChIP) in human fibroblasts homozygous for the 6T site demonstrate that it is bound by NF-kappaB and ZBP-89 transcription factors in its native chromatin. ChIP in COS-1 cells transfected with plasmids containing the 5T and 6T sites in the context of 2kb of the MMP-3 promoter showed that NF-kappaB p50 binds preferentially to the 6T site, while more ZBP-89 binding is detected to the 5T site. Over-expressed ZBP-89 increased transcription from the 5T promoter but not from the 6T, while NF-kappaB decreased transcription from both promoters, even in the presence of excess ZBP-89. A model is suggested in which the physiological impact of the polymorphism is dependent on the relative levels and activities of these competing factors in various cell types and conditions.
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Transcription, Genetic, animal cell, protein binding, zinc binding protein 89, Chlorocebus aethiops, genetic polymorphism, animal, genetics, NF-kB, Promoter Regions, Genetic, article, NF-kappa B, gene expression regulation, unclassified drug, DNA-Binding Proteins, cell strain COS1, immunoglobulin enhancer binding protein, priority journal, zinc binding protein, COS Cells, Matrix Metalloproteinase 3, enzyme regulation, ZNF148, ZBP-89, regulatory mechanism, chromatin immunoprecipitation, Cercopithecus, Cercopithecus aethiops, Promoter Regions, promoter region, Stromelysin-1, Genetic, plasmid, Animals, Humans, controlled study, human, Polymorphism, protein expression, ZNF148 protein, nonhuman, Polymorphism, Genetic, binding site, human cell, genetic transcription, stromelysin, DNA binding protein, Matrix metalloproteinase, Gene Expression Regulation, genetic transfection, Transcription factor, metabolism, Transcription Factors
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