A role for HNF-3 in the regulation of the HNF-1 gene of the Atlantic salmon
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- Stenson-Cox, C., McNair, A., Curley, M. et al. Mol Gen Genomics (2002) 266: 832. doi:10.1007/s00438-001-0602-0
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Hepatocyte nuclear factors -1 (HNF-1) and -3 (HNF-3) are hepatocyte-enriched transcription factors that are central to the establishment and maintenance of the liver phenotype in vertebrates. In the present study we demonstrate that, in the Atlantic salmon, asHNF-3 regulates the expression of the gene for asHNF-1. Multiple putative binding sites for asHNF-3 were identified within the 5′ flanking region of the HNF-1 gene using a computer-based algorithm, and these were confirmed to be functional by electrophoretic mobility shift assays. In transient transfection assays it was shown that co-expression of asHNF-3 leads to a decrease in the promoter activity of the 5′ flanking region of the asHNF-1 gene.