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Characterization and promoter activity analysis of a new porcine gene: NICE-3.

DNA Cell Biol.2010 Mar;29(3):141-7. doi:10.1089/dna.2009.0946
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摘要


Through comparative gene mapping, NICE-3, which is closely linked to tropomyosin 3 in human chromosome 1, was selected to be investigated as a new candidate gene associated with the muscle development in pigs. This gene was sequenced, chromosome mapped, expression analyzed, subcellularly localized, and promoter activity analyzed. After screening and sequencing, porcine NICE-3 was found in a bacterial artificial chromosome clone containing tropomyosin 3. Quantitative reverse transcription-polymerase chain reaction revealed that NICE-3 mRNA was widely expressed, with highest expression levels in longissimus dorsi muscles, followed by heart, biceps femoris, liver, kidney, back fat, and lowest expression levels in spleen, brain, lymph, lung, stomach, and small and large intestines. Fluorescence and confocal microscopy assay demonstrated that the fusion protein, GFP-NICE-3, was distributed throughout the cytoplasm, including the plasma membrane. NICE-3 was mapped to Sus scrofa chromosome 4, in a region of conserved synteny with human chromosome 1, where the homologous human gene is localized. Results of dual reporter gene assays and mutation experiments combined with electrophoresis mobility shift assays showed that the retinoid X receptor might be an important transcription factor affecting the promoter activity of this gene.

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