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Mol Biol Rep. 2013 Dec;40(12):6765-74. doi: 10.1007/s11033-013-2793-y. Epub 2013 Sep 25.

Cell death-inducing DFFA-like effector c (CIDEC/Fsp27) gene: molecular cloning, sequence characterization, tissue distribution and polymorphisms in Chinese cattles.

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Shaanxi Key Laboratory of Molecular Biology for Agriculture, College of Animal Science and Technology, Northwest A&F University, No. 22 Xinong Road, Yangling, 712100, Shaanxi, China,


Cell death-inducing DFFA-like effector c (CIDEC) protein, also known as fat specific protein 27 (Fsp27), is localized to lipid droplets. CIDEC protein is required for unilocular lipid droplet formation and optimal energy storage in addition to controlling lipid metabolism in adipocytes and hepatocytes. Research found that Ad-36 could induce lipid droplets in the cultured skeletal muscle cells and this process may be mediated by promoting CIDEC expression. The content of intermuscular fat is an important index for evaluation of beef quality, so the CIDEC gene appeared to be a candidate gene for regulation of intermuscular fat, however similar research for the bovine CIDEC gene is lacking. This paper examined the tissue expression profile of CIDEC gene in cattle using real-time RT-PCR to suggest that bovine CIDEC is highly expressed in adipose tissue. In addition, the Bovine CIDEC gene was cloned and inserted into the eukaryotic expression vector pET-28a(+), whereupon recombinant bovine CIDEC protein was induced and identified by Western-blot. A phylogenetic analysis showed that the animo acid sequence of bovine CIDEC was closer to mammalian CIDEC than rasorial CIDEC. We found ten single nucleotide polymorphisms sites (SNPs) in bovine CIDEC gene, of which SNP 2, 3, 4, 6 and 9, and SNP 8 and 10 were in complete linkage disequilibrium, respectively. SNP 1, 2 and 10 were used in further haplotype studies. Eight different haplotypes were identified in 973 cattle, of which haplotype 8 predominated with frequencies ranging from 42.90 to 54.30 %. This research provides a basis for future functional studies of CIDEC in cattle.

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