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Expression Profiles and Biological Roles of miR-196a in Swine

Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A & F University, Yangling 712100, China
College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China
Author to whom correspondence should be addressed.
Academic Editor: Roel Ophoff
Received: 20 November 2015 / Revised: 30 December 2015 / Accepted: 12 January 2016 / Published: 22 January 2016
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MicroRNAs (miRNAs) are a class of small non-coding RNA molecules, which play important roles in animals by targeting mRNA transcripts for translational repression. Recent studies have demonstrated that miRNAs are involved in regulation of adipocyte development. The expression of miR-196a in different porcine tissues and developing fat tissues was detected, and gene ontology (GO) term enrichment was then used to predict the expression profiles and potential biological roles of miR-196a in swine. To further verify the roles of miR-196a in porcine adipocyte development, a recombinant adenovirus encoding miR-196a gene (Ad-miR-196a) was constructed and used to study the effect of miR-196a on preadipocyte proliferation and differentiation. Here, our data demonstrate that miR-196a displays a tissue-specific expression pattern and has comprehensive biological roles in swine, especially in adipose development. In addition, overexpression of miR-196a had no effect on preadipocyte proliferation, but induced preadipocyte differentiation by increasing expression of adipocyte specific markers, lipid accumulation and triglyceride content. These data represent the first demonstration of miR-196a expression profiles and roles in swine, thereby providing valuable insight into the functions of miR-196a in adipocyte biology. View Full-Text
Keywords: miR-196a; swine; expression; adipocyte; proliferation; differentiation miR-196a; swine; expression; adipocyte; proliferation; differentiation

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Ning, X.; Liu, S.; Qiu, Y.; Li, G.; Li, Y.; Li, M.; Yang, G. Expression Profiles and Biological Roles of miR-196a in Swine. Genes 2016, 7, 5.

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