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J Agric Food Chem. 2018 Nov 14;66(45):12122-12130. doi: 10.1021/acs.jafc.8b04243. Epub 2018 Oct 30.

Comparative Analysis of Long Noncoding RNAs Expressed during Intramuscular Adipocytes Adipogenesis in Fat-Type and Lean-Type Pigs.

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Laboratory of Animal Fat Deposition & Muscle Development, College of Animal Science and Technology , Northwest A&F University , Yangling , Shaanxi 712100 , China.


The meat quality of local breed pigs is more tender and juicier than the imported varieties. The important reason is that the intramuscular fat content is high. Even through modest sequence conservation and evolution, the expression pattern and function of long noncoding RNAs (lncRNAs) seem to be conserved. In spite of that, analysis of lncRNAs associated with intramuscular fat development remains unknown to us in porcine. Here, we systematically investigated lncRNAs of intramuscular adipocytes of fat local Bamei pigs and lean Large White pigs to consider the function of lncRNAs on intramuscular fat development. We selected three piglets of both breeds separately to isolate intramuscular preadipocytes, performed RNA sequencing across four stages (0, 2, 4, and 8 d) during the intramuscular preadipocytes differentiation, and identified 1932 lncRNAs (760 novel). In addition, we have screened lnc_000414 closely related to fat synthesis. This lncRNA function as an inhibitor in the proliferation of porcine intramuscular adipocytes. These novel findings will provide new targets for improving pork quality and making pig breeding better.


adipogenesis; intramuscular adipocyte; lncRNA-seq; lnc_000414; pig

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