ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2018, Vol. 49 ›› Issue (7): 1343-1353.doi: 10.11843/j.issn.0366-6964.2018.07.003

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Identification and Analysis of circRNAs in Intramuscular Adipose Tissues between Large White and Laiwu Pigs

LI Ai, ZHANG Xiu-xiu, HUANG Wan-long, XIE Ling-li, MIAO Xiang-yang*   

  1. State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
  • Received:2017-12-11 Online:2018-07-23 Published:2018-07-19

Abstract:

The purpose of this study was to explore circRNAs potential role in adipose tissue, which would lay a basis for further understanding the regulation role of circRNA in fat deposition and lipid metabolism. In this study, we explored the expression profile of circRNAs in intramuscular adipose tissue from Large White and Laiwu pigs using RNA-seq and bioinformatics. The target genes to the differentially expressed circRNAs were predicted by miRanda and Targetscan. The enrichment analysis of target genes was performed by GO and KEGG. The results showed that 181 differentially expressed circRNAs were identified. Among them, 102 were up-regulated expression in intramuscular adipose tissue of Laiwu pigs, and 79 were down-regulated. GO and KEGG enrichment analysis of target genes of ssc_circ_0002807 and ssc_circ_0009352 with more miRNA binding sites were peformed. The target genes were found to be enriched in the biological process involved in lipid metabolism such as phospholipid homeostasis, cholesterol homeostasis, etc. And ssc_circ_0002807, ssc_circ_0005382, ssc_circ_0009172 and ssc_circ_0004824 were also confirmed by qRT-PCR. It is infered that ssc_circ_0002807 and ssc_circ_0009352 may regulate fat deposition and metabolism.

Key words: circRNA, intramuscular fat, fat deposition, lipid metabolism, pig

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