Genomics

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Whole transcriptome and miRNAome analysis of porcine muscle tissue in terms of muscle growth and development


ABSTRACT: Purpose: The aim of present research was to identify miRNAs potentially related with muscle growth in pig Methods: miRNA-seq analysis was performed on longissimus lumborum samples collected from 13 pigs representing two sire-line breeds – Pietrain and Hampshire. Based on dissection data, pigs were selected from a larger population in terms of weight of loin muscle to obtain the most extreme groups in each breed The miRNA libraries were constructed form total RNA with the use Neb Next Multiplex Small RNA Library Prep Set for Illumina (New England Biolabs) according to the protocol. The quantification of obtained libraries was performed on a Qubit 2.0 spectrophotometer (Invitrogen, Life Technologies) and a TapeStation 2200 instrument (D1000 ScreenTape; Agilent). The miRNA-seq was performed in 36 single-end cycles on HiScanSQ platform (Illumina) with the use of TruSeq SR Cluster Kit v3- CBOT-HS and TruSeq SBS Kit v 3 - HS (Illumina). Differentially expressed microRNAs were detected using the DESeq2 software while validation was performed by qPCR. Results: miRNA-seq approach allowed to identify 196 known and 149 potentially novel miRNAs in both breeds. The comparison of miRNA profiles between pig groups with different loin weight showed differential expression of 57 microRNAs for Hampshire pigs and 34 miRNAs for Pietrain pigs. Furthermore, 18 common microRNAs with differential expression were identified for both breeds tested. The Gene Ontology analysis (DIANA mirPath v.3 tool) confirmed that detected genes were involved in regulation of cell cycle, fatty acid biosynthesis, regulation of actin cytoskeleton, lysine degradation and ubiquitin mediated proteolysis. According to the KEGG Database, these DE miRNAs enrich the following pathways, i.a.: the Hippo signaling pathway, TGF-beta signaling pathway and PI3K-Akt signaling pathway. Conclusions: Obtained results allow to propose the panel of miRNAs, which can be related with porcine muscle growth and development. Such analysis can be the basis of future research in terms of identification of candidate miRNAs related with important production traits in pigs.

ORGANISM(S): Sus scrofa

PROVIDER: GSE109215 | GEO | 2018/04/23

REPOSITORIES: GEO

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