Identification of Differentially Expressed MiRNAs in Porcine Adipose Tissues and Evaluation of Their Effects on Feed Efficiency

Overview

Journal Genes (Basel)

Publisher MDPI

Date 2022 Dec 23

PMID 36553673

Authors

Mingxing Liao

Zhuqing Ren

Yuanxin Miao

Affiliations

Soon will be listed here.

Abstract

Feed efficiency (FE) is a very important trait affecting the economic benefits of pig breeding enterprises. Adipose tissue can modulate a variety of processes such as feed intake, energy metabolism and systemic physiological processes. However, the mechanism by which microRNAs (miRNAs) in adipose tissues regulate FE remains largely unknown. Therefore, this study aimed to screen potential miRNAs related to FE through miRNA sequencing. The miRNA profiles in porcine adipose tissues were obtained and 14 miRNAs were identified differentially expressed in adipose tissues of pigs with extreme differences in FE, of which 9 were down-regulated and 5 were up-regulated. GO and KEGG analyses indicated that these miRNAs were significantly related to lipid metabolism and these miRNAs modulated FE by regulating lipid metabolism. Subsequently, quantitative reverse transcription-polymerase chain reaction (qRT-PCR) of five randomly selected DEMs was used to verify the reliability of miRNA-seq data. Furthermore, 39 differentially expressed target genes of these DEMs were obtained, and DEMs-target mRNA interaction networks were constructed. In addition, the most significantly down-regulated miRNAs, ssc-miR-122-5p and ssc-miR-192, might be the key miRNAs for FE. Our results reveal the mechanism by which adipose miRNAs regulate feed efficiency in pigs. This study provides a theoretical basis for the further study of swine feed efficiency improvement.

Citing Articles

Identification of trait-associated microRNA modules in liver transcriptome of pig fed with PUFAs-enriched supplementary diet.

Pareek C, Sachajko M, Kalra G, Sultana S, Szostak A, Chalaskiewicz K J Appl Genet. 2024; .

PMID: 39546271 DOI: 10.1007/s13353-024-00912-w.

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