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The microRNA expression profiles changes associated with constant heat stress in porcine skeletal muscle as measured by deep sequencing

ABSTRACT: To characterize the changes of miRNAs in skeletal muscle responding to heat stress, the miRNA expression profiles of longissimus dorsi muscles of pigs raised under constant heat stress (30°C, n=8) or control temperature (22 C, n=8) for 21 days were analyzed by Illumina deep sequencing. 58 differentially expressed miRNAs were identified with 30 down-regulated and 28 up-regulated and 63 differentially expressed target genes were predicted by miRNA-mRNA joint analysis. GO and KEGG analyses showed that the genes regulated by differentially expressed miRNAs were enriched in glucose metabolism, cytoskeletal structure and function, and stress response. Real-time PCR showed that the mRNA levels of PDK4, HSP90 and DES were significantly increased whereas those of SCD and LDH-A significantly decreased by heat exposure. The protein levels of CALM, DES and HIF1α were also significantly increased by constant heat. These results demonstrated that the change of miRNA expression in porcine longissimus dorsi muscle underlie the changes of muscle structure and metabolism in porcine skeletal muscle affected by constant heat stress.

ORGANISM(S): Sus scrofa

PROVIDER: GSE75785 | GEO | 2015/12/09

SECONDARY ACCESSION(S): PRJNA305351

REPOSITORIES: GEO

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The microRNA expression profiles changes associated with constant heat stress in porcine skeletal muscle as measured by deep sequencing

Project description:To characterize the changes of miRNAs in skeletal muscle responding to heat stress, the miRNA expression profiles of longissimus dorsi muscles of pigs raised under constant heat stress (30Â°C, n=8) or control temperature (22 C, n=8) for 21 days were analyzed by Illumina deep sequencing. 58 differentially expressed miRNAs were identified with 30 down-regulated and 28 up-regulated and 63 differentially expressed target genes were predicted by miRNA-mRNA joint analysis. GO and KEGG analyses showed that the genes regulated by differentially expressed miRNAs were enriched in glucose metabolism, cytoskeletal structure and function, and stress response. Real-time PCR showed that the mRNA levels of PDK4, HSP90 and DES were significantly increased whereas those of SCD and LDH-A significantly decreased by heat exposure. The protein levels of CALM, DES and HIF1Î± were also significantly increased by constant heat. These results demonstrated that the change of miRNA expression in porcine longissimus dorsi muscle underlie the changes of muscle structure and metabolism in porcine skeletal muscle affected by constant heat stress. Characterize and compare expression profiling of the miRNA transcriptome in 2 groups of porcine skeletal muscle.

2015-12-09 | E-GEOD-75785 | biostudies-arrayexpress

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Expression data from longissimus dorsi muscle of Shaziling pig at 25-days old and longissimus dorsi musle of Yorkshire pig at 25-days old

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Comparison among longissimus dorsi muscle of 3 pig breeds, among developmental phases of Tibetan Pig

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Expression data from longissimus dorsi muscle of Shaziling pig at 25-days old and longissimus dorsi musle of Yorkshire pig at 25-days old

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2011-07-01 | E-GEOD-24689 | biostudies-arrayexpress

A global view of the complexity of the porcine transcriptome using a full-sib pair with extreme phenotypes in growth and fat deposit by deep RNA sequencing (mRNA)

Project description:Pig is an important animal model for human obesity and diseases. However, the complexity of the porcine transcriptome is not yet fully elucidated. Here we have used massively parallel high-throughput sequencing of cDNA (RNA-Seq) to generate a high-resolution map of the porcine transcriptome and miRNA in liver (LI), longissimus dorsi (LD) and abdominal fat (AF) from an F2 female full-sib pair with extreme phenotypes in growth and fat deposit. On the basis of the porcine annotated genes against the UCSC database, we identified 21,414 annotated genes in our RNA-Seq analysis and 48,045-122,931 novel transcript fragments, which could be clustered into 17,085-29,499 novel transcriptional active regions (nTARs). We found that ~18.8% of the detected known genes showed alternative splicing patterns, and alternative 3’ splicing was the most common type of alternative splicing events in pigs. We also detected that more than 22.7% of the known genes identified here were extended at their 5’ and/or 3’ end. We identified 2,796, 1,551 and 835 differentially expressed genes (DEGs), respectively, in AF, LI and LD between the two individuals. Examining the complexity of the pig transcriptome in three organs (liver, abdominal fat, longissimus dorsi muscle) from a female full-sib pair.

2011-01-12 | E-GEOD-26382 | biostudies-arrayexpress

A global view of the complexity of the porcine transcriptome using a full-sib pair with extreme phenotypes in growth and fat deposit by deep RNA sequencing (small RNA)

Project description:Pig is the important animal model for human obesity and diseases. However, the complexity of the porcine transcriptome is not yet fully elucidated. Here we have used massively parallel high-throughput sequencing of cDNA (RNA-seq) to generate a high-resolution map of the porcine miRNA in liver (LI), longissimus dorsi (LD) and abdominal fat (AF) from a F2 female full-sib pair with extreme phenotypes on growth and fat deposit. Through small RNA sequencing and on the basis of miRbase15.0, we detected a total of 184 mature miRNAs and 164 unique porcine novel miRNAs. Some conserved miRNAs, such as miR-122, miR-1, miR-206 and let-7 family showed high expression level in this study. Finally, we identified 10, 20 and 63 differentially expressed miRNAs, respectively, in LI, LD and AF. This high resolution and comprehensive transcriptome analysis significantly enhances the current genome annotation of pigs. examining the complexity of pig transcriptome in three organs from a female full-sib pair

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