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Genome-wide translational analysis of the effect of acute endurance exercise on mouse gastrocnemius

ABSTRACT: Purpose: The aim of this study is to investigate the translational regulation of skeletal muscle during acute endurance exercise. Methods: We used mRNA-Seq and ribosome profiling to examine transcriptional and translational regulation, respectively. Result: There were clear distinctions between the profiles of transcription and translation even at a basal condition. TOP-motif genes were translationally suppressed immediately after the exercise. Other genes, such as Slc25a25 was significantly translationally up-regulated presumably in a mTOR-independent manner. Conclusion: There were diverse regulation between transcription and translation. Although many focused on overall protein synthesis to understand the effect of exercise, translational regulation of individual genes are required. Transcriptional and translational profiles of mouse gastrocnemius with or without acute endurance exercise were generated using Ion PGM sequencer.

ORGANISM(S): Mus musculus

SUBMITTER: Hiroaki Sako

PROVIDER: E-GEOD-69699 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Genome-Wide Analysis of Acute Endurance Exercise-Induced Translational Regulation in Mouse Skeletal Muscle.

Sako Hiroaki H Yada Koichi K Suzuki Katsuhiko K

PloS one 20160204 2

Exercise dynamically changes skeletal muscle protein synthesis to respond and adapt to the external and internal stimuli. Many studies have focused on overall protein synthesis to understand how exercise regulates the muscular adaptation. However, despite the probability that each gene transcript may have its own unique translational characteristics and would be differentially regulated at translational level, little attention has been paid to how exercise affects translational regulation of ind ...[more]

PMID: 26845575

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Genome-wide translational analysis of the effect of acute endurance exercise on mouse gastrocnemius

Project description:Purpose: The aim of this study is to investigate the translational regulation of skeletal muscle during acute endurance exercise. Methods: We used mRNA-Seq and ribosome profiling to examine transcriptional and translational regulation, respectively. Result: There were clear distinctions between the profiles of transcription and translation even at a basal condition. TOP-motif genes were translationally suppressed immediately after the exercise. Other genes, such as Slc25a25 was significantly translationally up-regulated presumably in a mTOR-independent manner. Conclusion: There were diverse regulation between transcription and translation. Although many focused on overall protein synthesis to understand the effect of exercise, translational regulation of individual genes are required.

2016-02-16 | GSE69699 | GEO

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Integrated mRNA and miRNA expression profiling in blood reveals candidate biomarkers associated with endurance exercise in horse (mRNA)

Project description:The adaptive response to extreme endurance exercise might involve transcriptional and translational regulation by microRNAs (miRNAs). Therefore, the aim of this study was to define an integrative analysis of blood transcriptome and miRNome in horses before and after a long endurance ride (160 km) using equine microarrays. A total of 2,453 genes and 162 miRNAs were found to be differentially expressed (DEG) between animals at rest and after the endurance ride. To gain understanding of the biological functions regulated by the differentially expressed miRNA, we used a hypergeometric test analysis. Notably, we detected 42 differentially expressed miRNAs that putatively regulate a total of 350 depleted DEGs, involved in glucose metabolism, fatty acid oxidation, mitochondrion biogenesis, and immune response pathways. Graphical Gaussian models in an independent validation set of animals confirmed that 4 miRNAs could be strong candidate regulatory molecules for endurance exercise adaptation. This study represents, to the best of our knowledge, the first integrated comprehensive overview of the miRNA-mRNA co-regulation networks that may play a central role in controlling post-transcriptomic regulations during endurance exercise in horses. Sixty-one Arabian or half-breed Arabian horses (20 females and 41 geldings) aged 10 Â± 2 years (Â±SEM) were recruited on voluntary basis of the owner on three 160 km endurance rides.

2016-09-04 | E-GEOD-72973 | biostudies-arrayexpress

Integrated mRNA and miRNA expression profiling in blood reveals candidate biomarkers associated with endurance exercise in horse (miRNA)

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Integrated mRNA and miRNA expression profiling in blood reveals candidate biomarkers associated with endurance exercise in horse (miRNA)

2016-09-04 | GSE73102 | GEO

Integrated mRNA and miRNA expression profiling in blood reveals candidate biomarkers associated with endurance exercise in horse (mRNA)

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Phosphoproteomics of rodent exercise models

Project description:Exercise stimulates systemic and tissue-specific adaptations that protect against lifestyle related diseases including obesity and type 2 diabetes. Exercise places high mechanical and energetic demands on contracting skeletal muscle, which require finely-tuned protein post-translational modifications involving signal transduction (e.g. phosphorylation) to elicit appropriate short- and long-term adaptive responses. To uncover the breadth of protein phosphorylation events underlying the adaptive responses to endurance exercise and skeletal muscle contraction, we performed global, unbiased mass spectrometry-based phosphoproteomic analyses of skeletal muscle from two rodent models, in situ muscle contraction in rats and treadmill-based endurance exercise in mice.

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Regulation of protein translation during mitosis

Project description:Entry into and exit from mitosis is driven by precisely-timed changes in protein abundance, and involves transcriptional regulation and protein degradation. However, the role of translational regulation in modulating cellular protein content during mitosis remains poorly understood. Here, using ribosome profiling, we show that translational, rather than transcriptional regulation is the dominant mechanism for modulating protein synthesis at mitotic entry. The vast majority of regulated mRNAs are translationally repressed, which contrasts previous findings of selective mRNA translational activation at mitotic entry. One of the most pronounced translationally repressed genes in mitosis is Emi1, an inhibitor of the anaphase promoting complex (APC), which is degraded during mitosis. We show that Emi1 degradation is insufficient for full APC activation and that simultaneous translational repression is required. These results provide a genome-wide view of protein translation during mitosis and suggest that translational repression may be used to ensure complete protein inactivation Ribosome profiling and mRNA-seq from 3 time points in the cell cycle

2015-09-01 | E-GEOD-67902 | biostudies-arrayexpress

Mechanism and transcriptional program of YB-1 in breast cancer cell lines.

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Identification of translationally deregulated proteins during inflammation

Project description:The regulation of translation is crucial for cells to rapidly adapt to changing conditions. Although the transcriptional changes under inflammatory conditions are intensely studied, not much is known about translational changes. Therefore, this study aimed at identifying translationally deregulated targets in inflammatory settings.

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