Epigenetic changes in leukocytes after 8 weeks of resistance exercise training
Article
Article Title | Epigenetic changes in leukocytes after 8 weeks of resistance |
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ERA Journal ID | 9750 |
Article Category | Article |
Authors | Denham, Joshua (Author), Marques, Francine Z. (Author), Bruns, Emma L. (Author), O'Brien, Brendan J. (Author) and Charchar, Fadi J. (Author) |
Journal Title | European Journal of Applied Physiology |
Journal Citation | 116 (6), pp. 1245-1253 |
Number of Pages | 9 |
Year | 2016 |
Place of Publication | Germany |
ISSN | 1439-6319 |
1439-6327 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s00421-016-3382-2 |
Web Address (URL) | https://link.springer.com/article/10.1007%2Fs00421-016-3382-2 |
Abstract | Purpose: Regular engagement in resistance exercise training elicits many health benefits including improvement to muscular strength, hypertrophy and insulin sensitivity, though the underpinning molecular mechanisms are poorly understood. The purpose of this study was to determine the influence 8 weeks of resistance exercise training has on leukocyte genome-wide DNA methylation and gene expression in healthy young men. Methods: Eight young (21.1 ± 2.2 years) men completed one repetition maximum (1RM) testing before completing 8 weeks of supervised, thrice-weekly resistance exercise training comprising three sets of 8–12 repetitions with a load equivalent to 80 % of 1RM. Blood samples were collected at rest before and after the 8-week training intervention. Genome-wide DNA methylation and gene expression were assessed on isolated leukocyte DNA and RNA using the 450K BeadChip and HumanHT-12 v4 Expression BeadChip (Illumina), respectively. Results: Resistance exercise training significantly improved upper and lower body strength concurrently with diverse genome-wide DNA methylation and gene expression changes (p ≤ 0. 01). DNA methylation changes occurred at multiple regions throughout the genome in context with genes and CpG islands, and in genes relating to axon guidance, diabetes and immune pathways. There were multiple genes with increased expression that were enriched for RNA processing and developmental proteins. Growth factor genes—GHRH and FGF1—showed differential methylation and mRNA expression changes after resistance training. Conclusions: Our findings indicate that resistance exercise training improves muscular strength and is associated with reprogramming of the leukocyte DNA methylome and transcriptome. |
Keywords | DNA methylation; Epigenome; mRNA expression; Strength training; Transcriptome |
ANZSRC Field of Research 2020 | 310505. Gene expression (incl. microarray and other genome-wide approaches) |
310504. Epigenetics (incl. genome methylation and epigenomics) | |
420702. Exercise physiology | |
Byline Affiliations | University of New England |
Federation University | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6q67/epigenetic-changes-in-leukocytes-after-8-weeks-of-resistance-exercise-training
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