Cited by 94Ovarian function and disordersEpigenetics and DNA MethylationMetabolism, Diabetes, and Cancer

Transcriptional and epigenetic changes influencing skeletal muscle metabolism in women with polycystic ovary syndrome

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Nilsson, Emma, Benrick, Anna, Kokosar, Milana, Krook, Anna, Lindgren, Eva, Källman, Thomas, Martis, Mihaela M, Højlund, Kurt +2 more·2018·The Journal of Clinical Endocrinology & Metabolism

Abstract

Context: Insulin resistance in skeletal muscle is a major risk factor for the development of type 2 diabetes in women with polycystic ovary syndrome (PCOS). Despite this, the mechanisms underlying insulin resistance in PCOS are largely unknown. Objective: To investigate the genome-wide DNA methylation and gene expression patterns in skeletal muscle from women with PCOS and controls and relate them to phenotypic variations. Design/Participants: In a case-control study, skeletal muscle biopsies from women with PCOS (n = 17) and age-, weight-, and body mass index‒matched controls (n = 14) were analyzed by array-based DNA methylation and mRNA expression profiling. Results: Eighty-five unique transcripts were differentially expressed in muscle from women with PCOS vs controls, including DYRK1A, SYNPO2, SCP2, and NAMPT. Furthermore, women with PCOS had reduced expression of genes involved in immune system pathways. Two CpG sites showed differential DNA methylation after correction for multiple testing. However, an mRNA expression of ∼30% of the differentially expressed genes correlated with DNA methylation levels of CpG sites in or near the gene. Functional follow-up studies demonstrated that KLF10 is under transcriptional control of insulin, where insulin promotes glycogen accumulation in myotubes of human muscle cells. Testosterone downregulates the expression levels of COL1A1 and MAP2K6. Conclusion: PCOS is associated with aberrant skeletal muscle gene expression with dysregulated pathways. Furthermore, we identified specific changes in muscle DNA methylation that may affect gene expression. This study showed that women with PCOS have epigenetic and transcriptional changes in skeletal muscle that, in part, can explain the metabolic abnormalities seen in these women.

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Authors
Nilsson, E., Benrick, A., Kokosar, M., Krook, A., Lindgren, E., Källman, T., Martis, M. M., Højlund, K., Ling, C., & Stener-Victorin, E.
Affiliations
  • Lund University (SE)
  • University of Skövde (SE)
  • University of Gothenburg (SE)
  • Karolinska Institutet (SE)
  • Uppsala University (SE)
  • Linköping University (SE)
  • Department of Endocrinology, Odense University, Odense C, Denmark
  • Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
2018-08-02
Volume
103
Issue
12
Pages
4465-4477
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W2885250903
Cited by
93
References
48
Citations by year
2026: 9 · 2025: 12 · 2024: 7 · 2023: 19 · 2022: 15 · 2021: 12 · 2020: 10 · 2019: 8 · 2018: 1
FWCI
8.27
Type
journal article
Language
en
Open access
Licence
other-oa
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion, other-oa)
  • PubMed (publishedVersion)
  • University Library of Skövde (University of Skövde) (submittedVersion, other-oa)
  • Lund University Publications (Lund University) (submittedVersion)
  • University of Southern Denmark Research Portal (University of Southern Denmark) (submittedVersion, other-oa)
Funders
  • Vetenskapsrådet (2014-2775, 2016-02486)
  • Jane and Dan Ohlsson Foundation
  • Adlerbert Research Foundation
  • Novo Nordisk Fonden (NNF17OC002672)
  • Karolinska Institutet
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Ovarian function and disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
Keywords
polycystic ovary syndrome, skeletal muscle, insulin resistance, DNA methylation, gene expression, epigenetics, type 2 diabetes risk, KLF10, glycogen accumulation, testosterone, COL1A1, MAP2K6, immune pathways, myotubes
MeSH terms
Collagen Type I, alpha 1 Chain, Adult, Biopsy, Cells, Cultured, Female, Follow-Up Studies, Glycogen, Humans, Insulin, Insulin Resistance, Polycystic Ovary Syndrome, Testosterone, Down-Regulation, Case-Control Studies, Muscle, Skeletal, Muscle Fibers, Skeletal, CpG Islands, DNA Methylation, Gene Expression Profiling, Collagen Type I, Epigenesis, Genetic, MAP Kinase Kinase 6, Kruppel-Like Transcription Factors, Early Growth Response Transcription Factors, Primary Cell Culture

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