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Sökning: onr:"swepub:oai:lup.lub.lu.se:499f9697-0c63-4429-a844-7d08d0035fea" > Sex influences DNA ...

Sex influences DNA methylation and gene expression in human skeletal muscle myoblasts and myotubes

Davegårdh, Cajsa (författare)
Lund University,Lunds universitet,Diabetes - epigenetik,Forskargrupper vid Lunds universitet,Diabetes - Epigenetics,Lund University Research Groups,Skåne University Hospital
Hall Wedin, Elin (författare)
Lund University,Lunds universitet,Diabetes - epigenetik,Forskargrupper vid Lunds universitet,Diabetes - Epigenetics,Lund University Research Groups,Skåne University Hospital
Broholm, Christa (författare)
Copenhagen University Hospital,University of Copenhagen
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Henriksen, Tora Ida (författare)
University of Copenhagen,Copenhagen University Hospital
Pedersen, Maria (författare)
University of Copenhagen
Pedersen, Bente Klarlund (författare)
University of Copenhagen
Scheele, Camilla (författare)
University of Copenhagen
Ling, Charlotte (författare)
Lund University,Lunds universitet,Diabetes - epigenetik,Forskargrupper vid Lunds universitet,Diabetes - Epigenetics,Lund University Research Groups,Skåne University Hospital
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 (creator_code:org_t)
BioMed Central (BMC), 2019
2019
Engelska.
Ingår i: Stem Cell Research and Therapy. - : BioMed Central (BMC). - 1757-6512. ; 10:1
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • Background: Sex differences are known to impact muscle phenotypes, metabolism, and disease risk. Skeletal muscle stem cells (satellite cells) are important for muscle repair and to maintain functional skeletal muscle. Here we studied, for the first time, effects of sex on DNA methylation and gene expression in primary human myoblasts (activated satellite cells) before and after differentiation into myotubes. Method: We used an array-based approach to analyse genome-wide DNA methylation and gene expression in myoblasts and myotubes from 13 women and 13 men. The results were followed up with a reporter gene assay. Results: Genome-wide DNA methylation and gene expression differences between the sexes were detected in both myoblasts and myotubes, on the autosomes as well as the X-chromosome, despite lack of exposure to sex hormones and other factors that differ between sexes. Pathway analysis revealed higher expression of oxidative phosphorylation and other metabolic pathways in myoblasts from women compared to men. Oxidative phosphorylation was also enriched among genes with higher expression in myotubes from women. Forty genes in myoblasts and 9 in myotubes had differences in both DNA methylation and gene expression between the sexes, including LAMP2 and SIRT1 in myoblasts and KDM6A in myotubes. Furthermore, increased DNA methylation of LAMP2 promoter had negative effects on reporter gene expression. Five genes (CREB5, RPS4X, SYAP1, XIST, and ZRSR2) showed differential DNA methylation and gene expression between the sexes in both myoblasts and myotubes. Interestingly, differences in DNA methylation and expression between women and men were also found during differentiation (myoblasts versus myotubes), e.g., in genes involved in energy metabolism. Interestingly, more DNA methylation changes occur in women compared to men on autosomes. Conclusion: All together, we show that epigenetic and transcriptional differences exist in human myoblasts and myotubes as well as during differentiation between women and men. We believe that these intrinsic differences might contribute to sex dependent differences in muscular phenotypes.

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Endokrinologi och diabetes (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Endocrinology and Diabetes (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP  -- Medicinska och farmaceutiska grundvetenskaper -- Medicinsk genetik (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Basic Medicine -- Medical Genetics (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP  -- Medicinska och farmaceutiska grundvetenskaper (hsv//swe)
MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Basic Medicine (hsv//eng)
MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine (hsv//eng)

Nyckelord

Epigenetics
Epigenome
Gender
mRNA expression
Muscle stem cells
Myoblasts
Myogenesis
Myotubes
Skeletal muscle
Transcriptome

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