
Alexander Perfilyev
Assistant researcher

Epigenetic and Transcriptional Alterations in Human Adipose Tissue of Polycystic Ovary Syndrome
Author
Summary, in English
Genetic and epigenetic factors may predispose women to polycystic ovary syndrome (PCOS), a common heritable disorder of unclear etiology. Here we investigated differences in genome-wide gene expression and DNA methylation in adipose tissue from 64 women with PCOS and 30 controls. In total, 1720 unique genes were differentially expressed (Q < 0.05). Six out of twenty selected genes with largest expression difference (CYP1B1, GPT), genes linked to PCOS (RAB5B) or type 2 diabetes (PPARG, SVEP1), and methylation (DMAP1) were replicated in a separate case-control study. In total, 63,213 sites (P < 0.05) and 440 sites (Q < 0.15) were differently methylated. Thirty differentially expressed genes had corresponding changes in 33 different DNA methylation sites. Moreover, a total number of 1913 pairs of differentially expressed "gene-CpG" probes were significantly correlated after correction for multiple testing and corresponded with 349 unique genes. In conclusion, we identified a large number of genes and pathways that are affected in adipose tissue from women with PCOS. We also identified specific DNA methylation pathways that may affect mRNA expression. Together, these novel findings show that women with PCOS have multiple transcriptional and epigenetic changes in adipose tissue that are relevant for development of the disease.
Department/s
- Diabetes - Epigenetics
- EXODIAB: Excellence of Diabetes Research in Sweden
Publishing year
2016
Language
English
Publication/Series
Scientific Reports
Volume
6
Document type
Journal article
Publisher
Nature Publishing Group
Topic
- Obstetrics, Gynecology and Reproductive Medicine
- Medical Genetics
Status
Published
Research group
- Diabetes - Epigenetics
ISBN/ISSN/Other
- ISSN: 2045-2322