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Comprehensive DNA Methylation and Gene Expression Profiling in Differentiating Human Adipocytes
Myrthe W van den Dungen1,2, Albertinka J Murk1,3, Dieuwertje E Kok1
1Sub-Department of Environmental Technology, Wageningen University, P.O. Box 17, 6700 AA, Wageningen, The Netherlands.
Journal of Cellular Biochemistry
|April 11, 2016
Summary
DNA methylation is relatively stable during human mesenchymal stem cell differentiation into adipocytes. This suggests DNA methylation changes do not drive gene expression during this critical fat cell development process.
Area of Science:
- Biochemistry
- Molecular Biology
- Cell Biology
Background:
- Adipogenesis, or fat cell differentiation, is crucial for understanding and combating obesity.
- While transcriptional regulation is key to adipogenesis, the precise mechanisms activating gene transcription remain unclear.
Purpose of the Study:
- To investigate the role of DNA methylation in regulating gene expression during adipocyte differentiation of primary human mesenchymal stem cells (hMSCs).
Main Methods:
- Genome-wide DNA methylation analysis using the Illumina 450K BeadChip.
- Quantification of 84 adipogenic gene expression levels.
- Identification and analysis of differentially methylated regions (DMRs).
Main Results:
- 43 out of 84 adipogenic genes showed significant expression changes during differentiation.
- DMRs were found in only three of the differentially expressed genes.
- Genome-wide analysis revealed 793 significant DMRs between undifferentiated and differentiated cells, primarily in intergenic regions.
Conclusions:
- DNA methylation profiles remain largely stable during adipocyte differentiation.
- Changes in DNA methylation are unlikely to be the primary mechanism controlling gene expression in adipogenesis.
