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Updated: Jul 9, 2026
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Sample Preparation to Bioinformatics Analysis of DNA Methylation: Association Strategy for Obesity and Related Trait Studies
Published on: May 6, 2022
Sequential changes in genome-wide DNA methylation status during adipocyte differentiation.
Hideki Sakamoto1, Yasushi Kogo, Jun Ohgane
1Laboratory of Cellular Biochemistry, Department of Animal Resource Sciences/Veterinary Medical Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.
Biochemical and Biophysical Research Communications
|December 8, 2007
Summary
DNA methylation changes are crucial for adipocyte differentiation. This study reveals dynamic epigenetic alterations at tissue-dependent differentially methylated regions (T-DMRs) during 3T3-L1 cell development.
Area of Science:
- Epigenetics
- Molecular Biology
- Cell Biology
Background:
- DNA methylation is a key epigenetic mechanism regulating gene expression in mammals.
- Tissue-dependent differentially methylated regions (T-DMRs) are critical for cell-specific functions.
- Adipocyte differentiation involves complex regulatory processes, including epigenetic modifications.
Purpose of the Study:
- To investigate sequential DNA methylation changes during 3T3-L1 adipocyte differentiation.
- To identify specific T-DMRs involved in the differentiation process.
- To understand the role of DNA methylation dynamics in adipogenesis.
Main Methods:
- Utilized 3T3-L1 cells at various differentiation stages (growing, confluent, postconfluent, mature adipocytes).
- Employed methylation-sensitive quantitative real-time PCR to analyze known T-DMRs.
- Applied Restriction Landmark Genomic Scanning (RLGS) to discover novel T-DMRs.
- Investigated the effect of 5-aza-2'-deoxycytidine on differentiation.
Main Results:
- Identified 8 T-DMRs with methylation changes during adipocyte differentiation.
- Observed diverse methylation patterns and stage-dependent dynamics across T-DMRs.
- Discovered 32 novel T-DMRs, indicating genome-wide epigenetic alterations.
- 5-aza-2'-deoxycytidine treatment inhibited differentiation in a stage-dependent manner.
Conclusions:
- Adipocyte differentiation involves dynamic, stage-specific epigenetic changes at T-DMRs.
- Both temporal methylation/demethylation and static states contribute to adipogenesis.
- DNA methylation profiling is essential for understanding adipocyte differentiation and its regulation.
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