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Related Experiment Video

Updated: Mar 1, 2026

DNA Methylation: Bisulphite Modification and Analysis
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A modified bisulfite conversion method for the detection of DNA methylation.

Hanze Wang1, Huican Ke1, Yansong Zheng2

  • 1Fujian Key Laboratory of Innate Immune Biology, Biomedical Research Center of South China, College of Life Science, Fujian Normal University Qishan Campus, 1 Keji Road, College Town, Fuzhou, Fujian 350117, China.

Epigenomics
|May 27, 2017
PubMed
Summary

This study presents a faster, 2-hour bisulfite conversion method for detecting DNA 5-methylcytosine. The optimized protocol minimizes DNA degradation and offers high conversion efficiency for research and clinical use.

Keywords:
DNA degradationDNA methylationbisulfite conversionethylene glycol dimethyl ether (DME)sodium bisulfite

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Area of Science:

  • Molecular Biology
  • Epigenetics

Background:

  • Bisulfite conversion is crucial for detecting DNA methylation.
  • Conventional methods are time-consuming and can lead to DNA degradation.

Purpose of the Study:

  • To improve conventional bisulfite conversion procedures.
  • To develop a faster and more efficient method for 5-methylcytosine detection.

Main Methods:

  • Assessed bisulfite conversion parameters (salts, temperature, antioxidants, denaturants) using methylation-sensitive melt curve analysis.
  • Validated the modified method on various genes.
  • Analyzed conversion efficiency via bisulfite sequencing.

Main Results:

  • Developed a modified bisulfite conversion method completed in 2 hours.
  • Identified high-temperature denaturation as a key factor in DNA degradation.
  • Demonstrated that ethylene glycol dimethyl ether accelerates bisulfite conversion.
  • Achieved conversion efficiency comparable to commercial kits.

Conclusions:

  • The modified bisulfite conversion method is simple, cost-effective, and time-saving.
  • The method is compatible with diverse genes and samples.
  • Offers significant potential for future research and clinical applications.