Related Experiment Video
Updated: Aug 5, 2025
07:19
High Sensitivity 5-hydroxymethylcytosine Detection in Balb/C Brain Tissue
Published on: February 1, 2011
15.1K
Hybridization-based CpG methylation level detection using methyl-CpG-binding domain-fused luciferase.
Ayano Goto1, Wataru Yoshida2,3
1Graduate School of Bionics, Tokyo University of Technology, 1404-1 Katakuramachi, Hachioji, Tokyo, 192-0982, Japan.
Analytical and Bioanalytical Chemistry
|March 24, 2023
Summary
This study introduces a novel method for detecting DNA methylation using methyl-CpG-binding domain-fused firefly luciferase (MBD-Fluc). This technique accurately quantifies CpG methylation levels in cancer-related genes and retroelements.
Area of Science:
- Molecular Biology
- Epigenetics
- Biotechnology
Background:
- Cancer genomes exhibit distinct DNA methylation patterns, including hypermethylation of tumor-suppressor genes and global hypomethylation.
- Accurate detection of DNA methylation is crucial for understanding cancer development and progression.
Purpose of the Study:
- To develop a novel hybridization-based method for detecting CpG methylation levels.
- To utilize methyl-CpG-binding domain-fused firefly luciferase (MBD-Fluc) for quantitative methylation analysis.
Main Methods:
- Developed a method employing methylated probe oligonucleotides to capture target oligonucleotides.
- Utilized MBD-Fluc, which specifically binds to fully methylated double-stranded DNA (dsDNA).
- Quantified CpG methylation levels of SEPT9, BRCA1, and LINE-1 using this platform.
Main Results:
- The MBD-Fluc method accurately detected fully methylated dsDNA, distinguishing it from hemimethylated dsDNA.
- Emission detection signals were unaffected by the methylation state of non-hybridized overhang regions, ensuring accurate target region methylation detection.
- CpG methylation levels of SEPT9, BRCA1, and LINE-1 were successfully quantified.
Conclusions:
- The developed MBD-Fluc platform provides a sensitive and accurate method for quantifying CpG methylation.
- The platform's adaptability suggests potential for detecting other modified DNA bases, expanding its utility in epigenetics research.
