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Updated: Jun 28, 2025
Sample Preparation to Bioinformatics Analysis of DNA Methylation: Association Strategy for Obesity and Related Trait Studies
Published on: May 6, 2022
Profiling age and body fluid DNA methylation markers using nanopore adaptive sampling.
Zaka Wing-Sze Yuen1, Somasundhari Shanmuganandam2, Maurice Stanley2
1EMBL Australia Partner Laboratory Network, John Curtin School of Medical Research, The Australian National University, Canberra, Australia; The Shine-Dalgarno Centre for RNA Innovation, John Curtin School of Medical Research, The Australian National University, Canberra, Australia; The Centre for Computational Biomedical Sciences, John Curtin School of Medical Research, The Australian National University, Canberra, Australia.
This study introduces nanopore adaptive sampling for simultaneous DNA methylation analysis. This method accurately identifies age and body fluid markers, discovering new age-associated sites.
Area of Science:
- Epigenetics and Genomics
- Biomarker Discovery
- Molecular Biology
Background:
- DNA methylation is crucial for development, gene expression, and aging.
- Current methods target methylation markers individually, lacking a unified approach.
- Diverse technologies exist for methylation detection and profiling.
Purpose of the Study:
- To evaluate nanopore adaptive sampling for simultaneous identification of age and body fluid methylation markers.
- To assess the feasibility of a single technology for multiplexed methylation profiling.
- To explore novel age-associated methylation markers.
Main Methods:
- Utilized nanopore adaptive sampling for DNA methylation analysis.
- Focused on simultaneous profiling of age-associated and body fluid-specific CpG sites.
- No specialized DNA preparation or additional biochemical treatments were required.
Main Results:
- Adaptive sampling provided sufficient coverage for accurate methylation status determination.
- Results showed strong consistency with whole-genome bisulfite sequencing data.
- Confirmed known CpG markers for age and body fluid identification.
- Identified novel CpG sites strongly correlated with age.
Conclusions:
- Nanopore adaptive sampling is a feasible and effective method for multiplexed DNA methylation analysis.
- This approach supports the development of unified assays for age prediction and body fluid identification.
- Further validation and expansion of this methodology are warranted.
