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Related Concept Videos

DNA Microarrays02:34

DNA Microarrays

Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...

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Related Experiment Video

Updated: Jul 6, 2026

Genome-Wide Analysis of DNA Methylation in Gastrointestinal Cancer
07:50

Genome-Wide Analysis of DNA Methylation in Gastrointestinal Cancer

Published on: September 18, 2020

Application of microarrays for DNA methylation profiling.

Axel Schumacher1, Andreas Weinhäusl, Arturas Petronis

  • 1Epigenetics Lab, Department of Medicine II, Klinikum rechts der Isar, Technical University Munich, Munich, Germany.

Methods in Molecular Biology (Clifton, N.J.)
|March 29, 2008
PubMed
Summary

This study introduces a novel microarray method for analyzing DNA methylation patterns. This technique allows for the investigation of DNA methylation using minimal DNA amounts and offers high informativeness for understanding complex diseases.

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Area of Science:

  • Epigenetics and Molecular Biology
  • Genomics and Bioinformatics

Background:

  • Comprehensive human epigenome analysis is crucial for understanding complex diseases, aging, and biological variations.
  • Traditional DNA methylation screening methods were limited to short DNA fragments.
  • Microarray technology enables high-throughput, parallel interrogation of numerous DNA loci.

Purpose of the Study:

  • To present a novel microarray-based method for DNA methylation profiling.
  • To enable DNA methylation analysis using small DNA quantities.
  • To enhance the informativeness of DNA methylation profiling compared to existing restriction-enzyme-based strategies.

Main Methods:

  • Enrichment of unmethylated DNA fractions using methylation-sensitive restriction enzymes.
  • Adaptor ligation and PCR amplification of enriched DNA.
  • Quantitative mapping of unmethylated DNA sequences via microarrays.

Main Results:

  • The described method allows for DNA methylation pattern investigation with very small DNA amounts.
  • The approach provides relatively high informativeness compared to other restriction-enzyme-based methods.
  • Successful application of microarray analysis for DNA methylation profiling.

Conclusions:

  • The developed method offers an efficient and informative approach for DNA methylation analysis.
  • This technique has significant implications for epigenome-wide association studies and understanding disease mechanisms.
  • Microarray-based DNA methylation profiling is a powerful tool for biological research.