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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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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

Global DNA methylation analysis using the Luminometric Methylation Assay.

Mohsen Karimi1, Karin Luttropp, Tomas J Ekström

  • 1Department of Medicine, Karolinska University Hospital, Huddinge, Stockholm, Sweden.

Methods in Molecular Biology (Clifton, N.J.)
|September 14, 2011
PubMed
Summary
This summary is machine-generated.

Epigenetic alterations, including DNA methylation, control genome access. The Luminometric Methylation Assay (LUMA) offers a simple method to analyze global methylation levels in up to 96 samples simultaneously.

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Area of Science:

  • Epigenetics
  • Molecular Biology
  • Genomics

Background:

  • Epigenetic alterations regulate genome utilization by controlling transcription factor access.
  • DNA methylation, the methylation of cytosine in CpG dinucleotides, is a key epigenetic modification extensively studied.
  • Histone modifications like acetylation and methylation also play crucial roles in epigenetic regulation.

Purpose of the Study:

  • To introduce and describe the Luminometric Methylation Assay (LUMA) for studying global DNA methylation.
  • To highlight the utility of LUMA in analyzing methylation levels across multiple samples efficiently.

Main Methods:

  • LUMA utilizes methylation-sensitive restriction enzymes to assess DNA methylation.
  • Pyrosequencing is employed to quantify the number of enzyme cuts relative to an internal standard.
  • The assay allows for the analysis of global methylation levels.

Main Results:

  • LUMA provides a relative measurement of global methylation levels.
  • The assay is capable of analyzing up to 96 samples concurrently.
  • The method is described as simple for researchers to implement.

Conclusions:

  • The Luminometric Methylation Assay (LUMA) is an effective and scalable method for assessing global DNA methylation.
  • LUMA facilitates high-throughput analysis of methylation patterns.
  • This technique aids in understanding the role of DNA methylation in biological processes.