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Related Concept Videos

Epigenetic Regulation01:46

Epigenetic Regulation

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Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
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Related Experiment Video

Updated: Sep 24, 2025

Enhanced Reduced Representation Bisulfite Sequencing for Assessment of DNA Methylation at Base Pair Resolution
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DNA methylation as a diagnostic tool.

Kristyn Galbraith1, Matija Snuderl2,3

  • 1Department of Pathology, New York University School of Medicine, New York, NY, 10016, USA.

Acta Neuropathologica Communications
|May 8, 2022
PubMed
Summary

DNA methylation, an epigenetic mark, aids in regulating gene expression and classifying tumors. This review explores its diagnostic applications in oncology, including copy number variation and immune infiltrate assessment.

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Last Updated: Sep 24, 2025

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Area of Science:

  • Epigenetics
  • Genomics
  • Oncology

Background:

  • DNA methylation is a key epigenetic mark regulating gene expression.
  • Methylation patterns are tissue-specific, stable, and change during cancer development.
  • DNA methylation is emerging as a powerful tool for tumor classification.

Purpose of the Study:

  • To review the role of DNA methylation in tumor diagnosis.
  • To highlight its utility beyond classification, including copy number variation and tumor microenvironment assessment.
  • To discuss its potential as a biomarker for immunotherapy.

Main Methods:

  • Review of existing literature on DNA methylation in cancer diagnosis.
  • Analysis of DNA methylation data for tumor classification.
  • Exploration of methylation-based biomarkers for clinical applications.

Main Results:

  • DNA methylation patterns provide developmental and mutation-driven signatures for tumor classification.
  • Methylation analysis can evaluate copy number variations and gene promoter status (e.g., MGMT, MLH1).
  • Deconvolution of the tumor microenvironment, including immune infiltrate, is feasible using DNA methylation data.

Conclusions:

  • DNA methylation is a versatile tool with significant diagnostic and prognostic value in oncology.
  • Its application extends to personalized medicine, including immunotherapy biomarker identification.
  • Further research into DNA methylation signatures will enhance precision oncology.