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Updated: Feb 27, 2026

Genome-Wide Analysis of DNA Methylation in Gastrointestinal Cancer
Published on: September 18, 2020
Epigenome dysregulation in cholangiocarcinoma
Colm J O'Rourke1, Patricia Munoz-Garrido1, Esmeralda L Aguayo1
1Biotech Research & Innovation Centre (BRIC), Department of Health and Medical Sciences, University of Copenhagen, Ole Maaløes Vej 5, 2200 Copenhagen N, Denmark.
Epigenomics research, focusing on reversible epigenetic marks, is crucial for understanding cholangiocarcinoma (CCA) development. This review highlights molecular changes like non-coding RNA interactions and DNA methylation in CCA progression.
Area of Science:
- Epigenomics
- Molecular Biology
- Oncology
Background:
- Epigenomics is rapidly advancing, with a focus on reversible epigenetic modifications.
- Clinical applications in solid tumors, particularly cholangiocarcinoma (CCA), are emerging.
- CCA exhibits a deregulated epigenetic landscape during carcinogenesis and progression, linked to genome instability.
Purpose of the Study:
- To review molecular alterations in cholangiocarcinoma (CCA) development.
- To emphasize the role of epigenetics in CCA transformation.
- To discuss key epigenetic mechanisms involved in CCA.
Main Methods:
- Literature review of molecular alterations in CCA.
- Focus on epigenetic mechanisms: non-coding RNA (ncRNA) interactions, DNA methylation, histone post-translational modifications (PTMs), and chromatin remodeling.
Main Results:
- Epigenetic deregulation is a hallmark of CCA, influencing carcinogenesis and progression.
- Aberrant ncRNA interactions contribute to genome instability in CCA.
- Altered DNA methylation patterns and histone modifications are observed in malignant cholangiocytes.
Conclusions:
- Epigenetic alterations are critical drivers in the transformation of cholangiocytes to malignant derivatives.
- Understanding these molecular changes offers potential therapeutic targets for CCA.
- Further research into the epigenetic landscape of CCA is warranted.
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