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Updated: Aug 5, 2026

Enhanced Reduced Representation Bisulfite Sequencing for Assessment of DNA Methylation at Base Pair Resolution
Published on: February 24, 2015
DNA methylation and demethylation as targets for anticancer therapy
1Department of Pharmacology and Therapeutics, McGill University, Montreal PQ H3G 1Y6, Canada. moshe.szyf@mcgill.ca
Abstract:
Cancer growth and metastasis require the coordinate change in gene expression of different sets of genes. While genetic alterations can account for some of these changes, it is becoming evident that many of the changes in gene expression observed are caused by epigenetic modifications. The epigenome consists of the chromatin and its modifications, the "histone code" as well as the pattern of distribution of covalent modifications of cytosines residing in the dinucleotide sequence CG by methylation. Although hypermethylation of tumor suppressor genes has attracted a significant amount of attention and inhibitors of DNA methylation were shown to activate methylated tumor suppressor genes and inhibit tumor growth, demethylation of critical genes plays a critical role in cancer as well. This review discusses the emerging role of demethylation in activation of pro-metastatic genes and the potential therapeutic implications of the demethylation machinery in metastasis.
Insights
Epigenetic changes, specifically DNA demethylation, are crucial for cancer metastasis. Understanding demethylation
Area of Science:
- Oncology
- Epigenetics
- Molecular Biology
Background:
- Cancer progression involves coordinated gene expression changes.
- Epigenetic modifications, including DNA methylation and histone modifications, significantly influence gene expression in cancer.
- While DNA methylation of tumor suppressor genes is well-studied, gene demethylation is increasingly recognized for its role in cancer.
Purpose of the Study:
- To review the emerging role of DNA demethylation in activating pro-metastatic genes.
- To discuss the therapeutic potential of targeting the demethylation machinery in cancer metastasis.
Main Methods:
- Literature review of epigenetic mechanisms in cancer metastasis.
- Analysis of studies investigating DNA demethylation and gene activation.
- Exploration of therapeutic strategies targeting demethylation pathways.
Main Results:
- Demethylation of specific genes promotes metastasis.
- The demethylation machinery is actively involved in the activation of pro-metastatic genes.
- Targeting demethylation pathways presents a potential therapeutic avenue for controlling metastasis.
Conclusions:
- DNA demethylation is a critical epigenetic mechanism driving cancer metastasis.
- The enzymes and pathways involved in demethylation are promising therapeutic targets for anti-metastasis strategies.
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