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Continuous Fluorescence-Based Endonuclease-Coupled DNA Methylation Assay to Screen for DNA Methyltransferase Inhibitors
Published on: August 5, 2022
DNA methylome alterations in chemical carcinogenesis
Igor P Pogribny1, Frederick A Beland1
1Division of Biochemical Toxicology, National Center for Toxicological Research, Jefferson, AR 72079, USA.
Cancer Letters
|September 27, 2012
Summary
DNA methylation alterations are key epigenetic events in carcinogenesis. This review examines how genotoxic and non-genotoxic carcinogens impact DNA methylation in various cancers, highlighting its potential as a biomarker.
Area of Science:
- Molecular Biology
- Cancer Research
- Epigenetics
Background:
- Carcinogenesis involves complex cellular transformations driven by genetic and epigenetic alterations.
- DNA methylation changes are a hallmark of all cancer types.
- Chemicals can induce cancer through direct DNA damage (genotoxic) or other mechanisms (non-genotoxic).
Purpose of the Study:
- To review the role of DNA methylation alterations in carcinogenesis.
- To investigate the impact of genotoxic and non-genotoxic carcinogens on DNA methylation.
- To explore the potential of epigenetic changes as biomarkers for carcinogen exposure and risk assessment.
Main Methods:
- Literature review of studies on DNA methylation and carcinogenesis.
- Analysis of data concerning genotoxic and non-genotoxic carcinogen effects.
- Synthesis of current knowledge on epigenetic alterations in specific cancer types.
Main Results:
- Genotoxic and non-genotoxic carcinogens induce significant DNA methylation changes across various cancers.
- Specific patterns of DNA methylation alterations are observed in lung, colorectal, liver, and hematologic carcinogenesis.
- Epigenetic modifications, particularly DNA methylation, are implicated in the carcinogenic process.
Conclusions:
- DNA methylation is a critical epigenetic event in chemical carcinogenesis.
- Understanding these changes can aid in identifying carcinogen exposure and assessing cancer risk.
- Epigenetic markers hold promise for early detection and prevention strategies.
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