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The next innovation cycle in toxicogenomics: environmental epigenetics
Stella Marie Reamon-Buettner1, Vanessa Mutschler, Juergen Borlak
1Molecular Medicine and Medical Biotechnology, Fraunhofer Institute of Toxicology and Experimental Medicine, Nikolai Fuchs Strasse 1, 30625 Hannover, Germany.
Mutation Research
|March 18, 2008
Summary
Toxicogenomics integrates toxicology and genomics to assess environmental impacts. This study explores epigenetic modifications, like DNA methylation, in mouse lung tumors to understand environmental exposure effects.
Area of Science:
- Toxicogenomics
- Epigenetics
- Genomics
Background:
- Toxicogenomics combines toxicology and functional genomics to identify adverse effects of environmental stressors and chemicals.
- Omics technologies like transcriptomics, proteomics, and metabonomics enhance toxicological data interpretation.
- Epigenetics, involving heritable gene expression changes without DNA alteration, is crucial for development and disease, including cancer.
Purpose of the Study:
- To investigate the role of epigenetic modifications in toxicogenomics.
- To understand how environmental exposures can induce epigenetic changes.
- To describe approaches for studying epigenetic modifications, specifically focusing on the tumor-suppressor gene Tslc1 in lung tumors.
Main Methods:
- Utilizing microarray technology for large-scale mRNA and microRNA transcript detection.
- Employing proteomics and metabonomics for refined toxicological data gathering.
- Studying epigenetic modifications, including DNA methylation and non-coding RNAs, in transgenic mouse models.
Main Results:
- Environmental exposures can induce epigenetic changes, potentially leading to disease or being passed to subsequent generations.
- Epigenetic mechanisms are vital for interpreting toxicological data and identifying environmental exposure effects.
- The study details approaches for analyzing epigenetic modifications of the Tslc1 gene in lung tumors from mouse models.
Conclusions:
- A comprehensive understanding of environmental genome interactions necessitates knowledge of epigenetic mechanisms.
- Routine analysis of epigenetic modifications is essential for understanding environmental exposure mechanisms of action.
- The described approaches facilitate the study of epigenetic modifications in toxicological research.
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