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Toxicogenomics: a pivotal piece in the puzzle of toxicological research

Elisavet T Gatzidou1, Athina N Zira, Stamatios E Theocharis

  • 1Department of Forensic Medicine and Toxicology, University of Athens, Medical School, Athens, Greece.

Journal of Applied Toxicology : JAT
|April 13, 2007
PubMed

Insights

Toxicogenomics integrates toxicology and genomics to study how toxic agents affect cellular gene expression. This field uses microarray technology for large-scale mRNA analysis, aiding mechanistic and predictive toxicology research.

Area of Science:

  • Toxicogenomics, an interdisciplinary field merging toxicology and functional genomics.
  • Focuses on the interactions between the cellular genome, environmental toxicants, and disease states.

Background:

  • Cellular responses to toxic agents involve altered gene expression patterns.
  • Gene expression is regulated through transcription (DNA to mRNA) and translation (mRNA to proteins).

Purpose of the Study:

  • To review the applications of toxicogenomics in mechanistic and predictive toxicology.
  • To discuss the limitations of toxicogenomic technologies.
  • To briefly report on complementary 'omic' approaches like proteomics and metabonomics.

Main Methods:

  • Utilizes microarray technology for large-scale detection and quantification of mRNA transcripts.
  • Analyzes alterations in mRNA stability and gene regulation.
  • Incorporates proteomics and metabonomics for broader toxicity insights.

Main Results:

  • Toxicogenomics enables large-scale analysis of gene expression changes in response to toxic agents.
  • Microarray technology facilitates the study of mRNA alterations.
  • Proteomics and metabonomics offer complementary global toxicity information.

Conclusions:

  • Toxicogenomics offers significant advantages for toxicological research, particularly in understanding mechanisms and predicting outcomes.
  • Addressing limitations through integrated 'omic' approaches enhances the comprehensive assessment of toxicity.
  • This field is crucial for advancing environmental health and safety assessments.

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