Toxicogenomics and systems toxicology: aims and prospects

Area of Science:

• Toxicology
• Molecular Biology
• Environmental Health

Background:

• Toxicogenomics integrates molecular profiling (transcript, protein, metabolite) with conventional toxicology.
• It investigates gene-environment interactions in disease causation.
• Understanding molecular expression patterns reveals toxicant mechanisms.

Purpose of the Study:

• To highlight the evolution of toxicology towards a systems toxicology approach.
• To address challenges in discriminating the molecular basis of toxicity.
• To enable prediction of toxicant modes-of-action across species.

Main Methods:

• Transcript, protein, and metabolite profiling.
• Conventional toxicology methods.
• Analysis of molecular expression patterns.

Main Results:

• Identified how specific exposures alter molecular expression to cause disease.
• Revealed mechanisms of action for several toxicants.
• Highlighted challenges in discerning the molecular basis of toxicity.

Conclusions:

• Toxicology is advancing to systems toxicology, enabling comprehensive understanding of toxicological interactions.
• Systems toxicology facilitates prediction of toxicant effects in different species based on known responses.
• This approach enhances our ability to manage environmental stress and disease causation.