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Published on: March 24, 2023
Functional toxicogenomics: mechanism-centered toxicology
1Department of Nutritional Science and Toxicology, University of California Berkeley, Berkeley, California 94720, USA;
Abstract:
Traditional toxicity testing using animal models is slow, low capacity, expensive and assesses a limited number of endpoints. Such approaches are inadequate to deal with the increasingly large number of compounds found in the environment for which there are no toxicity data. Mechanism-centered high-throughput testing represents an alternative approach to meet this pressing need but is limited by our current understanding of toxicity pathways. Functional toxicogenomics, the global study of the biological function of genes on the modulation of the toxic effect of a compound, can play an important role in identifying the essential cellular components and pathways involved in toxicity response. The combination of the identification of fundamental toxicity pathways and mechanism-centered targeted assays represents an integrated approach to advance molecular toxicology to meet the challenges of toxicity testing in the 21(st) century.
Insights
Traditional animal toxicity testing is insufficient for the vast number of environmental compounds. Functional toxicogenomics offers a mechanism-centered approach to identify toxicity pathways, advancing molecular toxicology for modern needs.
Area of Science:
- Toxicology
- Genomics
- Environmental Health
Background:
- Traditional animal toxicity testing methods are slow, costly, and limited in scope.
- Existing methods cannot address the growing number of environmental compounds lacking toxicity data.
- Current high-throughput testing is hindered by incomplete understanding of toxicity pathways.
Purpose of the Study:
- To explore functional toxicogenomics as a method for identifying toxicity pathways.
- To propose an integrated approach combining pathway identification and targeted assays.
- To advance molecular toxicology for 21st-century challenges.
Main Methods:
- Utilizing functional toxicogenomics to study gene function in response to compound exposure.
- Identifying essential cellular components and pathways involved in toxicity.
- Developing mechanism-centered, targeted assays.
Main Results:
- Functional toxicogenomics can elucidate the biological basis of compound toxicity.
- Key cellular pathways involved in toxicity response can be identified.
- This approach supports the development of more effective toxicity testing.
Conclusions:
- Functional toxicogenomics is crucial for understanding toxicity mechanisms.
- An integrated strategy of pathway discovery and targeted assays is proposed.
- This approach enhances molecular toxicology to meet current testing demands.
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