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A High-throughput Assay for the Prediction of Chemical Toxicity by Automated Phenotypic Profiling of Caenorhabditis elegans
Published on: March 14, 2019
7.8K
The C. elegans model in toxicity testing
1Division of Applied Toxicology, Laurel, MD, USA.
Journal of Applied Toxicology : JAT
|July 23, 2016
Summary
Caenorhabditis elegans toxicity assays offer a cost-effective whole-animal model for predictive toxicology. These assays correlate well with mammalian toxicity data, supporting their use in early safety testing.
Area of Science:
- Toxicology
- Nematology
- Biomedical Science
Background:
- Caenorhabditis elegans (C. elegans) is a small nematode suitable for low-cost in vitro toxicity testing.
- Unlike cell cultures, C. elegans provides whole-animal data reflecting intact physiological systems.
- Conservation of toxic action modes between C. elegans and mammals is frequently observed.
Purpose of the Study:
- To review the application of C. elegans in toxicity assays.
- To evaluate the strengths and limitations of C. elegans as a predictive toxicology model.
- To discuss the importance of good C. elegans culture practice (GCeCP).
Main Methods:
- Review of published literature on C. elegans toxicity assays.
- Analysis of correlation between C. elegans toxicity ranking and mammalian LD50 values.
- Examination of conserved toxicological pathways.
Main Results:
- C. elegans toxicity ranking screens show high predictability for rat LD50 ranking, comparable to mouse LD50 ranking.
- Significant conservation in the mode of toxic action between C. elegans and mammals.
- GCeCP is critical for obtaining reliable and reproducible results.
Conclusions:
- C. elegans assays are valuable for early safety testing and integrated toxicity strategies.
- While C. elegans offers predictive power, it does not fully replace mammalian data for hazard evaluation.
- Standardized culture practices are essential for the validity of C. elegans toxicity data.
