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Updated: May 31, 2026
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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
Toxicity assay for deoxynivalenol using Caenorhabditis elegans
Y Gowrinathan1, J C Pacan, A Hawke
1Guelph Food Research Centre, 93 Stone Road, West, Guelph, ON, Canada, N1G 5C9.
Summary
Deoxynivalenol (DON) exposure significantly impacts Caenorhabditis elegans development and reproduction. A sensitive C. elegans mutant strain shows promise as an animal model for DON toxicity testing.
Area of Science:
- Toxicology
- Nematology
- Mycotoxicology
Background:
- Deoxynivalenol (DON) is a prevalent mycotoxin produced by Fusarium species.
- DON poses risks to human and animal health through contaminated food and feed.
- Understanding DON toxicity mechanisms requires robust model organisms.
Purpose of the Study:
- To investigate the effects of deoxynivalenol (DON) on the progeny production and development rates of Caenorhabditis elegans.
- To evaluate the utility of C. elegans wild-type and mutant strains as models for DON toxicity assessment.
Main Methods:
- Exposure of C. elegans (wild-type N2 and mutant AU1) to purified DON and crude extract from Fusarium graminearum.
- Quantification of brood size and larval development rates (egg to adulthood).
- Statistical analysis using Tukey-HSD (p<0.05) to determine significant effects.
Main Results:
- Both C. elegans strains exhibited reduced brood size and slower larval development rates upon exposure to purified DON (500 and 1000 µg ml(-1)).
- Exposure to crude extract containing 250 µg ml(-1) DON resulted in inhibited egg hatching and significantly decreased development rates.
- The mutant AU1 strain displayed heightened sensitivity to DON compared to the wild-type N2 strain.
Conclusions:
- Deoxynivalenol (DON) significantly impairs Caenorhabditis elegans reproduction and development.
- C. elegans, particularly sensitive mutant strains, can serve as a valuable animal model for DON toxicity assays.
- Further research into C. elegans as a model organism can enhance the understanding of DON toxicology.
