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Related Experiment Video

Updated: Aug 28, 2025

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A high-throughput microplate toxicity screening platform based on Caenorhabditis elegans.

Jiaying Wu1, Yue Gao2, Jing Xi1

  • 1School of Public Health, Hongqiao International Institute of Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.

Ecotoxicology and Environmental Safety
|September 20, 2022
PubMed
Summary

This study developed an automated platform for high-throughput toxicity testing using Caenorhabditis elegans (C. elegans) worms. The system enables rapid environmental toxicology assessment, improving upon traditional time-consuming methods.

Keywords:
Caenorhabditis elegansEnvironmental risk assessmentHigh-throughputMicrofluidicsToxicity testingWorm dispensing

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Area of Science:

  • Environmental Toxicology
  • Biotechnology
  • Neuroscience

Background:

  • Caenorhabditis elegans (C. elegans) is a key model organism for environmental toxicology.
  • Current C. elegans toxicity testing methods are often time-consuming and labor-intensive.
  • There is a need for automated, high-throughput platforms for efficient toxicity screening.

Purpose of the Study:

  • To develop an automated, highly-integrated platform for high-throughput and in situ toxicity testing using C. elegans.
  • To evaluate general toxicology and neurotoxicology endpoints relevant to environmental contaminants like metals and pesticides.
  • To enable remote operation and data analysis via a web interface ('Lab on Web').

Main Methods:

  • Integration of microfluidics for worm dispensing, automated pipetting for delivery, and high-content imaging for analysis.
  • Utilized microplates as a worm culturing system compatible with commercial instruments.
  • Developed image analysis modules for monitoring, toxicity endpoint detection, and behavioral assays.
  • Incorporated a visualized gene reporter assay for specific endpoint detection.
  • Connected the platform to the web for remote monitoring and phenotype calculation.

Main Results:

  • The platform demonstrated efficient on-demand worm dispensing, long-term maintenance, and regular monitoring.
  • Automated survival assays, behavioral analyses, and visualized gene reporter assays were successfully performed.
  • Toxicity assays using cadmium showed the platform's capability in evaluating longevity, neurotoxicity, developmental toxicity, and gst-4 expression.
  • The 'Lab on Web' feature enabled remote operation and data processing.

Conclusions:

  • The developed integrated platform offers a feasible solution for automated, high-throughput toxicity testing.
  • This system significantly enhances the efficiency of C. elegans-based toxicology assays.
  • The platform holds strong potential for future environmental risk assessment and high-throughput screening.