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Related Experiment Video

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High-throughput screening assay for the environmental water samples using cellular response profiles.

Tianhong Pan1, Haoran Li2, Swanand Khare3

  • 1School of Electrical & Information Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; Department of Chemical & Materials Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 2G6.

Ecotoxicology and Environmental Safety
|February 1, 2015
PubMed
Summary

This study introduces a novel cellular response assay using Real-Time Cellular Analyzer (RTCA) to detect unexpected toxicants and mixture effects in environmental water. The Percentage of Effect 50 (PoE50) index effectively quantifies biological activity and potential toxicity.

Keywords:
Area under the cellular response profile (AUCRP)Biological activityConcentration–response curveCytotoxicityHigh-throughput screening (HTS)

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Area of Science:

  • Environmental Science
  • Toxicology
  • Cell Biology

Background:

  • Traditional chemical and physical analyses for environmental water screening target specific substances, potentially missing unexpected toxicants and synergistic effects of mixtures.
  • Assessing biological activities at a cellular level is crucial for understanding the potential toxicity of environmental water samples.

Purpose of the Study:

  • To develop a novel assay for determining biological activities and potential toxicity of environmental water samples.
  • To establish assay criteria based on cellular responses using Real-Time Cellular Analyzer (RTCA).
  • To introduce new indices for quantifying biological activity and toxicity in water samples.

Main Methods:

  • Environmental water samples were diluted to various concentrations (80% to 10%) to generate multi-concentration cellular response profiles.
  • The area under the cellular response profile (AUCRP) was calculated for each concentration.
  • A novel biological activity index, Percentage of Effect (PoE), was developed to reflect cumulative inhibitory activity, and a synthetic index, PoE50, was proposed.

Main Results:

  • The study successfully established a method to generate multi-concentration cellular response profiles for water samples.
  • The Percentage of Effect (PoE) index effectively quantifies cumulative inhibitory activity compared to negative controls.
  • The synthetic index PoE50 demonstrated effectiveness in evaluating the intensity of biological activities in water samples.

Conclusions:

  • The proposed RTCA-based assay provides a comprehensive method for assessing biological activities and potential toxicity in environmental water.
  • The novel PoE and PoE50 indices offer a robust way to evaluate the overall biological impact of water samples.
  • This approach overcomes limitations of traditional methods by detecting unexpected toxicants and mixture effects.