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Updated: Aug 11, 2026
A Screenable In Vivo Assay for Mitochondrial Modulators Using Transgenic Bioluminescent Caenorhabditis elegans
Published on: October 16, 2015
A high-throughput screen for mitochondrial function reveals known and novel mitochondrial toxicants in a library of
Sandipan Datta1, Sunil Sahdeo1, Jennifer A Gray1
1Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, 1089 Veterinary Medicine Drive, Davis, CA, 95616, USA.
Abstract:
Mitochondrial toxicity is emerging as a major mechanism underlying serious human health consequences. This work performs a high-throughput screen (HTS) of 176 environmental chemicals for mitochondrial toxicity utilizing a previously reported biosensor platform. This established HTS confirmed known mitochondrial toxins and identified novel mitotochondrial uncouplers such as 2, 2'-Methylenebis(4-chlorophenol) and pentachlorophenol. It also identified a mitochondrial 'structure activity relationship' (SAR) in the sense that multiple environmental chlorophenols are mitochondrial inhibitors and uncouplers. This study demonstrates proof-of-concept that a mitochondrial HTS assay detects known and novel environmental mitotoxicants, and could be used to quickly evaluate human health risks from mitotoxicants in the environment.
Insights
This study screened 176 environmental chemicals for mitochondrial toxicity using a high-throughput screen (HTS). The HTS identified known toxins and novel compounds, demonstrating its utility for assessing environmental health risks.
Area of Science:
- Environmental toxicology
- Mitochondrial biology
- Chemical screening
Background:
- Mitochondrial toxicity is a significant factor in human health issues.
- Understanding environmental chemical impacts on mitochondria is crucial.
Purpose of the Study:
- To conduct a high-throughput screen (HTS) of 176 environmental chemicals for mitochondrial toxicity.
- To identify novel mitochondrial toxins and uncouplers.
- To establish a structure-activity relationship (SAR) for environmental chlorophenols.
Main Methods:
- Utilized a previously reported biosensor platform for HTS.
- Screened 176 diverse environmental chemicals.
- Analyzed results for mitochondrial inhibition and uncoupling activity.
Main Results:
- Confirmed known mitochondrial toxins.
- Identified novel mitochondrial uncouplers, including 2,2'-Methylenebis(4-chlorophenol) and pentachlorophenol.
- Observed a SAR indicating chlorophenols as mitochondrial inhibitors and uncouplers.
Conclusions:
- A mitochondrial HTS assay can effectively detect known and novel environmental mitotoxicants.
- This HTS approach provides a rapid method for evaluating human health risks associated with environmental chemicals.
- The study validates the use of biosensor platforms for environmental toxicology screening.
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