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Updated: May 11, 2026
A Simple Method for High Throughput Chemical Screening in Caenorhabditis Elegans
Published on: March 20, 2018
An ultra high-throughput, whole-animal screen for small molecule modulators of a specific genetic pathway in
Chi K Leung1, Ying Wang, Siobhan Malany
1Department of Biology and Genetics Institute, University of Florida, Gainesville, Florida, United States of America.
Abstract:
High-throughput screening (HTS) is a powerful approach to drug discovery, but many lead compounds are found to be unsuitable for use in vivo after initial screening. Screening in small animals like C. elegans can help avoid these problems, but this system has been limited to screens with low-throughput or no specific molecular target. We report the first in vivo 1536-well plate assay for a specific genetic pathway in C. elegans. Our assay measures induction of a gene regulated by SKN-1, a master regulator of detoxification genes. SKN-1 inhibitors will be used to study and potentially reverse multidrug resistance in parasitic nematodes. Screens of two small commercial libraries and the full Molecular Libraries Small Molecule Repository (MLSMR) of ∼364,000 compounds validate our platform for ultra HTS. Our platform overcomes current limitations of many whole-animal screens and can be widely adopted for other inducible genetic pathways in nematodes and humans.
Insights
This study introduces a novel in vivo 1536-well plate assay in C. elegans for ultra high-throughput screening (HTS). This platform enables efficient drug discovery by assessing compounds targeting specific genetic pathways, overcoming limitations of previous whole-animal screens.
Area of Science:
- Pharmacology
- Genetics
- Nematology
Background:
- High-throughput screening (HTS) in drug discovery often yields compounds unsuitable for in vivo application.
- Whole-animal screening in model organisms like C. elegans is challenging due to low throughput and lack of specific molecular targets.
Purpose of the Study:
- To develop the first in vivo 1536-well plate assay for ultra-high-throughput screening (uHTS) in C. elegans.
- To establish a platform for identifying modulators of the SKN-1 regulated genetic pathway.
- To facilitate drug discovery for reversing multidrug resistance in parasitic nematodes.
Main Methods:
- Development of an in vivo 1536-well plate assay in C. elegans.
- Measurement of gene induction regulated by SKN-1, a key regulator of detoxification genes.
- Screening of commercial compound libraries and the Molecular Libraries Small Molecule Repository (MLSMR).
Main Results:
- Successful implementation of the first in vivo 1536-well plate assay for C. elegans.
- Validation of the platform through screening of approximately 364,000 compounds from the MLSMR.
- Demonstration of the assay's capability for ultra-high-throughput screening.
Conclusions:
- The developed platform overcomes limitations of traditional whole-animal screening methods.
- This assay is adaptable for screening other inducible genetic pathways in nematodes and potentially humans.
- The platform holds significant potential for accelerating drug discovery, particularly for parasitic nematode infections.
