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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
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Manganese-Induced Toxicity in C. elegans: What Can We Learn from the Transcriptome?
Merle M Nicolai1,2, Marcello Pirritano3, Gilles Gasparoni4
1Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaußstraße 20, 42119 Wuppertal, Germany.
International Journal of Molecular Sciences
|September 23, 2022
Summary
Manganese (Mn) overexposure triggers cellular stress responses, including oxidative damage and immune activation, in the model organism C. elegans. This study reveals key molecular pathways involved in Mn neurotoxicity, offering insights for future research.
Area of Science:
- Neuroscience
- Toxicology
- Molecular Biology
Background:
- Manganese (Mn) is essential but toxic at high levels, linked to neurological diseases.
- Molecular mechanisms of Mn-induced neurotoxicity remain largely unknown.
- Environmental Mn pollution poses increasing health risks.
Purpose of the Study:
- Investigate transcriptional responses to Mn overexposure in Caenorhabditis elegans (C. elegans).
- Identify key molecular pathways involved in Mn-induced cellular stress and damage.
- Provide a transcriptomic resource for Mn neurotoxicity research.
Main Methods:
- RNA-Seq analysis to identify differentially expressed genes (DEGs).
- Bioavailability and survival assays.
- Functional annotation of DEGs to determine affected pathways.
Main Results:
- Identified numerous DEGs in MnCl2-exposed C. elegans.
- Functional annotation implicated oxidative nucleotide damage, unfolded protein response, and innate immunity.
- Observed a time-dependent increase in transcriptional response with MnCl2 exposure.
Conclusions:
- Mn overexposure activates specific cellular stress and damage response pathways.
- Transcriptomic data provides a foundation for mechanistic studies of Mn neurotoxicity.
- Understanding these pathways is crucial for addressing environmental Mn pollution concerns.
