Journal of Clinical Toxicology
Open Access
ISSN: 2161-0495
ISSN: 2161-0495
Commentary - (2025)Volume 15, Issue 3
Caenorhabditis elegans (C. elegans) has emerged as a powerful model organism in toxicological research and is increasingly being explored for applications in forensic science due to its short life cycle, well-characterized genetics, and strong evolutionary conservation with higher organisms. This nematode completes its life cycle in approximately four days under laboratory conditions, enabling rapid experimental turnover and cost-effective toxicological screening [1]. Its fully sequenced genome and significant genetic homology with humans (approximately 60%-80%) make it highly valuable for translational toxicology, as many biological pathways are conserved across species [2]. In addition, C. elegans possesses a completely mapped nervous system with conserved neurotransmitter signaling pathways, making it particularly suitable for studying neurotoxicity and neurodegenerative processes [3]. Its simple, quantifiable, and reproducible behavioral responses, including locomotion, feeding, and reproductive output, allow precise evaluation of toxicological effects [4]. Furthermore, the availability of transgenic strains expressing Green Fluorescent Protein (GFP), such as CL2166 (gst-4::GFP) and SJ4005 (hsp-4::GFP), has significantly expanded its use in toxicology by enabling real-time monitoring of oxidative stress and endoplasmic reticulum stress responses [5]. These strains are widely distributed through the Caenorhabditis Genetics Center (CGC), ensuring standardized experimental use across laboratories. Toxicological studies using C. elegans typically involve exposure to toxicants via liquid, solid, or gaseous routes to simulate environmental exposure conditions, and toxicity is assessed through endpoints such as survival rate, growth inhibition, reproductive capacity, developmental delay, and behavioral alterations [6]. Recent advancements have integrated high-throughput screening systems, fluorescence imaging, metabolomics, microfluidic chip technology, and CRISPR/Cas9 gene editing, which together enable detailed mechanistic investigation of toxic effects at molecular, cellular, and organismal levels [7]. In environmental forensic medicine, C. elegans has been widely applied to evaluate the toxicity of pesticides, heavy metals, nanoparticles, and organic pollutants, providing important insights into environmental contamination and its potential impact on human health [8]. These studies support environmental risk assessment and help establish correlations between pollutant exposure and biological damage, thereby contributing to forensic environmental investigations [9]. For example, exposure to trifluralin has been shown to induce oxidative stress and mitochondrial dysfunction in C. elegans, which can be evaluated through measurable physiological and behavioral endpoints such as reduced body length, altered pharyngeal pumping rate, and impaired locomotion [8]. In forensic toxicology, C. elegans is used to investigate mechanisms of addiction, neurotoxicity, and developmental toxicity, with ethanol studies identifying multiple genes associated with alcohol response, many of which have human homologs linked to addiction and metabolic disorders [9]. Additionally, it is used in genetic toxicology to assess transgenerational and multigenerational toxic effects of heavy metals and organic pollutants, where oxidative stress and epigenetic regulation are considered key mechanisms underlying inherited toxicity [10]. Observed outcomes include reproductive impairment, neuronal damage, growth inhibition, and cumulative physiological dysfunction across generations. Despite these strengths, challenges remain in standardizing methodologies and integrating C. elegans-derived data with human forensic toxicology systems. Future progress should focus on developing comprehensive databases linking metabolic and toxicological pathways from C. elegans studies with human forensic data to improve interpretability and legal applicability. Strengthening validation frameworks and improving the evidentiary value of model-derived toxicological findings will be essential for its broader adoption in forensic science. Overall, C. elegans represents a highly promising model for advancing toxicological and forensic research, offering a bridge between experimental biology and real-world toxicological applications while enhancing understanding of environmental and human toxic exposures.
Citation: Price W (2025). Applications of Caenorhabditis elegans as a Model Organism in Toxicological Research and Forensic Science: An Integrative Overview. J Clin Toxicol. 15:597.
Received: 20-May-2025, Manuscript No. JCT-25-42296; Editor assigned: 22-May-2025, Pre QC No. JCT-25-42296 (PQ); Reviewed: 05-Jun-2025, QC No. JCT-25-42296; Revised: 12-Jun-2025, Manuscript No. JCT-25-42296 (R); Published: 18-Jun-2025 , DOI: 10.35248/2475-3181.25.15.597
Copyright: © 2025 Price W. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.