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Published on: January 31, 2025
Lysosomes and autophagy in aquatic animals
Michael N Moore1, Angela Kohler, David Lowe
1Plymouth Marine Laboratory, Prospect Place, The Hoe, Plymouth, United Kingdom.
Methods in Enzymology
|February 3, 2009
Summary
Environmental pollutants harm the lysosomal-autophagic system, a key indicator of cellular health. Monitoring these reactions in aquatic animals can predict ecosystem health and human food safety risks.
Area of Science:
- Environmental Toxicology
- Cell Biology
- Eukaryotic Stress Response
Background:
- The lysosomal-autophagic system is a cellular target for environmental pollutants, accumulating toxins and impairing function.
- Lysosomal membrane integrity and autophagic reactions serve as indicators of cellular well-being and stress responses in eukaryotes.
- Adverse lysosomal-autophagic reactions correlate with toxicological responses and pathological conditions in aquatic organisms.
Purpose of the Study:
- To establish lysosomal-autophagic reactions as prognostic indicators for cellular dysfunction and health in aquatic animals.
- To develop predictive frameworks for pollutant impacts on ecosystem health and human food resources.
- To present a toolbox for predicting toxic environmental risk by coupling lysosomal-autophagic measurements with simulation modeling.
Main Methods:
- Tracking in vivo autophagy of fluorescently labeled proteins.
- Measuring degradation of radiolabeled intracellular proteins.
- Morphometric analysis of lysosomal/cytoplasmic volume ratio and lysosomal membrane stability in various animal models and tissues.
Main Results:
- Lysosomal damage and autophagic dysfunction are linked to cellular and tissue injury.
- Nutritional deprivation-induced autophagy demonstrates a protective role against reactive oxygen species (ROS).
- Lysosomal-autophagic reactions are sensitive indicators of pollutant exposure and stress in aquatic organisms.
Conclusions:
- Lysosomal-autophagic reactions provide a reliable method for assessing cellular health and predicting environmental risks.
- Monitoring these systems in bioindicator species like fish and shellfish is crucial for ecosystem health assessment.
- A combined approach of measuring lysosomal-autophagic reactions and simulation modeling offers a practical tool for environmental risk prediction.
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