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Related Experiment Video

Updated: Oct 19, 2025

Quantifying Tissue-Specific Proteostatic Decline in Caenorhabditis elegans
09:18

Quantifying Tissue-Specific Proteostatic Decline in Caenorhabditis elegans

Published on: September 7, 2021

3.0K

Quantifying Tissue-Specific Proteostatic Decline in Caenorhabditis elegans.

Maria I Lazaro-Pena1, Adam B Cornwell1, Andrew V Samuelson2

  • 1Department of Biomedical Genetics, University of Rochester Medical Center.

Journal of Visualized Experiments : Jove
|September 27, 2021
PubMed
Summary

Aging impairs protein homeostasis, leading to age-associated diseases. This study uses Caenorhabditis elegans models to quantify age-related protein aggregation and functional decline, offering insights into aging mechanisms.

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Methods to Study Changes in Inherent Protein Aggregation with Age in Caenorhabditis elegans
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Related Experiment Videos

Last Updated: Oct 19, 2025

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Methods to Study Changes in Inherent Protein Aggregation with Age in Caenorhabditis elegans
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Methods to Study Changes in Inherent Protein Aggregation with Age in Caenorhabditis elegans

Published on: November 26, 2017

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Area of Science:

  • * Molecular Biology
  • * Gerontology
  • * Neuroscience

Background:

  • * Protein homeostasis (proteostasis) declines with age, contributing to age-associated diseases like Huntington's disease.
  • * Polyglutamine (polyQ) expansion proteins are prone to aggregation, impacting cellular function.
  • * Transgenic Caenorhabditis elegans (C. elegans) models expressing polyQ fused to yellow fluorescent protein (polyQ::YFP) are crucial for studying proteostasis decline.

Purpose of the Study:

  • * To describe methods for quantifying age-associated proteome deterioration in C. elegans using polyQ::YFP models.
  • * To assess the onset of protein aggregation and behavioral defects in specific tissues (neurons, muscle).
  • * To explore higher-throughput adaptations and future applications of this model system for aging research.

Main Methods:

  • * Utilizing transgenic C. elegans expressing polyQ::YFP to visualize and quantify protein aggregate (foci) formation in vivo.
  • * Employing tissue-specific promoters to drive transgene expression in neurons or body wall muscle.
  • * Measuring locomotion defects correlated with protein aggregation as a functional readout of proteostasis collapse.

Main Results:

  • * Progressive formation of polyQ::YFP fluorescent foci indicates age-dependent protein aggregation.
  • * Aggregation correlates with the onset of locomotion deficits in aging C. elegans.
  • * The model allows for tissue-specific analysis of proteostasis and its impact on behavior.

Conclusions:

  • * The polyQ::YFP C. elegans model provides a quantitative approach to study aging and proteostasis.
  • * This method complements traditional lifespan assays by focusing on functional decline and aggregation.
  • * The model is adaptable for high-throughput screening and future genetic analyses in aging research.