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Related Experiment Video

Updated: Nov 15, 2025

Assessment of de novo Protein Synthesis Rates in Caenorhabditis elegans
06:27

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Fluorescent Polysome Profiling in Caenorhabditis elegans.

Daniel Shaffer1, Jarod A Rollins1

  • 1Mount Desert Island Biological Laboratory, Salisbury Cove, ME, USA.

Bio-Protocol
|March 4, 2021
PubMed
Summary

This study introduces fluorescent polysome profiling in C. elegans to analyze gene regulation at the protein translation level. This method isolates actively translated mRNA and quantifies global translation rates, offering new insights into post-transcriptional control.

Keywords:
C. elegansFluorescencePolysome profilingRibosomeSelective translation

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Background:

  • Gene regulation is crucial for cellular function and is controlled at multiple levels, including transcription and translation.
  • Protein translation, specifically the recruitment of mRNA to actively translating ribosomes (polysomes), is a key regulatory point.
  • Traditional polysome profiling relies on RNA absorbance, limiting its scope.

Purpose of the Study:

  • To detail a fluorescent polysome profiling protocol for C. elegans.
  • To enable the isolation of actively translated mRNA for post-transcriptional regulation analysis.
  • To quantify global translation rates and identify ribosomal binding partners.

Main Methods:

  • Polysome profiling to separate unbound ribosomal subunits, monosomes, and polysomes.
  • Utilizing fluorescent detection in addition to RNA absorbance for enhanced polysome visualization.
  • Application in C. elegans for detailed molecular analysis.

Main Results:

  • Successful isolation of actively translated mRNA.
  • Quantification of global translation rates by assessing polysome proportions.
  • Detection and quantification of fluorescently tagged proteins associated with polysomes.

Conclusions:

  • Fluorescent polysome profiling offers a powerful, sensitive method for studying translational control in C. elegans.
  • This technique enhances the ability to identify post-transcriptional regulatory mechanisms.
  • It provides a comprehensive approach to understanding gene expression at the translational level.