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Quantitative Analysis of Autophagy using Advanced 3D Fluorescence Microscopy
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Quantitative Analysis of Autophagy using Advanced 3D Fluorescence Microscopy

Published on: May 3, 2013

Investigating autophagy: quantitative morphometric analysis using electron microscopy.

Jamie M Swanlund1, Kevin C Kregel, Terry D Oberley

  • 1Department of Pathology and Laboratory Medicine, William S. Middleton Memorial Veterans Hospital, Madison, WI, USA.

Autophagy
|November 20, 2009
PubMed
Summary
This summary is machine-generated.

Autophagy, a cellular process for degrading damaged components, is crucial for cell health and disease. This study details methods using transmission electron microscopy (EM) to visualize and quantify autophagic structures and protein localization within cells.

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Last Updated: Jun 18, 2026

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Ultrastructural Localization of Endogenous LC3 by On-Section Correlative Light-Electron Microscopy

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Area of Science:

  • Cell Biology
  • Molecular Biology
  • Cellular Homeostasis

Background:

  • Autophagy is a fundamental eukaryotic cellular process responsible for degrading damaged proteins and organelles.
  • It plays a critical role in cellular housekeeping and adaptation to stress.
  • Increasing evidence implicates autophagy in various normal cellular functions and disease processes.

Purpose of the Study:

  • To describe methodologies for localizing and quantifying subcellular areas of autophagy.
  • To present methods for subcellular protein localization using immunogold electron microscopy (EM).
  • To highlight the utility of EM in detecting early cellular homeostasis changes.

Main Methods:

  • Utilizing transmission electron microscopy (EM) to visualize and quantify autophagic structures.
  • Employing immunogold EM for the subcellular localization of specific proteins.
  • Monitoring autophagy using microtubule-associated protein light chain 3 (LC3) as a specific marker.

Main Results:

  • Detailed analysis of autophagic structures and quantification of affected areas using EM.
  • Successful subcellular localization of specific proteins, aiding in the identification of targeted degradation.
  • Demonstration of EM's capability to reveal early signs of cellular insult.

Conclusions:

  • Transmission EM and immunogold EM are powerful tools for studying autophagy at the subcellular level.
  • These methods enable precise quantification and localization of autophagic processes and protein involvement.
  • EM analysis is vital for understanding cellular homeostasis and early disease detection.