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GFP-LC3 High-Content Assay for Screening Autophagy Modulators.

Li Zhang¹, Jinghua Zhao¹, Wen-Xing Ding²

¹National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD, USA.

Methods in Molecular Biology (Clifton, N.J.)

|March 16, 2022

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This study presents a high-content assay to measure autophagy function. The green fluorescent protein (GFP)-LC3 assay aids in discovering compounds that modulate autophagy, crucial for cellular health and disease research.

Area of Science:

Cell Biology
Molecular Biology
Biochemistry

Background:

Autophagy is vital for cellular homeostasis.
Dysfunctional autophagy is implicated in diseases like cancer and neurodegeneration.
Developing robust assays to study autophagy is critical for therapeutic development.

Purpose of the Study:

To describe a cell-based assay for measuring autophagy.
To enable high-throughput screening for autophagy modulators.
To utilize green fluorescent protein (GFP)-LC3 in mouse embryonic fibroblasts (MEF).

Main Methods:

Establishment of a stable mouse embryonic fibroblast (MEF) cell line expressing GFP-LC3.
Implementation of a high-content screening assay.
Quantification of autophagic flux using fluorescence microscopy.

Keywords:

Autophagy GFP-LC3 cell line High-content assay

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Main Results:

The GFP-LC3 assay effectively measures autophagy function in a cell-based system.
The assay is suitable for screening large compound libraries.
Demonstrated utility in identifying potential autophagy modulators.

Conclusions:

The described GFP-LC3 assay provides a valuable tool for autophagy research.
This assay facilitates the discovery of novel therapeutic compounds targeting autophagy.
It supports the investigation of autophagy's role in various human diseases.