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Updated: Mar 12, 2026

Assessing Retinal Microglial Phagocytic Function In Vivo Using a Flow Cytometry-based Assay

Assessing Retinal Microglial Phagocytic Function In Vivo Using a Flow Cytometry-based Assay

Published on: October 18, 2016

Assessing Retinal Microglial Phagocytic Function In Vivo Using a Flow Cytometry-based Assay.

Salome Murinello¹, Stacey K Moreno², Matthew S Macauley³

¹Department of Cell and Molecular Biology, The Scripps Research Institute; smuri@scripps.edu.

Journal of Visualized Experiments : Jove

|November 3, 2016

Summary

Researchers developed a new flow cytometry method to easily measure microglial phagocytosis in vivo. This technique precisely quantifies microglial function, aiding research into neurodegenerative diseases.

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Author Spotlight: Advancing Understanding Through Technological Innovations in Psychoneuroimmunology

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Last Updated: Mar 12, 2026

Assessing Retinal Microglial Phagocytic Function In Vivo Using a Flow Cytometry-based Assay

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Published on: October 18, 2016

In Vivo Dynamics of Retinal Microglial Activation During Neurodegeneration: Confocal Ophthalmoscopic Imaging and Cell Morphometry in Mouse Glaucoma

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Published on: May 31, 2024

Area of Science:

Neuroscience
Immunology
Cell Biology

Background:

Microglia are crucial for central nervous system (CNS) homeostasis, performing phagocytosis of cellular debris and pathogens.
Impaired microglial phagocytosis is linked to neurodegenerative diseases like Alzheimer's and age-related macular degeneration.
Assessing microglial phagocytic function in vivo has been historically challenging.

Purpose of the Study:

To develop and validate a robust, in vivo method for quantifying microglial phagocytic potential.
To offer a more efficient alternative to traditional, labor-intensive techniques.

Main Methods:

Intravitreal delivery of fluorescently labeled particles into the eyes of live rodents.
Quantification of particle uptake by retinal microglia using flow cytometry.
Comparison with conventional immunohistochemical staining and imaging methods.

Main Results:

The developed flow cytometry technique allows for precise and rapid (under six hours) measurement of microglial phagocytosis.
This method significantly reduces the complexity and time associated with traditional approaches.
The procedure is adaptable for assessing the impact of compounds on microglial phagocytosis.

Conclusions:

This novel flow cytometry method provides a simple, robust, and efficient way to monitor and quantify in vivo microglial phagocytic function.
The technique is applicable beyond vision research and can advance the study of CNS diseases.
This method facilitates the investigation of therapeutic interventions targeting microglial phagocytosis.