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Updated: May 1, 2026
Isolation and Culture of Primary Retinal Müller Cells from Sprague-Dawley (SD) Rats
Published on: June 17, 2025
Microglia-Müller cell interactions in the retina
1Unit on Neuron-Glia Interactions in Retinal Diseases, National Eye Institute, National Institutes of Health, 6 Center Drive, 6/215, 20892, Bethesda, MD, USA, minhua.wang@nih.gov.
Abstract:
Microglia and Müller cells are cell types that feature prominently in responses to disease and injury in the retina. However, their mutual interactions have not been investigated in detail. Here, we review evidence that indicate that these two cell populations exchange functionally significant signals under uninjured conditions and during retinal inflammation. Under normal conditions, Müller cells constitute a potential source of extracellular ATP that mediates the activity-dependent regulation of microglial dynamic process motility. Following microglial activation in inflammation, microglia can signal to Müller cells, influencing their morphological, molecular, and functional responses. Microglia-Müller cell interactions appear to be a mode of bi-directional communications that help shape the overall injury response in the retina.
Insights
Microglia and Müller cells in the retina communicate bidirectionally. This interaction, involving signals like ATP, influences retinal responses to injury and disease.
Area of Science:
- Neuroscience
- Ophthalmology
- Cell Biology
Background:
- Microglia and Müller cells are key retinal cells involved in disease and injury responses.
- The specific interactions between these two cell types remain largely unexplored.
Purpose of the Study:
- To review existing evidence on the communication between microglia and Müller cells.
- To elucidate the functional significance of their mutual signaling in both healthy and inflamed retinas.
Main Methods:
- Literature review of studies investigating microglia-Müller cell interactions.
- Analysis of signaling pathways, including extracellular ATP, involved in their communication.
Main Results:
- Müller cells release extracellular ATP, regulating microglial process motility under normal conditions.
- Activated microglia send signals to Müller cells, altering their morphology, molecular expression, and function during inflammation.
- Evidence suggests a bi-directional communication network between these cell types.
Conclusions:
- Microglia and Müller cells engage in functionally significant, bi-directional signaling.
- These interactions play a crucial role in shaping the retinal response to injury and disease.
