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Updated: Jan 30, 2026

Isolation and Culture of Primary Retinal Müller Cells from Sprague-Dawley (SD) Rats
Published on: June 17, 2025
Müller cells in pathological retinal angiogenesis
Xiaorui Li1, Jing Liu2, Josephine Hoh3
1Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong, China; Taishan Medical College, Taian, China.
Abstract:
Müller cells are the major glial cells spanning the entire layer of the retina and maintaining retinal structure. Under pathological conditions, Müller cells are involved in retinal angiogenesis, a process of growing new blood vessels from pre-existing capillaries. In response to hypoxia, high glucose, and inflammation conditions, multiple signaling pathways are activated in Müller cells, followed by the increased production of proangiogenic factors including vascular endothelial growth factor, basic fibroblast growth factor, matrix metalloproteinases, Netrin-4, and angiopoietin-like 4. Expression of antiangiogenic factors is also downregulated in Müller cells. Besides, proliferation and dedifferentiation of Müller cells facilitates retinal angiogenesis. In this review, we summarized molecular mechanisms of Müller cells-related retinal angiogenesis. The potential of Müller cells as a therapeutic target for retinal angiogenesis was also discussed.
Insights
Müller cells contribute to retinal angiogenesis by producing proangiogenic factors and downregulating antiangiogenic factors, especially under pathological conditions like hypoxia. Targeting Müller cells offers a potential therapeutic strategy for retinal vascular diseases.
Area of Science:
- Ophthalmology
- Cell Biology
- Molecular Biology
Background:
- Müller cells are crucial glial cells maintaining retinal structure.
- Pathological conditions activate Müller cells, promoting retinal angiogenesis.
- Retinal angiogenesis involves the formation of new blood vessels from existing ones.
Purpose of the Study:
- To review the molecular mechanisms underlying Müller cell-mediated retinal angiogenesis.
- To discuss the role of Müller cells in pathological retinal angiogenesis.
- To explore Müller cells as potential therapeutic targets for retinal angiogenesis.
Main Methods:
- Literature review of molecular mechanisms.
- Analysis of signaling pathways in Müller cells.
- Investigation of proangiogenic and antiangiogenic factor expression.
Main Results:
- Müller cells produce proangiogenic factors (VEGF, FGF, MMPs, Netrin-4, Angptl4) in response to hypoxia, high glucose, and inflammation.
- Müller cell proliferation and dedifferentiation contribute to retinal angiogenesis.
- Expression of antiangiogenic factors is reduced in Müller cells during pathological angiogenesis.
Conclusions:
- Müller cells play a significant role in retinal angiogenesis through complex molecular signaling.
- Understanding these mechanisms highlights Müller cells as a promising therapeutic target for treating retinal vascular diseases.
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