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Updated: Jun 20, 2026
Generation of Retinal Organoids from Healthy and Retinal Disease-Specific Human-Induced Pluripotent Stem Cells
Published on: December 9, 2022
Assembling Retinal Organoids with Microglia
Jia Xu1, Si-Jian Yu1, Zi-Bing Jin2
1Beijing Institute of Ophthalmology, Beijing Tongren Hospital, Capital Medical University.
Abstract:
Due to the limited accessibility of the human retina, retinal organoids (ROs) are the best model for studying human retinal disease, which could reveal the mechanism of retinal development and the occurrence of retinal disease. Microglia (MG) are unique resident macrophages in the retina and central nervous system (CNS), serving crucial immunity functions. However, retinal organoids lack microglia since their differentiation origin is the yolk sac. The specific pathogenesis of microglia in these retinal diseases remains unclear; therefore, the establishment of a microglia-incorporated retinal organoid model turns out to be necessary. Here, we successfully constructed a co-cultured model of retinal organoids with microglia derived from human stem cells. In this article, we differentiated microglia and then co-cultured to retinal organoids in the early stage. As the incorporation of immune cells, this model provides an optimized platform for retinal disease modeling and drug screening to facilitate in-depth research on the pathogenesis and treatment of retinal and CNS-related diseases.
Insights
Researchers developed a novel retinal organoid model incorporating human stem cell-derived microglia. This advancement enables better study of retinal diseases and drug screening by including essential immune cells missing in previous models.
Area of Science:
- * Stem cell biology
- * Neuroscience
- * Immunology
Background:
- * Human retinal organoids (ROs) are crucial for studying retinal diseases but lack microglia, essential immune cells.
- * Microglia (MG) are unique macrophages in the retina and CNS, vital for immunity.
- * The absence of microglia in ROs limits understanding of their role in retinal disease pathogenesis.
Purpose of the Study:
- * To establish a microglia-incorporated retinal organoid model.
- * To create a more accurate platform for studying retinal diseases.
- * To facilitate drug screening for retinal and CNS disorders.
Main Methods:
- * Differentiation of microglia from human stem cells.
- * Co-culture of differentiated microglia with retinal organoids in early stages.
- * Development of a microglia-integrated retinal organoid system.
Main Results:
- * Successful construction of a co-cultured retinal organoid model with human stem cell-derived microglia.
- * Integration of microglia into the retinal organoid structure.
- * Creation of an optimized platform for disease modeling and drug screening.
Conclusions:
- * The developed model overcomes the limitation of lacking microglia in traditional retinal organoids.
- * This microglia-incorporated model offers a powerful tool for investigating retinal disease mechanisms.
- * It provides an enhanced platform for therapeutic development and drug discovery in ophthalmology and neurology.
