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Updated: May 16, 2026
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Single-Cell Resolution Three-Dimensional Imaging of Intact Organoids
Published on: June 5, 2020
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Whole-mount Retinal Organoid Visualization with Cellular Resolution
Marina Cunquero1, Helena Isla-Magrané2, Maria Marsal1
1ICFO-Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology.
Journal of Visualized Experiments : Jove
|July 7, 2025
Summary
Human retinal organoids, derived from stem cells, offer personalized medicine insights. New 3D imaging techniques visualize retinal cell structures, advancing disease research and therapeutic strategies.
Area of Science:
- Biomedical Engineering
- Developmental Biology
- Stem Cell Biology
Background:
- Human retinal organoids (HROs) from induced pluripotent stem cells (iPSCs) mimic retinal structure and function.
- HROs are valuable for studying retinal development, diseases, and personalized medicine.
- Characterizing complex HROs is challenging due to their 3D architecture and cellular density.
Purpose of the Study:
- To develop and apply advanced 3D imaging techniques for comprehensive HRO characterization.
- To visualize the spatial organization of retinal neurons within whole-mount HROs.
- To enhance understanding of HRO maturation and cellular distribution.
Main Methods:
- Combined optical clearing with immunolabeling for whole-mount HRO visualization.
- Utilized confocal microscopy compatible with various numerical apertures for full-volume imaging.
- Applied a clearing method that preserves 3D context for high-resolution imaging of specific regions.
Main Results:
- Successfully visualized the 3D morphology and distribution of key retinal neurons (photoreceptors, bipolar cells, ganglion cells).
- Demonstrated a method for high-resolution, full-volume imaging of complex retinal organoid structures.
- Provided insights into the spatial organization of neuronal pathways within HROs.
Conclusions:
- Optical clearing combined with immunolabeling and confocal microscopy is effective for 3D HRO analysis.
- This technique advances the study of retinal development and disease modeling using organoids.
- The findings facilitate a deeper understanding of cellular organization in retinal organoids for therapeutic applications.
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