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Updated: Feb 20, 2026
Author Spotlight: Ex Vivo OCT-Based Multimodal Imaging of Human Donor Eyes for Research into Age-Related Macular Degeneration
Published on: May 26, 2023
A Novel 3D Cultured Model for Studying Early Changes in Age-Related Macular Degeneration
Ali Shokoohmand1,2, June E Jeon1, Christina Theodoropoulos1
1Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Brisbane, 4059, Australia.
Abstract:
Various in vitro culture systems have been used to investigate the pathogenesis of age-related macular degeneration (AMD). However, many still rely on oversimplified monolayer culture models. AMD is a complex disease, associated with the pathological changes to multiple structural components such as the Bruch's membrane, retinal pigment epithelium (RPE), and choroidal endothelial cells. This study aims to construct a novel 3D coculture model using the polycaprolactone (PCL)-gelatin electrospun scaffold, with human RPE cells (hRPE) and primate choroidal cells (RF-6A). Results from this study show that PCL-gelatin scaffolds have a highly porous ultrastructure that supports the attachment, proliferation, differentiation, and migration of the hRPEs and choroidal endothelial cells. It is also demonstrated that the PCL-gelatin 3D coculture model may be useful in exploring the molecular interplay between the hPRE and the choroidal endothelial cells, and their effects on growth factor modulation, which may be important in the pathogenesis of AMD.
Insights
This study developed a novel 3D coculture model for age-related macular degeneration (AMD) research. The polycaprolactone-gelatin scaffold supports retinal pigment epithelium and choroidal cells, aiding AMD pathogenesis investigation.
Area of Science:
- Biomedical Engineering
- Ophthalmology
- Cell Biology
Background:
- Current in vitro models for age-related macular degeneration (AMD) pathogenesis often use oversimplified monolayer cultures.
- AMD involves complex pathological changes in Bruch's membrane, retinal pigment epithelium (RPE), and choroidal endothelial cells.
Purpose of the Study:
- To construct a novel 3D coculture model for investigating AMD pathogenesis.
- To utilize a polycaprolactone (PCL)-gelatin electrospun scaffold for this 3D model.
- To incorporate human RPE cells (hRPE) and primate choroidal cells (RF-6A) into the coculture system.
Main Methods:
- Fabrication of a polycaprolactone (PCL)-gelatin electrospun scaffold.
- Coculturing human RPE cells (hRPE) and primate choroidal cells (RF-6A) on the scaffold.
- Assessment of cell attachment, proliferation, differentiation, and migration within the 3D model.
Main Results:
- The PCL-gelatin scaffolds exhibited a highly porous ultrastructure.
- The scaffold effectively supported the attachment, proliferation, differentiation, and migration of both hRPE and choroidal endothelial cells.
- The 3D coculture model demonstrated potential for exploring molecular interactions between RPE and choroidal cells.
Conclusions:
- The developed PCL-gelatin 3D coculture model is a promising tool for AMD research.
- This model facilitates the study of molecular interplay crucial to AMD pathogenesis.
- Further investigation into growth factor modulation within this system is warranted for understanding AMD development.
