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Tissue engineered scaffolds for corneal endothelial regeneration: a material's perspective
Jasper Delaey1, Lobke De Vos1, Carina Koppen2,3
1Polymer Chemistry & Biomaterials Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Ghent, Belgium.
Biomaterials Science
|March 28, 2022
Summary
Tissue engineered scaffolds offer a promising alternative to donor corneas for treating corneal diseases. This review examines scaffold materials and characterization methods to guide the development of functional endothelial grafts.
Area of Science:
- Biomaterials Science
- Ophthalmology
- Tissue Engineering
Background:
- Corneal diseases often necessitate donor corneas for treatment.
- Limited donor cornea availability (1:70 ratio) drives research into alternatives.
- Tissue engineered scaffolds seeded with corneal endothelial cells are a key alternative approach.
Purpose of the Study:
- To review and critically assess materials for tissue engineered corneal endothelial grafts.
- To evaluate methods for characterizing scaffold properties like thickness, permeability, transparency, and mechanical strength.
- To propose a standardized approach for scaffold characterization to advance research.
Main Methods:
- Literature review of natural, semi-synthetic, and synthetic polymers for scaffolds.
- Analysis of existing studies on scaffold suitability and characterization techniques.
- Examination of natural tissues (amniotic membrane, lens capsule) used in previous research.
Main Results:
- Various materials have been investigated as potential scaffold substrates.
- Essential scaffold properties (biocompatibility, mechanical strength, transparency) are crucial for functional endothelium formation.
- Current characterization methods vary, hindering direct comparison of different research findings.
Conclusions:
- Standardized characterization is needed for scientifically sound comparison of corneal scaffolds.
- This will accelerate the development of optimal tissue engineered endothelial grafts.
- The review provides a framework for future research in corneal regenerative medicine.

