Function-Related Protein Expression in Fuchs Endothelial Corneal Dystrophy Cells and Tissue Models

Area of Science:

• Ophthalmology
• Regenerative Medicine
• Cell Biology

Background:

• Fuchs endothelial corneal dystrophy (FECD) impairs corneal endothelial cells, leading to progressive vision loss.
• Understanding protein expression in FECD is crucial for developing effective treatments.

Purpose of the Study:

• To investigate function-related protein expression in FECD versus healthy corneal endothelial cells.
• To compare protein expression in 2D cell culture and 3D engineered tissue models.

Main Methods:

• Cultured FECD and healthy corneal endothelial cells in 2D and 3D models.
• Analyzed gene regulation for key protein families (ATP1, SLC4, SLC16, AQP, TJP, CDH).
• Assessed barrier integrity using transendothelial electrical resistance and permeability assays.
• Examined protein expression in native ex vivo FECD specimens and engineered tissues.

Main Results:

• No significant differences in gene regulation or in vitro barrier integrity between FECD and healthy cells.
• Decreased protein expression of Na+/K+-ATPase α1 subunit and monocarboxylate transporters 1 and 4 in native FECD tissues.
• Engineered FECD tissues showed restored protein levels comparable to healthy tissues.

Conclusions:

• Cell expansion and tissue engineering can generate a functional corneal endothelium from FECD cells.
• This explains the potential for regenerating a functional endothelium from non-functional FECD cells.