[Relative quantitative analysis of corneal immunogenicity]

Area of Science:

• Ophthalmology
• Immunology
• Transplantation Biology

Context:

• Corneal transplantation is a common procedure, but graft rejection remains a significant challenge.
• Understanding the immunogenicity of different corneal layers is crucial for improving graft survival.
• Current research lacks quantitative data on the relative immunogenicity of corneal epithelium, stroma, and endothelium.

Purpose:

• To quantitatively assess and compare the immunogenicity of the corneal epithelium, stroma, and endothelium.
• To determine the cellular and humoral immune responses elicited by each corneal layer.
• To provide an experimental basis for the clinical application of xenogenic corneal grafts.

Summary:

• Porcine corneal layers (epithelium, stroma, endothelium) were allografted into mice to assess cellular and humoral immunogenicity.
• Flow cytometry and ELISA revealed distinct immunogenic profiles for each layer.
• Endothelium showed the highest immunogenicity (cellular: 70.75%, humoral: 62.11%), followed by epithelium (cellular: 27.63%, humoral: 31.77%), and stroma (cellular: 1.62%, humoral: 6.12%).

Impact:

• The corneal stroma demonstrates significantly lower immunogenicity compared to the epithelium and endothelium.
• These findings suggest that corneal stroma xenografts may have a reduced risk of immune rejection.
• This research provides a foundation for exploring the therapeutic potential of corneal stroma in regenerative medicine and transplantation.