The anterior lens capsule used as support material in RPE cell-transplantation

Area of Science:

• Ophthalmology
• Regenerative Medicine
• Biomaterials Science

Background:

• Retinal pigment epithelium (RPE) transplantation is a potential therapy for retinal diseases.
• Scaffolds are crucial for successful RPE cell engraftment and function.
• Identifying suitable biomaterials for RPE support is an ongoing research area.

Purpose of the Study:

• To evaluate ocular basement membranes as potential support materials for transplanted porcine RPE cells.
• To compare the efficacy of different basement membrane preparations and synthetic materials for RPE cell culture.

Main Methods:

• Porcine RPE cells were cultured on bovine corneal extracellular matrix (ECM), bovine and porcine lens capsules, and tissue culture plastic.
• Cell morphology and density were assessed using phase contrast and transmission electron microscopy.
• Porcine anterior lens capsule grafts were transplanted into the subretinal space of pigs for in vivo evaluation.

Main Results:

• RPE cells cultured on porcine anterior lens capsule and ECM exhibited superior morphology and higher cell density compared to those on plastic or bovine anterior lens capsule.
• Successful transplantation of porcine anterior lens capsule into the subretinal space was achieved.
• The subretinal implants were well-tolerated within a two-week observation period.

Conclusions:

• The porcine anterior lens capsule demonstrates significant potential as a biomaterial scaffold for RPE cell transplantation.
• Further investigation into lens capsule-based RPE transplantation may offer a viable therapeutic strategy for retinal conditions.