Immune privilege in corneal transplantation.

Area of Science:

• Ophthalmology
• Immunology
• Transplantation Science

Background:

• Corneal transplantation is a highly successful organ transplant.
• The eye possesses a unique 'immune privilege' that facilitates graft survival.
• Understanding immune privilege is crucial for optimizing transplantation outcomes.

Purpose of the Study:

• To review the mechanisms underlying ocular immune privilege in corneal transplantation.
• To update on molecular, cellular, and neural interactions in ocular immune regulation.
• To discuss therapeutic strategies for restoring immune privilege in the eye.

Main Methods:

• Review of animal models of ocular inflammation and corneal transplantation.
• Analysis of anatomical, cellular, and molecular barriers.
• Examination of anterior chamber-associated immune deviation and regulatory T cells.
• Assessment of the immunosuppressive intraocular microenvironment.

Main Results:

• Ocular immune privilege is maintained by multiple interconnected mechanisms.
• Corneal immune privilege involves anatomical barriers, immune deviation, and an immunosuppressive microenvironment.
• Molecular, cellular, and neural factors contribute to local and systemic immune regulation.

Conclusions:

• The success of corneal transplantation is intrinsically linked to immune privilege.
• Restoring or enhancing ocular immune privilege offers therapeutic potential.
• Further research into immune privilege mechanisms can improve graft survival rates.