Limbal stem cell transplantation: current perspectives

Area of Science:

• Ophthalmology
• Regenerative Medicine
• Stem Cell Biology

Background:

• Corneal regeneration relies on limbal stem cells, crucial for maintaining the ocular surface.
• Insults to the limbus can cause limbal stem cell deficiency (LSCD), leading to conjunctivalization, vascularization, and inflammation.
• LSCD impairs the eye's ability to heal, causing persistent defects and vision loss.

Purpose of the Study:

• To review current and emerging therapeutic strategies for limbal stem cell deficiency (LSCD).
• To outline the optimization of the ocular surface prior to stem cell transplantation.
• To discuss various stem cell sources and transplantation techniques for LSCD.

Main Methods:

• Review of existing literature on LSCD treatments.
• Discussion of surgical interventions like conjunctival epitheliectomy and amniotic membrane transplantation.
• Analysis of stem cell transplantation techniques, including autologous and allogeneic options, and novel cell expansion methods.

Main Results:

• Partial LSCD may respond to conjunctival epitheliectomy with amniotic membrane transplantation.
• Severe or total LSCD necessitates stem cell transplantation for effective reepithelialization.
• Autologous stem cell transplantation generally yields the best outcomes, improving vision and quality of life.

Conclusions:

• Optimizing the ocular surface is critical before any LSCD intervention.
• Stem cell transplantation is a viable and effective treatment for LSCD.
• Future research focuses on enhancing cell expansion and exploring alternative stem cell sources.