Current methodology and cell sources for lacrimal gland tissue engineering

Area of Science:

• Ophthalmology
• Regenerative Medicine
• Tissue Engineering

Background:

• Aqueous tears are crucial for ocular surface health, and their deficiency can lead to severe complications like corneal ulceration and vision loss.
• Current treatments for dry eye disease provide only temporary symptom relief without addressing lacrimal gland function.
• Irreversible lacrimal gland damage is the cause of aqueous deficiency dry eye disease.

Purpose of the Study:

• To review cellular resources for lacrimal gland regeneration.
• To compare in situ stem cell therapy with induced pluripotent stem cell (iPSC)-derived organoid transplantation for treating dry eye disease.
• To explore the development of functional artificial lacrimal glands.

Main Methods:

• Review of existing studies on stem cell applications in lacrimal gland repair.
• Comparison of in situ regeneration strategies using native stem cells within the tissue.
• Evaluation of tissue engineering approaches involving iPSC-derived organoids for transplantation.

Main Results:

• In situ regeneration is feasible for partial lacrimal gland damage using stem cells.
• Organoid transplantation derived from iPSCs offers a potential solution for total gland damage.
• Both approaches aim to restore lacrimal gland function and improve ocular surface health.

Conclusions:

• Regenerative medicine, utilizing stem cells and iPSC-derived organoids, presents a promising therapeutic avenue for aqueous deficiency dry eye disease.
• Further research into cellular resources and tissue engineering is essential for developing effective artificial lacrimal glands.
• These advanced strategies hold the potential to move beyond palliation towards functional restoration of the lacrimal gland.