Understanding cornea epithelial stem cells and stem cell deficiency: Lessons learned using vertebrate model systems

Area of Science:

• Ophthalmology
• Stem Cell Biology
• Developmental Biology

Background:

• Corneal epithelial stem cells (CESCs) are crucial for corneal development, homeostasis, and wound healing.
• Damage or loss of CESCs leads to limbal stem cell deficiency (LSCD), causing blindness and ocular issues.

Purpose of the Study:

• To review the contributions of various vertebrate models in understanding CESCs and LSCD.
• To explore advancements in LSCD treatments and the basic biology of CESCs.

Main Methods:

• Utilized mammalian, Zebrafish, and Xenopus models to study CESCs.
• Employed cell lineage tracing studies to track CESC division and progeny fate.
• Presented preliminary findings from the Xenopus model system.

Main Results:

• Vertebrate models provide insights into CESC biology and LSCD.
• Cell lineage tracing clarifies CESC behavior during development, homeostasis, and wound healing.
• Xenopus and Zebrafish offer valuable models for studying ocular stem cells.

Conclusions:

• Understanding CESC biology is essential for advancing stem cell research.
• Improved knowledge of CESCs will lead to enhanced therapeutics for corneal diseases like LSCD.
• Diverse animal models are key to unraveling complex stem cell functions and disease mechanisms.