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Stromal-epithelial interactions in the cornea.

S E Wilson1, J J Liu, R R Mohan

  • 1Department of Ophthalmology, University of Washington, Seattle 98195-6485, USA. sewilson@u.washington.edu

Progress in Retinal and Eye Research
|April 7, 1999
PubMed
Summary
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Corneal stromal and epithelial cells communicate via growth factors like HGF and KGF, and cytokines such as IL-1. Understanding these interactions is key to regulating corneal wound healing and treating eye diseases.

Area of Science:

  • Ophthalmology
  • Cell Biology
  • Tissue Engineering

Background:

  • Stromal-epithelial interactions are crucial for corneal function, development, homeostasis, and wound healing.
  • Key mediators include hepatocyte growth factor (HGF) and keratinocyte growth factor (KGF) from stromal keratocytes, and cytokines like interleukin-1 (IL-1) from epithelial cells.

Purpose of the Study:

  • To elucidate the bidirectional communication pathways between corneal stromal and epithelial cells.
  • To explore the role of specific cytokines and growth factors in regulating corneal cell functions and wound healing.

Main Methods:

  • Review and synthesis of existing literature on corneal stromal-epithelial interactions.
  • Analysis of the roles of specific signaling molecules (HGF, KGF, IL-1, Fas ligand) in corneal physiology and pathology.

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Main Results:

  • HGF and KGF from keratocytes regulate epithelial cell proliferation, motility, and differentiation.
  • IL-1 acts as a master regulator of corneal wound healing, influencing matrix metalloproteinase production and keratocyte apoptosis.
  • The Fas/Fas ligand system impacts corneal immune privilege and apoptosis following infection or injury.

Conclusions:

  • Stromal-epithelial interactions are vital for corneal health and repair.
  • Targeting these interactions pharmacologically holds potential for treating corneal diseases and enhancing wound healing.