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Updated: Jun 5, 2026
11:42
Induction of Mesenchymal-Epithelial Transitions in Sarcoma Cells
Published on: April 7, 2017
Epithelial regulation of mesenchymal tissue behavior
Corrie L Gallant-Behm1, Pan Du, Simon M Lin
1Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA.
The Journal of Investigative Dermatology
|January 14, 2011
Summary
Epithelial cells significantly influence scar formation. Blocking IL-1 signaling in skin wounds prevented hypertrophic scarring, suggesting a key role for epithelial-derived factors in regulating fibroblast activity and scar development.
Area of Science:
- Wound healing research
- Tissue regeneration
- Dermatology
Background:
- Fibroproliferative scars represent a significant clinical challenge.
- The precise mechanisms governing scar formation are not fully elucidated.
- Understanding the role of epithelial-mesenchymal interactions is crucial for developing effective scar treatments.
Purpose of the Study:
- To investigate the role of the epithelium in scar formation.
- To compare epithelial responses to injury in skin versus mucosa.
- To identify molecular factors involved in scar regulation.
Main Methods:
- Paired skin and vaginal mucosal wound models in New Zealand white (NZW) rabbits.
- Microarray analysis of injured epithelium.
- Administration of IL-1 receptor antagonist to healing skin wounds.
Main Results:
- Cutaneous epithelium showed a more pronounced and prolonged response to injury than mucosal epithelium.
- Upregulation of proinflammatory cytokines and profibrotic growth factors was observed in injured skin.
- Blockade of IL-1 signaling effectively prevented hypertrophic scar formation in rabbit skin wounds.
Conclusions:
- Epithelial-derived soluble factors play a critical role in regulating fibroblast behavior and scar formation.
- Distinct epithelial responses in skin and mucosa contribute to differential scarring outcomes.
- Targeting IL-1 signaling presents a potential therapeutic strategy for preventing excessive scarring.
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