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Updated: Aug 6, 2026
04:41
Isolation, Culture, and Characterization of Primary Dermal Fibroblasts from Human Keloid Tissue
Published on: July 28, 2023
The Amphiregulin-EGFR Axis Drives Fibroblast Activation to Promote Keloid Progression
Enzhu Dong1,2, Jun Li3, Zhenqi Rao1,2
1Department of Dermatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
The British Journal of Dermatology
|July 22, 2026
Summary
Amphiregulin (AREG) drives keloid progression by promoting fibroblast activity and extracellular matrix production. Targeting the AREG-EGFR pathway with gefitinib shows promise for treating these challenging scars.
Area of Science:
- Dermatology
- Molecular Biology
- Pathology
Background:
- Keloids are common pathological scars with challenging treatment options.
- The underlying pathogenesis of keloids is not fully understood.
Purpose of the Study:
- To investigate the function and mechanism of Amphiregulin (AREG) in keloid formation.
- To explore AREG's role in keloid fibroblast activation and extracellular matrix production.
Main Methods:
- Transcriptomic profiling of keloid fibroblasts (KFs) and normal fibroblasts (NFs).
- In vitro experiments using recombinant AREG on KFs.
- In vivo studies utilizing keloid skin explants and a nude mouse xenograft model.
- Investigated the AREG-EGFR-MAPK signaling axis.
Main Results:
- AREG was significantly upregulated in keloids and correlated with disease severity.
- Recombinant AREG enhanced KF proliferation, migration, and extracellular matrix (ECM) production.
- AREG signaling activates keloid fibroblasts via the Epidermal Growth Factor Receptor (EGFR).
- The MAPK pathway is a key downstream mediator of AREG-EGFR signaling.
- Gefitinib, an EGFR antagonist, reduced ECM deposition in keloid models.
Conclusions:
- AREG plays a critical role in keloid progression.
- The AREG-EGFR-MAPK pathway is a key mechanism in keloid pathogenesis.
- Gefitinib demonstrates translational potential as a therapeutic agent for keloids.
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