Retinoid-induced epidermal hyperplasia is mediated by epidermal growth factor receptor activation via specific induction of its ligands heparin-binding EGF and amphiregulin in human skin in vivo

Laure Rittié, James Varani, Sewon Kang, John J. Voorhees, Gary J. Fisher

Research output: Contribution to journalArticle

Abstract

Retinoids are widely used in the treatment of photoaging to stimulate dermal repair. However, retinoids also induce epidermal hyperplasia, which can lead to excessive scaling. Scaling is the major deterrent to topical retinoid therapy. Keratinocyte growth is strongly stimulated via ligand activation of EGFR. We examined regulation of EGFR ligands by retinoids and the role of EGFR in retinoid-induced hyperplasia in human skin in vivo. Topical treatment of human skin with all-trans retinoic acid (tRA) induces EGFR ligands heparin-binding (HB)-EGF and amphiregulin (AR), and reduces betacellulin mRNA levels. Laser capture microdissection-coupled real-time reverse transcription-PCR reveals that tRA increases HB-EGF mRNA throughout the epidermis, whereas AR induction is limited to basal keratinocytes. Topical tRA activates extracellular signal-regulated kinase 1/2 (Erk1/2) downstream EGFR effectors in human skin in vivo. tRA increases the soluble forms of AR and HB-EGF proteins, and induces epidermal hyplasia, in human skin organ culture. Neutralization of HB-EGF or AR with specific antibodies strongly reduces tRA-induced epidermal hyperplasia. Finally, inhibition of EGFR activation by genistein reduces epidermal hyperplasia caused by topical retinoid treatment. These data demonstrate the central role of EGFR activation in retinoid-induced epidermal hyperplasia, and suggest that EGFR inhibitors can mitigate retinoid-induced scaling.

Original languageEnglish (US)
Pages (from-to)732-739
Number of pages8
JournalJournal of Investigative Dermatology
Volume126
Issue number4
DOIs
StatePublished - Apr 2006
Externally publishedYes

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Retinoids
Epidermal Growth Factor Receptor
Epidermal Growth Factor
Hyperplasia
Heparin
Skin
Chemical activation
Ligands
Tretinoin
Keratinocytes
Microdissection
Laser Capture Microdissection
Messenger RNA
Mitogen-Activated Protein Kinase 3
Amphiregulin
Genistein
Organ Culture Techniques
Mitogen-Activated Protein Kinase 1
Transcription
Epidermis

ASJC Scopus subject areas

  • Dermatology

Cite this

Retinoid-induced epidermal hyperplasia is mediated by epidermal growth factor receptor activation via specific induction of its ligands heparin-binding EGF and amphiregulin in human skin in vivo. / Rittié, Laure; Varani, James; Kang, Sewon; Voorhees, John J.; Fisher, Gary J.

In: Journal of Investigative Dermatology, Vol. 126, No. 4, 04.2006, p. 732-739.

Research output: Contribution to journalArticle

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