Psoriatic skin expresses the transcription factor Gli1: possible contribution of decreased neurofibromin expression

The British Journal of Dermatology
H EndoH Shinkai

Abstract

Psoriasis is a chronic inflammatory disorder of skin characterized by hyperproliferation of keratinocytes. Intracellular signalling pathways inducing the hyperproliferation of keratinocytes remain to be elucidated. An inhibitor of Hedgehog (Hh) signalling, cyclopamine, was recently reported to clear psoriatic skin lesions, suggesting involvement of the Hh signalling pathway in the hyperproliferation of lesional keratinocytes. We have previously observed activation of the Hh signalling pathway in Schwann cells of plexiform neurofibroma in neurofibromatosis type 1 (NF1), which results from functional loss of the NF1 encoding protein, neurofibromin. In psoriasis, deficiency of neurofibromin expression has been observed in lesional keratinocytes. To investigate whether the Hh signalling pathway would be activated in psoriasis and whether inhibition of neurofibromin expression would enhance the activation of the Hh signalling pathway. Activation of the Hh signalling pathway was examined by protein expression of one of the target genes, GLI1, coding for the transcription factor Gli1. Immunohistochemical studies were performed on seven psoriatic skin samples and seven control normal skin samples with a standard immunoperoxidase techni...Continue Reading

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Citations

Jun 7, 2007·Clinical Dysmorphology·Marwan Shinawi, Millan S Patel
Aug 10, 2007·Journal of Medicinal Chemistry·Jarrett R RemsbergNadya I Tarasova
Jun 13, 2015·The Journal of Investigative Dermatology. Symposium Proceedings·Xiao-Yong Man, Min Zheng
Aug 30, 2008·The Journal of Investigative Dermatology·Johann E GudjonssonJames T Elder
Feb 2, 2017·International Journal of Molecular Sciences·Xingchen ZhouXiang Chen
Jul 2, 2009·Expert Opinion on Therapeutic Patents·Alexander M Abdelnoor

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