Document Detail

Altered expression of dermokine in skin disorders.
MedLine Citation:
PMID:  22646803     Owner:  NLM     Status:  Publisher    
Background  Although dermokine-β, a glycoprotein expressed in epithelial cells, does not have significant homology to other proteins, its carboxyl-terminal domain shares a high pI value with many cytokines, suggesting similar functions. Objective  To better understand the biology of dermokine, we here determined its localization under pathological conditions and examined factors that regulate its expression. Methods  We generated an anti-human dermokine-β/γ monoclonal antibody cross-reacting with the mouse protein. Using this antibody, immunohistological staining and Western blotting of dermokine-β/γ were performed with various tissue samples. Results  Although human dermokine-β/γ was expressed in almost all granular layers, upper spinous layers of the skin were also stained with anti-dermokine-β/γ antibody in inflammatory skin disorders. Dermokine-β/γ was expressed in keratoacanthoma and a part of well-differentiated squamous cell carcinoma (SCC). However, dermokine-β/γ was not detected in poorly differentiated SCC or tumours derived from non-keratinocytes. In mice, dermokine-β/γ-expressed keratinocytes were increased in models of contact hypersensitivity, ultraviolet-irradiated skin injury and wound healing. Consistent with expanded distribution in inflammatory skin diseases, proinflammatory cytokines such as interleukin-1β, interleukin-12, and tumour necrosis factor-α augmented dermokine-β/γ expression in cultured human keratinocytes. In contrast, growth factors including epidermal growth factor, insulin-like growth factor-I, keratinocyte growth factor and transforming growth factor-α significantly reduced dermokine expression. Conclusion  These results provide novel insights into the physiological and pathological significance of dermokine in the epidermis.
M Hasegawa; K Higashi; C Yokoyama; F Yamamoto; T Tachibana; T Matsushita; Y Hamaguchi; K Saito; M Fujimoto; K Takehara
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-5-31
Journal Detail:
Title:  Journal of the European Academy of Dermatology and Venereology : JEADV     Volume:  -     ISSN:  1468-3083     ISO Abbreviation:  -     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-5-31     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9216037     Medline TA:  J Eur Acad Dermatol Venereol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 The Authors. Journal of the European Academy of Dermatology and Venereology © 2012 European Academy of Dermatology and Venereology.
Department of Dermatology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan Environmental Health Science Laboratory, Sumitomo Chemical Co., Ltd., Osaka, Japan Department of Bioengineering, Graduate School of Engineering, Osaka City University, Osaka, Japan.
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