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Overexpression of Psoriasin (S100A7) Contributes to Dysregulated Differentiation in Psoriasis.
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- Ekman, Anna-Karin (author)
- Linköpings universitet,Avdelningen för neuro- och inflammationsvetenskap,Medicinska fakulteten,Region Östergötland, Hudkliniken i Östergötland,Ingrid Asp Psoriasis Research Center
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- Vegfors, Jenny (author)
- Linköpings universitet,Avdelningen för neuro- och inflammationsvetenskap,Medicinska fakulteten,Region Östergötland, Hudkliniken i Östergötland,Ingrid Asp Psoriasis Research Center
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- Bivik, Cecilia, 1978- (author)
- Linköpings universitet,Avdelningen för cellbiologi,Medicinska fakulteten,Ingrid Asp Psoriasis Research Center
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- Society for the Publication of Acta Dermato - Venereologica, 2017
- 2017
- English.
- In: Acta Dermato-Venereologica. - : Society for the Publication of Acta Dermato - Venereologica. - 0001-5555 .- 1651-2057. ; 97:4, s. 441-448
- Journal article (peer-reviewed)
Abstract
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- Psoriasin, which is highly expressed in psoriasis, is encoded by a gene located within the epidermal differentiation complex. The aim of this study was to investigate the effect of endogenous psoriasin on disturbed keratinocyte differentiation in psoriasis. Immunohistochemical staining revealed a gradient of psoriasin expression in the psoriatic epidermis with highest expression in the suprabasal, differentiated layers. Induction of keratinocyte differentiation caused concurrent expression of psoriasin and the differentiation marker involucrin. The differentiation-induced psoriasin expression was found to be mediated by the protein kinase C pathway. The downregulation of psoriasin expression by small interfering RNA revealed that psoriasin mediates the expression of involucrin, desmoglein 1, transglutaminase 1 and CD24 in normal differentiation. The lentivirus-mediated overexpression of psoriasin, mimicking the psoriatic milieu, gave rise to an altered regulation of differentiation genes and an expression pattern reminiscent of that in psoriatic epidermis. These findings suggest that psoriasin contributes to the dysregulated differentiation process in the psoriasis epidermis.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Dermatologi och venereologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Dermatology and Venereal Diseases (hsv//eng)
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- ref (subject category)
- art (subject category)
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