alexa Psoriasis vulgaris: cutaneous lymphoid tissue supports T-cell activation and
Dermatology

Dermatology

Journal of Clinical & Experimental Dermatology Research

Author(s): Lew W, Bowcock AM, Krueger JG

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Psoriasis vulgaris is a common inflammatory skin disease that involves infiltration of leukocytes, activation of skin-resident cells and increased production of numerous cytokines, chemokines and inflammatory molecules. This Review presents an integrated view of disease pathogenesis, taking into account immune biology, broad-scale genomic characterization and the response of psoriasis to immune-targeted therapies. Recent studies suggest that activated dendritic cells (DCs) and T cells are central to its pathogenesis, causing ‘inflammation’ through a pathway of sequential interleukin-23 (IL-23) synthesis, interferon-γ (IFN-γ) production, activation of STAT1 (signal transducer and activator of transcription 1) and subsequent transcription of a broad series of IFN- and STAT-1-regulated genes. In situ expression of macrophage inflammatory protein-3β (MIP-3β; CCL19), secondary lymphoid tissue chemokine (SLC; CCL21) and other chemokines normally confined to formal lymphoid tissues, might help to sustain DC accumulation and overall activation of this inflammatory pathway.

This article was published in Trends Immunol and referenced in Journal of Clinical & Experimental Dermatology Research

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