Novel mechanisms of T-cell and dendritic cell activation revealed by profiling of psoriasis on the 63,100-element oligonucleotide array

Xianghong Zhou, James G. Krueger, Ming Chih J. Kao, Ed Lee, Fenghe Du, Alan Menter, Wing Hung Wong, Anne M. Bowcock

Research output: Contribution to journalArticlepeer-review

266 Scopus citations

Abstract

A global picture of gene expression in the common immune-mediated skin disease, psoriasis, was obtained by interrogating the full set of Affymetrix GeneChips with psoriatic and control skin samples. We identified 1,338 genes with potential roles in psoriasis pathogenesis/maintenance and revealed many perturbed biological processes. A novel method for identifying transcription factor binding sites was also developed and applied to this dataset. Many of the identified sites are known to be involved in immune response and proliferation. An in-depth study of immune system genes revealed the presence of many regulating cytokines and chemokines within involved skin, and markers of dendritic cell (DC) activation in uninvolved skin. The combination of many CCR7+ T cells, DCs, and regulating chemokines in psoriatic lesions, together with the detection of DC activation markers in nonlesional skin, strongly suggests that the spatial organization of T cells and DCs could sustain chronic T-cell activation and persistence within focal skin regions.

Original languageEnglish
Pages (from-to)69-78
Number of pages10
JournalPhysiological Genomics
Volume13
DOIs
StatePublished - Jul 2003
Externally publishedYes

Keywords

  • Chemokines
  • Gene expression
  • Immune signaling
  • Promoter analysis

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