Interleukin-15 expression by human endothelial cells: Up-regulation by ultraviolet B and psoralen plus ultraviolet A treatment

M. Mohamadzadeh, M. J. McGuire, I. Dougherty, Ponciano D Cruz

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

The purposes of the present study were to determine whether endothelial cells express IL-15 and to evaluate effects of ultraviolet B (UVB) and 8-methoxypsoralens plus UVA (PUVA) on such expression. Cultured human endothelial cells derived from dermis or umbilical veins were subjected to reverse transcriptase-polymerase chain reaction (RT-PCR) and immunoblot analyses for the detection of IL-15 mRNA and protein, respectively. Both dermal and umbilical vein endothelial cells were shown to express IL-15 mRNA and protein, and these markers were upregulated following UVB or PUVA treatment (but not by UVA or 8-methoxypsoralens alone). Also using RT-PCR, dermal and umbilical vein endothelial cells were shown to express IL-2Rγc mRNA. These results expand the sources of IL-15 in skin to include keratinocytes, dermal fibroblasts, and now endothelial cells. That IL-15 from all three skin cells can be upregulated by UV treatment suggests a role for this cytokine in photosensitive disorders. Finally, the possibility of an autocrine effect of IL-15 on endothelial cells is raised by the expression of IL-2Rγc in these cells.

Original languageEnglish (US)
Pages (from-to)17-21
Number of pages5
JournalPhotodermatology Photoimmunology and Photomedicine
Volume12
Issue number1
DOIs
StatePublished - 1996

Keywords

  • Endothelial cell
  • IL-15
  • IL-2Rγc
  • PUVA
  • UVB radiation

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology
  • Radiology Nuclear Medicine and imaging
  • Dermatology

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