Macrophage inhibitory cytokine MIC-1 is upregulated by short-wavelength light in cultured normal human dermal fibroblasts

Masashi Akiyama, Keiko Okano, Yoshitaka Fukada, Toshiyuki Okano

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

To better understand dermal response to visible light, we used DNA microarray analysis to search genes induced by blue or near-UV light in normal human dermal fibroblasts. Of about 12 800 transcripts analyzed, near-UV light most prominently upregulated the transcript level of Mic-1, a gene encoding a TGF-β superfamily protein. Quantitative RT-PCR and immunoblot analyses revealed that mRNA and protein levels of Mic-1 were upregulated by both short-wavelength light but not by green or red light. These results suggest that the human dermis is a site for macrophage inhibitory cytokine-1 (MIC-1) production and that visible light activates a dermal transcription cascade. Considering the role of MIC-1 in immune regulation and appetite control, photic MIC-1 regulation is of physiological importance.

Original languageEnglish
Pages (from-to)933-937
Number of pages5
JournalFEBS Letters
Volume583
Issue number5
DOIs
Publication statusPublished - 2009 Mar 4

Keywords

  • Blue light
  • Dermal fibroblast
  • MIC-1
  • Microarray
  • Near-UV light

ASJC Scopus subject areas

  • Biophysics
  • Structural Biology
  • Biochemistry
  • Molecular Biology
  • Genetics
  • Cell Biology

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