Oxidative stress-induced cellular senescence desensitizes cell growth and migration of vascular smooth muscle cells through down-regulation of platelet-derived growth factor receptor-beta

Chun Hsu Pan, Chang Jui Chen, Chun Ming Shih, Ming Fu Wang, Jie Yu Wang, Chieh Hsi Wu

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The relationship between aging and restenosis are unclear. The purposes of this study were to investigate the possible pathological role and mechanism of aging on formation of restenosis. Our data indicated that cell proliferation and migration of the oxidative stress-induced senescent vascular smooth muscle cells were obviously desensitized to stimulation by platelet-derived growth factor (PDGF)-BB, which may have been caused by suppression of promoter activity, transcription, translation, and activation levels of PDGF receptor (PDGFR)-β. The analyzed data obtained from the binding array of transcription factors (TFs) showed that binding levels of eighteen TFs on the PDGFR-β promoter region (-523 to -1) were significantly lower in senescent cells compared to those of non-senescent cells. Among these TFs, the bioinformatics prediction suggested that the putative binding sites of ten TFs were found in this promoter region. Of these, transcriptional levels of seven TFs were markedly reduced in senescent cells. The clinical data showed that the proportion of restenosis was relatively lower in the older group than that in the younger group. Our study results suggested that a PDGFR-β-mediated pathway was suppressed in aging cells, and our clinical data showed that age and the vascular status were slightly negatively correlated in overall participants.

Original languageEnglish
Pages (from-to)8085-8102
Number of pages18
JournalAging
Volume11
Issue number19
DOIs
Publication statusPublished - Jan 1 2019

Keywords

  • Aging
  • Cellular senescence
  • Platelet-derived growth factor
  • Restenosis
  • Vascular smooth muscle cells

ASJC Scopus subject areas

  • Ageing
  • Cell Biology

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