Elastin peptides antagonize ceramide-induced apoptosis

FEBS Lett. 2009 Jul 21;583(14):2385-91. doi: 10.1016/j.febslet.2009.06.037. Epub 2009 Jun 24.

Abstract

Elastin peptides regulate proliferation, chemotaxis and protease expression. The aim of this work was to assess their influence on apoptosis. Human skin fibroblast cell death was induced using C(2)-ceramide in the presence or absence of elastin peptides. We show that ceramide-induced apoptosis could be blocked by elastin peptides. Using pharmacological inhibitors, we show that elastin peptide treatment leads to activation of the anti-apoptotic protein Akt that phosphorylates the pro-apoptotic protein Bad, the Foxo3a transcription factor and caspase-9. Importantly, the anti-apoptotic effects of elastin peptides were persistent in time. Our results suggest that elastin peptides could be potent cell survival factors.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Apoptosis / drug effects*
  • Caspase 9 / metabolism
  • Cells, Cultured
  • Ceramides / pharmacology*
  • Elastin / pharmacology*
  • Enzyme Activation
  • Fibroblasts / cytology
  • Fibroblasts / drug effects
  • Fibroblasts / physiology
  • Humans
  • Peptides / pharmacology*
  • Phosphatidylinositol 3-Kinases / metabolism
  • Proto-Oncogene Proteins c-akt / metabolism
  • Signal Transduction / drug effects
  • Skin / cytology

Substances

  • Ceramides
  • Peptides
  • Elastin
  • Phosphatidylinositol 3-Kinases
  • Proto-Oncogene Proteins c-akt
  • Caspase 9