trans-Resveratrol protects ischemic PC12 Cells by inhibiting the hypoxia associated transcription factors and increasing the levels of antioxidant defense enzymes

ACS Chem Neurosci. 2013 Feb 20;4(2):285-94. doi: 10.1021/cn300143m. Epub 2012 Nov 9.

Abstract

An in vitro model of ischemic cerebral stroke [oxygen-glucose deprivation (OGD) for 6 h followed by 24 h reoxygenation (R)] with PC12 cells increases Ca(2+) influx by upregulating native L-type Ca(2+) channels and reactive oxygen species (ROS) generation. This reactive oxygen species generation and increase in intracellular Ca(2+) triggers the expression of hypoxic homeostasis transcription factors such as hypoxia induced factor-1 alpha (HIF-1α), Cav-beta 3 (Cav β3), signal transducer and activator of transcription 3 (STAT3), heat shock protein 27 (hsp-27), and cationic channel transient receptor potential melastatin 7 (TRPM7). OGD insulted PC12 cells were subjected to biologically safe doses (5, 10, and 25 μM) of trans-resveratrol in three different treatment groups: 24 h prior to OGD (pre-treatment); 24 h post OGD (post-treatment); and from 24 h before OGD to end of reoxygenation period (whole-treatment). Here, we demonstrated that OGD-R-induced neuronal injury/death is by reactive oxygen species generation, increase in intracellular calcium levels, and decrease in antioxidant defense enzymes. trans-Resveratrol increases the viability of OGD-R insulted PC12 cells, which was assessed by using MTT, NRU, and LDH release assay. In addition, trans-resveratrol significantly decreases reactive oxygen species generation, intracellular Ca(2+) levels, and hypoxia associated transcription factors and also increases the level of antioxidant defense enzymes. Our data shows that the whole-treatment group of trans-resveratrol is most efficient in decreasing hypoxia induced cell death through its antioxidant properties.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antioxidants / pharmacology*
  • Calcium / metabolism*
  • Calcium Channels / drug effects
  • Calcium Channels / metabolism
  • Cell Death
  • Cell Hypoxia
  • HSP27 Heat-Shock Proteins / drug effects
  • HSP27 Heat-Shock Proteins / metabolism
  • Hypoxia / metabolism*
  • Hypoxia-Inducible Factor 1, alpha Subunit / drug effects
  • Hypoxia-Inducible Factor 1, alpha Subunit / metabolism
  • Ischemia / metabolism*
  • L-Lactate Dehydrogenase / drug effects
  • L-Lactate Dehydrogenase / metabolism
  • PC12 Cells
  • Rats
  • Reactive Oxygen Species / metabolism
  • Resveratrol
  • STAT3 Transcription Factor / drug effects
  • STAT3 Transcription Factor / metabolism
  • Stilbenes / pharmacology*
  • Superoxide Dismutase / drug effects
  • Superoxide Dismutase / metabolism
  • Superoxide Dismutase-1
  • TRPM Cation Channels / drug effects
  • TRPM Cation Channels / metabolism

Substances

  • Antioxidants
  • Cacnb3 protein, rat
  • Calcium Channels
  • HSP27 Heat-Shock Proteins
  • Hif1a protein, rat
  • Hspb1 protein, rat
  • Hypoxia-Inducible Factor 1, alpha Subunit
  • Reactive Oxygen Species
  • STAT3 Transcription Factor
  • Stat3 protein, rat
  • Stilbenes
  • TRPM Cation Channels
  • L-Lactate Dehydrogenase
  • Sod1 protein, rat
  • Superoxide Dismutase
  • Superoxide Dismutase-1
  • Trpm7 protein, rat
  • Resveratrol
  • Calcium