The vasoprotective effect of JP05 through the activation of PI3K/Akt-dependent eNOS and MEK/ERK pathways in brain endothelial cells

Hye Young Son, Hyo Won Jung, Won Ki Kim, Yong Ki Park

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Aim of the study: Endothelial dysfunction is involved in stroke. Recent therapeutic options for stroke have focused on the combination therapy with a polyherbal mixture. This study was designed to provide insight into the effects of JP05, a water extract of 12 herbs, on the levels of regulators in bEnd.3 mouse brain endothelial cells. Materials and methods: Production of endothelial nitric oxide synthase (eNOS)-mediated nitric oxide (NO), the expression of vascular endothelial growth factor (VEGF) and the phosphorylations of eNOS, phosphatidylinositol 3-kinase (PI3K)/Akt, extracellular signal-regulated protein kinase (ERK) and cAMP response element binding protein (CREB) in JP05 were assayed in bEnd.3 cells, a mouse brain endothelial line. Results: JP05 led to increase the levels of eNOS-mediated NO generation and VEGF expression in bEnd.3 cells. JP05 induced the phosphorylation of eNOS, Akt and ERK in bEnd.3 cells. As well, JP05 blocked the inhibition of PI3K/Akt and ERK activities by LY294002 (PI3K/Akt inhibitor) and PD98059 (mitogen-activated protein kinase inhibitor), respectively. JP05 also induced the phosphorylation of CREB, which plays an important role in endothelial cell function and blood vessel development. Conclusion: Taken together, these results indicate that JP05 can upregulate eNOS-mediated NO generation and VEGF expression through the ERK and/or PI3K/Akt activation, an upstream event of angiogenesis. JP05 with vasoprotective properties has a potential therapy for human brain diseases including stroke.

Original languageEnglish
Pages (from-to)607-613
Number of pages7
JournalJournal of Ethnopharmacology
Volume130
Issue number3
DOIs
Publication statusPublished - 2010 Aug

Keywords

  • Brain endothelial cell
  • ENOS
  • JP05
  • NO
  • PI3K/Akt
  • VEGF

ASJC Scopus subject areas

  • Pharmacology
  • Drug Discovery

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