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Effect of Fructus ligustri Lucidi Extract on Cell Viability in Human Glioma Cells  

Kim, Jin-Won (Department of Internal Medicine. College of Korean Medicine, Dongguk University)
Jeong, Ji-Cheon (Department of Internal Medicine. College of Korean Medicine, Dongguk University)
Publication Information
Journal of Physiology & Pathology in Korean Medicine / v.23, no.1, 2009 , pp. 199-205 More about this Journal
Abstract
It is unclear whether Fructus ligustri Lucidi (FLL) extract anti-proliferative effect in human glioma cells. The present study was therefore undertaken to examine the effect of FLL on cell viability and to determine the underlying mechanism in A172 human glioma cells. Cell viability and cell death were estimated by MTT assay and trypan blue exclusion assay, respectively. Apoptosis was measured by Annexin-V binding assay and cell cycle analysis. Activation of kinases and caspase-3 was estimated by Western blot analysis. FLL resulted in apoptotic cell death in a dose- and time-dependent manner. FLL-induced cell death was not associated with reactive oxygen species generation. Western blot analysis showed that FLL treatment caused down-regulation of PI3K/Akt pathway, but not ERK. The PI3K/Akt inhibitor LY984002 sensitized the FLL-induced cell death and overexpression of Akt prevented the cell death. FLL induced caspase-3 activation and the FLL-induced cell death was prevented by caspase inhibitors. These findings indicate that FLL results in a caspase-dependent cell death through a P13K/Akt pathway in human glioma cells. These data suggest that FLL may serve as a potential therapeutic agent for malignant human gliomas.
Keywords
fructus ligustri Lucidi; cell viability; apoptosis; PI3K/Akt; caspase activation; human glioma cells;
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