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  • Title: Lycii cortex radicis extract inhibits glioma tumor growth in vitro and in vivo through downregulation of the Akt/ERK pathway.
    Author: Jeong JC, Kim SJ, Kim YK, Kwon CH, Kim KH.
    Journal: Oncol Rep; 2012 May; 27(5):1467-74. PubMed ID: 22266745.
    Abstract:
    Lycii cortex radicis (LCR) is a traditional Korean medicinal herb. The present study was undertaken to examine the effect of an LCR extract on glioma cell growth and to determine its molecular mechanism in U87MG human glioma cells. The LCR extract resulted in apoptotic cell death in a dose- and time-dependent manner. The LCR extract-induced cell death was associated with generation of reactive oxygen species (ROS). Western blot analysis showed that the LCR extract caused downregulation of Akt and ERK. The LCR-induced cell death was prevented by transfection with the constitutively active forms of Akt and MEK. Oral administration of LCR extracts in subcutaneous U87MG xenograft models reduced glioma tumor volume. Taken together, these findings suggest that the LCR extract results in human glioma cell death through mechanisms involving ROS generation, downregulation of Akt and ERK, and caspase activation in vitro and reduces glioma tumor growth in vivo. These data suggest that the LCR extract may serve as a potential therapeutic agent for malignant human glioblastomas.
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