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Skala E , Sitarek P , Toma M , Szemraj J , Radek M , Nieborowska-Skorska M , Skorski T , Wysokinska H , Sliwinski T
Inhibition of human glioma cell proliferation by altered Bax/Bcl-2-p53 expression and apoptosis induction by Rhaponticum carthamoides extracts from transformed and normal roots
J Pharm Pharmacol. 2016 Nov;68(11) :1454-1464
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Abstract
OBJECTIVE: The objective of this study was to determine the cytotoxic effect and apoptotic activity of Rhaponticum carthamoides transformed root (TR) and root of soil-grown plant (NR) extracts in a human glioma primary cells. The effect of these root extracts on cell cycle arrest, mitochondrial membrane potential (DeltaPsim) and expression levels of apoptosis-related genes (Bcl-2, Bax and p53) were also examined. METHODS: Cytotoxic activity of root extracts was evaluated by MTT assay. Apoptosis and cell cycle were determined by flow cytometry. Expression levels of apoptosis-related gene were analysed by RT-PCR and Western blotting. DeltaPsim was examined by the use of JC-1 reagent. KEY FINDINGS: Rhaponticum carthamoides root extracts inhibit cell growth and induce apoptosis in a dose-dependent manner in human glioma cells. The root extracts were found to up-regulate the pro-apoptotic Bax protein and down-regulate the anti-apoptotic Bcl-2 protein, consequently increasing the ratios of Bax/Bcl-2 protein levels. Moreover, an increase of the p53 protein level and reduction of DeltaPsim in glioma cells were observed after treatment with NR and TR extracts. CONCLUSION: The results of this study may offer a new insight into the potential anticancer activity of R. carthamoides root extracts.
Notes
2042-7158 Skala, Ewa Sitarek, Przemyslaw Toma, Monika Szemraj, Janusz Radek, Maciej Nieborowska-Skorska, Malgorzata Skorski, Tomasz Wysokinska, Halina Sliwinski, Tomasz Comparative Study Journal Article England J Pharm Pharmacol. 2016 Nov;68(11):1454-1464. doi: 10.1111/jphp.12619. Epub 2016 Oct 2.