Home HOME Neoplasma 2012 Neoplasma Vol.59, No.6, p.613-621, 2012

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Neoplasma Vol.59, No.6, p.613-621, 2012

Title: Total saponins of Tupistra chinensis induces apoptosis in A549 cells
Author: W. HUANG, H. ZHANG, K. ZOU, J. CHEN*, X. LI, C. LIU, N. HUANG

Abstract: Tupistra chinensis Baker has been used as a folk remedy in China, and it has been shown to exhibit anti-inflammation, expectorant and anti-bacterial effects. In this study, we report the cytotoxic activity of the total saponins of Tupistra chinensis Baker (TST) against several carcinoma cell lines, including A549, MCF-7 and HeLa cells with the IC50 values of 4.11 μg/ml, 6.47 μg/ml and 7.78 μg/ml respectively. Treatment of A549 cells with TST resulted in growth inhibition and induction of apoptosis in a time-dependent manners determined by cell viability, chromatin condensation, DNA fragmentation and flow cytometry analysis. The activities of caspase-3, 9 were significantly increased following TST treatment. Real-time PCR analysis showed that the mRNA expression levels of pro-apoptosis related genes including Bax, P21, P27 and P53 were markedly increased in the cells treated with TST but anti-apoptosis related gene Bcl-2 was slightly decreased. TST also leads to a loss of mitochondrial membrane potential in a time-dependent manner the release of cytochrome C from mitochondria into the cytosol. Thus, these results suggest that TST may play an important role in tumor growth suppression by inducing apoptosis in human A549 cells via mitochondria-dependent apoptotic pathways and the TST would be promising to treat human lung adenocarcinoma.

Keywords: Tupistra chinensis baker, total saponins, cytotoxicity, apoptosis, anticancer
Published online: 01-Aug-2012
Year: 2012, Volume: 59, Issue: 6 Page From: 613, Page To: 621
doi:10.4149/neo_2012_078


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