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- E-ISSN 2288-3339
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- P-ISSN1010-0695
- E-ISSN2288-3339
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Cytotoxic effects of ethanol extracts of Saussurea lappa mediated by mitochondrial apoptotic pathway
Journal of Korean Medicine / Journal of Korean Medicine, (P)1010-0695; (E)2288-3339
2004, v.25 no.4, pp.79-89
Seung-Hee,
K.
, Seong-Gyu,
K.
, Chan-Yong,
J.
, &
Chong-Hyeong,
P.
(2004). Cytotoxic effects of ethanol extracts of Saussurea lappa mediated by mitochondrial apoptotic pathway. Journal of Korean Medicine, 25(4), 79-89.
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Abstract
Saussurea lappa and Taraxacum mongolicum have been used for herbal medicinal treatments against cancers in East Asia. We performed this study to understand the molecular basis underlying the anti-tumor effects of two herbs and analyzed the effects of these medicinal herbs on proliferation and on expression of cell growth/apoptosis related molecules by using an AGS gastric cancer cell line. The treatments of Saussurea lappa dramatically reduced cell viabilities in a dose and time-dependent manner, but Taraxacum mongolicum did not. FACS analysis and Annexin V staining assay also showed that Saussurea lappa induces apoptotic cell death of AGS. Expression analyses via RT-PCR and Western blots revealed that Saussurea lappa increased expression of the p53 and its downstream effector p21Waf1, and that the both increased expression of apoptosis related Bax and cleavage of active caspase-3 protein. We also confirmed the translocation of Bax to mitochondria. Collectively, our data demonstrate that Saussurea lappa induces growth inhibition and apoptosis of human gastric cancer cells, and these effects are correlated with down- and up-regulation of growth-regulating apoptotic and tumor suppressor genes, respectively.
- keywords
- Saussurea lappa, mitochondrial pathway, apoptosis, anti-tumor effect, Bax, medicinal herbs.
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