Platycodin D induces apoptosis in MCF-7 human breast cancer cells.
J Med Food
; 13(2): 298-305, 2010 Apr.
Article
en En
| MEDLINE
| ID: mdl-20412017
ABSTRACT
Platycodin D (PD), a major constituent isolated from the root of Platycodon grandiflorum, has been suggested to possess anticancer activities, as indicated by its capabilities to induce mitotic arrest and apoptosis in several cancer cells. However, little is known of the underlying action mechanism. This study is the first to investigate the anticancer effect of PD in the human breast cancer cell, MCF-7. Our data showed that PD exhibited marked cell growth inhibition by inducing apoptosis. This induction was associated with activation of caspase-8 and -9 activities and poly(ADP-ribose) polymerase. PD triggered the mitochondrial apoptotic pathway, as indicated by up-regulation of levels of cellular Bax and down-regulation of levels of Bcl-2 and caspase-9 activation. We found that PD induced proteolytic activation of Bid, a member of the proapoptotic Bcl-2 family, implicating PD-induced apoptosis as possibly being functionally linked to a death receptor-mediated pathway. The PD treatment also was accompanied by an increase in cellular generation of reactive oxygen species, indicating that PD-induced apoptosis is likely to be mediated through mitochondrial dysfunction. In addition, we revealed that the mitogen-activated protein kinases, including extracellular signal-regulated kinase 1/2, c-Jun NH(2)-terminal kinase 1/2, and p38, which play important roles in apoptosis, were activated by treatment with PD. These results provide a basic mechanism for the anticancer properties of PD and suggest that PD is a promising candidate for chemotherapy and chemoprevention of breast cancer.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Saponinas
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Triterpenos
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Neoplasias de la Mama
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Extractos Vegetales
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Apoptosis
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Platycodon
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Fitoterapia
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Antineoplásicos Fitogénicos
Límite:
Female
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Humans
Idioma:
En
Revista:
J Med Food
Asunto de la revista:
CIENCIAS DA NUTRICAO
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MEDICINA
Año:
2010
Tipo del documento:
Article
Pais de publicación:
EEUU
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ESTADOS UNIDOS
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ESTADOS UNIDOS DA AMERICA
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EUA
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UNITED STATES
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UNITED STATES OF AMERICA
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US
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USA