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Paris Saponin II induced apoptosis via activation of autophagy in human lung cancer cells.

Identifieur interne : 000D61 ( Main/Exploration ); précédent : 000D60; suivant : 000D62

Paris Saponin II induced apoptosis via activation of autophagy in human lung cancer cells.

Auteurs : Lili Zhang [République populaire de Chine] ; Shuli Man [République populaire de Chine] ; Yongshuai Wang [République populaire de Chine] ; Jing Liu [République populaire de Chine] ; Zhen Liu [République populaire de Chine] ; Peng Yu [République populaire de Chine] ; Wenyuan Gao [République populaire de Chine]

Source :

RBID : pubmed:27180204

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English descriptors

Abstract

Paris Saponin II (PSII) has been shown anticancer activity against several cancer lines through the pro-apoptotic pathway. The aim of the study was to investigate the relationship between apoptosis and autophagy taking part in the anti-cancer mechanisms of PSII. In this study, PSII induced autophagy and apoptosis in dose- and time-dependent manners. Meanwhile, it induced autophagy as early as 2 h after exposure to 1 μM of PSII accompanying with apoptosis. Blockade of autophagy with chloroquine (CQ) attenuated apoptosis, while regulation of reactive oxygen species (ROS) by N-acetyl cysteine (NAC), gallic acid (GA) and H2O2 could not influence autophagy. In addition, PSII induced apoptosis via activation of autophagy, which might be associated with the activation of JNK and inhibition of PI3K/AKT/mTOR pathway. All in all, our research increased the understanding of the role of PSII regulating autophagy and apoptosis, which would hopefully provide prospective strategies for cancer therapy.

DOI: 10.1016/j.cbi.2016.05.016
PubMed: 27180204


Affiliations:


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<term>Autophagy (drug effects)</term>
<term>Blotting, Western</term>
<term>Cell Line</term>
<term>Chloroquine (toxicity)</term>
<term>Glutathione (metabolism)</term>
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<term>JNK Mitogen-Activated Protein Kinases (metabolism)</term>
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<term>Reactive Oxygen Species (metabolism)</term>
<term>Rhizome (chemistry)</term>
<term>Rhizome (metabolism)</term>
<term>Saponins (pharmacology)</term>
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<front>
<div type="abstract" xml:lang="en">Paris Saponin II (PSII) has been shown anticancer activity against several cancer lines through the pro-apoptotic pathway. The aim of the study was to investigate the relationship between apoptosis and autophagy taking part in the anti-cancer mechanisms of PSII. In this study, PSII induced autophagy and apoptosis in dose- and time-dependent manners. Meanwhile, it induced autophagy as early as 2 h after exposure to 1 μM of PSII accompanying with apoptosis. Blockade of autophagy with chloroquine (CQ) attenuated apoptosis, while regulation of reactive oxygen species (ROS) by N-acetyl cysteine (NAC), gallic acid (GA) and H2O2 could not influence autophagy. In addition, PSII induced apoptosis via activation of autophagy, which might be associated with the activation of JNK and inhibition of PI3K/AKT/mTOR pathway. All in all, our research increased the understanding of the role of PSII regulating autophagy and apoptosis, which would hopefully provide prospective strategies for cancer therapy. </div>
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