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Silibinin induced the apoptosis of Hep-2 cells via oxidative stress and down-regulating survivin expression
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Silibinin induced the apoptosis of Hep-2 cells via oxidative stress and down-regulating survivin expression
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Journal Article
Silibinin induced the apoptosis of Hep-2 cells via oxidative stress and down-regulating survivin expression
2013
Overview
Silibinin is an anticancer and chemopreventive natural compound, which is extracted from milk thistle (
Silybum marianum
). It is reported that silibinin has anticancer efficacy in many malignant tumors. Laryngeal carcinoma is the second most common head and neck squamous carcinoma. In the present work, we investigated the effects of silibinin on laryngeal squamous cell carcinoma (LSCC) cell line Hep-2 cells. We found that silibinin induced the decrease of cell viability in Hep-2 cells with a concentration- and time-dependent manner. Moreover, silibinin resulted in the apoptosis of Hep-2 cells and had synergy effects with arsenic trioxide. Intracellular reactive oxygen species (ROS) accumulation increased because of silibinin exposure. ROS scavenger NAC alleviated the cytotoxicity of silibinin to Hep-2 cells. The mitochondrial membrane potential (MMP) was lost in Hep-2 cells treated with silibinin. Subsequently, silibinin induced the activation of caspase-3 in Hep-2 cells and caspase inhibitor Z-VAD-FMK inhibited the cytotoxicity of silibinin in Hep-2 cells. The survivin expression decreased after Hep-2 cells were treated with silibinin. In conclusion, silibinin induced the apoptosis of Hep-2 cells via oxidative stress and down-regulating survivin expression. Therefore, silibinin is a potential therapeutical agent against LSCC in future.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V
Subject
Antineoplastic Agents, Phytogenic - pharmacology
/ Carcinoma, Squamous Cell - metabolism
/ Carcinoma, Squamous Cell - pathology
/ Gene Expression - drug effects
/ Humans
/ Inhibitor of Apoptosis Proteins - drug effects
/ Inhibitor of Apoptosis Proteins - genetics
/ Inhibitor of Apoptosis Proteins - metabolism
/ Laryngeal Neoplasms - metabolism
/ Laryngeal Neoplasms - pathology
/ Medicine
/ Membrane Potential, Mitochondrial - drug effects
/ Neoplasm Proteins - metabolism
/ Oxidative Stress - drug effects
/ Proteins
/ Software
/ Tumors
