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Tetrandrine induces programmed cell death in human oral cancer CAL 27 cells through the reactive oxygen species production and caspase-dependent pathways and associated with beclin-1-induced cell autophagy.

Authors :
Lien, Jin‐Cherng
Lin, Meng‐Wei
Chang, Shu‐Jen
Lai, Kuang‐Chi
Huang, An‐Cheng
Yu, Fu‐Shun
Chung, Jing‐Gung
Source :
Environmental Toxicology; Jan2017, Vol. 32 Issue 1, p329-343, 15p
Publication Year :
2017

Abstract

ABSTRACT Tetrandrine, a bisbenzylisoquinoline alkaloid, is extracted from the root of the Chinese herb Radix Stephania tetrandra S Moore. This compound has antitumor activity in different cancer cell types. In this study, the effects of tetrandrine on human oral cancer CAL 27 cells were examined. Results indicated that tetrandrine induced cytotoxic activity in CAL 27 cells. Effects were due to cell death by the induction of apoptosis and accompany with autophagy and these effects were concentration- and time-dependent manners. Tetrandrine induced apoptosis was accompanied by alterations in cell morphology, chromatin fragmentation, and caspase activation in CAL 27 cells. Tetrandrine treatment also induced intracellular accumulation of reactive oxygen species (ROS). The generation of ROS may play an important role in tetrandrine-induced apoptosis. Tetrandrine triggered LC3B expression and induced autophagy in CAL 27 cells. Tetrandrine induced apoptosis and autophagy were significantly attenuated by N-acetylcysteine pretreatment that supports the involvement of ROS production. Tetrandrine induced cell death may act through caspase-dependent apoptosis with Beclin-1-induced autophagy in human oral cancer cells. © 2016 Wiley Periodicals, Inc. Environ Toxicol 32: 329-343, 2017. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
15204081
Volume :
32
Issue :
1
Database :
Complementary Index
Journal :
Environmental Toxicology
Publication Type :
Academic Journal
Accession number :
120282203
Full Text :
https://doi.org/10.1002/tox.22238