Crude Extracts of Agaricus brasiliensis Induce Apoptosis in Human Oral Cancer CAL 27 Cells through a Mitochondria-dependent Pathway
Journal
In Vivo
Journal Volume
25
Journal Issue
3
Pages
355-366
Date Issued
2011-06
Date
2011-06
Author(s)
Fan, Ming-Jen
Lin, Yu-Chin
Yang, Jai-Sing
Liu, Kuo-Ching
Yang, Su-Tso
Lin, Chien-Yih
Wu, Rick Sai-Chuen
Yu, Chun-Shu
Ko, Yang-Ching
Chung, Jing-Gung
Abstract
In Taiwan, oral cancer is the fourth leading cause of male cancer mortality, and is still increasing. The Basiodiomycete, Agaricus brasiliensis Mural (ABM) is a dietary mushroom and has been known for its immune-enhancing, antitumor, antioxidation, antiviral and anti-mutagenesis functions. However, the exact anticancer mechanisms of ABM on human oral cancer cells are still unclear. In the present study, we investigated the effects of 50% ethanol crude extracts and hot water extracts of ABM on oral cancer CAL 27 cells. We observed that 0.9 mg/ml and 0.7 mg/ml of ABM 50% ethanol crude extracts and hot water, respectively, caused morphological changes and significantly reduced cell viability after 48-h treatment. The results showed that both extracts of ABM inhibited cell proliferation, increased the Ca(2+) release, reduced the mitochondria membrane potential (Delta Psi m), and caused cell cycle arrest in the G(0)/G(1) I phase, which contributed to apoptosis. Additionally, ABM induced DNA fragmentation, a characteristic of apoptosis and the expressions of apoptosis-related proteins, including apoptosis-inducing factor, cytochrome c, and caspase-3, were increased. Overall, we demonstrated that 50% ethanol crude extract and hot water extracts of ABM were able to induce apoptotic cell death in CAL 27 cells via the release of cytochrome c from mitochondria into the cytoplasm and activation of caspase-3 in vitro.
Subjects
Agaricus brasiliensis
human oral cancer CAL 27 cells
apoptosis
mitochondria-dependent pathway
Publisher
International Institute of Anticancer Research
Type
journal article
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