期刊
BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE
卷 14, 期 -, 页码 -出版社
BMC
DOI: 10.1186/1472-6882-14-377
关键词
Physcion 8-O-beta-glucopyranoside; Rumex japonicus Houtt; Anti-proliferative activity; Apoptosis; Lung cancer
资金
- National Natural Science Foundation of China (NSFC) [30801389]
Background: Lung cancers are leading causes of cancer death, and Rumex japonicus has been traditionally used in folk medicine as anti-microorganic, anti-inflammatory and anti-tumor agents. This study was designed to investigate the anti-proliferative activity of physcion 8-O-beta-glucopyranoside (PG) isolated from Rumex japonicus Houtt. on A549 cell lines. Methods: In our present study, PG was isolated and identified from the ethanol extracts of R. japonicus. MTT method was used to evaluate the anti-proliferative activity of PG on A549 cell lines, and cell cycle distribution assay, apoptosis assay, and western blot analysis in vitro were used to explore the possible mechanisms. Results: From the results of our present study, cell viability was obviously inhibited by PG, in a dose and time-dependent manner. Our results also suggested that the anti-proliferative effect of PG was related to cell cycle arrest at the G2/M phase through repression of cdc2 and Cyclin B1 protein expression. In addition, the results of apoptosis assay and western blot analysis indicated that the anti-proliferative activity could be related to apoptosis via up-regulating the expressions of Bax, caspase-3 and caspase-7, and down-regulating the expressions of Bcl-2. Conclusions: In conclusion, the PG has significant anti-proliferative activity on A549 cell lines, and the possible mechanism was related to cell cycle arrest at the G2/M phase, and apoptosis via the regulations of Bax, Bcl-2, and caspase-3 and caspase-7.
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