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Dammarane-type saponins from heat-processed Gynostemma pentaphyllum show fortified activity against A549 cells

Author:
Piao, Xiang-Lan, Wu, Qian, Yang, Jing, Park, Seo Young, Chen, Dao-Jin, Liu, Hui-Min
Source:
Archives of pharmacal research 2013 v.36 no.7 pp. 874-879
ISSN:
0253-6269
Subject:
Gynostemma pentaphyllum, adenocarcinoma, anticarcinogenic activity, cell proliferation, chromatography, cytotoxicity, ethanol, humans, medicinal plants, nuclear magnetic resonance spectroscopy, saponins, silica gel
Abstract:
An ethanol extract from heat-processed Gynostemma pentaphyllum showed more potent cytotoxic activity against human lung adenocarcinoma A549 cells than that of raw G. pentaphyllum. Four constituents were isolated from heat-processed G. pentaphyllum using resin HP-20, silica gel and reversed ODS column chromatography. They were identified by mass and NMR spectra as damulin A and damulin B, gypenoside L and gypenoside LI, respectively. To evaluate the efficacy of these four constituents, the MTT cytotoxicity assay was performed using A549 cells. Based on the structure of these four constituents, the results indicate that the hydroxyl group in C-2 and double bond in C20(21) and C20(22) positions are of importance in inhibition of A549 cell proliferation.
Agid:
224404