Journal
ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY
Volume 36, Issue 1, Pages 115-124Publisher
ELSEVIER
DOI: 10.1016/j.etap.2013.03.012
Keywords
Platycodin D; Osthole; Combination treatment; Murine 4T1 cells; Human MDA-MB-231 cells; Anti-invasion
Funding
- National Natural Science Foundation of China [81173269, 81102597, 81102598]
- Foundation of Shanghai Municipal Health Bureau [2010Y119]
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In this study, two invasive mammary carcinoma cells (MDA-MB-231 and 4T1) were utilized to evaluate the inhibitory activities of platycodin D, osthole, and the two in combination. The anti-proliferative effect was tested using the MTT and BrdU assay, and the combination of 15 mu M osthole and 75 mu M platycodin D was used for subsequent analyses. The anti-invasive effect was evaluated by the transwell assay. The results showed that the combination treatment reduced both cell proliferation and invasion. Western blot and real-time PCR revealed that the platycodin D-osthole combination significantly decreased T beta RII, Smad2, Smad3 and Smad4 gene or protein expressions, as well as effectively blocked TGF-beta-induced phosphorylation of Smad2 and Smad3. Thus, this study demonstrates that the anti-cancer effects of the platycodin D-osthole combination in breast cancer cells involve proliferation inhibition and invasion blockade, both of which maybe mediated by perturbations in the TGF-beta/Smads pathway. (C) 2013 Elsevier B.V. All rights reserved.
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