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Iberis amara extract induces intracellular formation of reactive oxygen species and inhibits colon cancer

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Item Type:Article
Title:Iberis amara extract induces intracellular formation of reactive oxygen species and inhibits colon cancer
Creators Name:Weidner, C. and Rousseau, M. and Plauth, A. and Wowro, S.J. and Fischer, C. and Abdel-Aziz, H. and Sauer, S.
Abstract:Massively increasing global incidences of colorectal cancer require efficient treatment and prevention strategies. Here, we report unexpected anticancerogenic effects of hydroethanolic Iberis amara extract (IAE), which is known as a widely used phytomedical product for treating gastrointestinal complaints. IAE significantly inhibited the proliferation of HT-29 and T84 colon carcinoma cells with an inhibitory concentration (IC(50) of 6 and 9 μg/ml, respectively, and further generated inhibitory effects in PC-3 prostate and MCF7 breast cancer cells. Inhibition of proliferation in HT-29 cells was associated with a G2/M phase cell cycle arrest including reduced expression of various regulatory marker proteins. Notably, in HT-29 cells IAE further induced apoptosis by intracellular formation of reactive oxygen species (ROS). Consistent with predictions derived from our in vitro experiments, bidaily oral gavage of 50 mg/kg of IAE over 4 weeks resulted in significant inhibition of tumor growth in a mouse HT-29 tumor xenograft model. Taken together, Iberis amara extracts could become useful alternatives for preventing and treating the progression of colon cancer.
Keywords:Brassicaceae, Cell Division, Colonic Neoplasms, Heterografts, Plant Extracts, Reactive Oxygen Species, Tumor Cell Line, Animals, Mice
Source:PLoS ONE
Publisher:Public Library of Science
Page Range:e0152398
Date:6 April 2016
Official Publication:https://doi.org/10.1371/journal.pone.0152398
PubMed:View item in PubMed

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