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Flavone inhibits migration through DLC1/RhoA pathway by decreasing ROS generation in breast cancer cells
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Flavone inhibits migration through DLC1/RhoA pathway by decreasing ROS generation in breast cancer cells
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Journal Article
Flavone inhibits migration through DLC1/RhoA pathway by decreasing ROS generation in breast cancer cells
2016
Overview
Tumor suppressor protein deleted in liver cancer 1 (DLC1) is a RhoGTPase-activating protein (RhoGAP) and inhibits cancer cell migration by inactivating downstream target protein RhoA. A few studies have reported the regulations of reactive oxygen species (ROS) on RhoGAP. In this study, we investigated flavone (the core structure of flavonoids)-induced regulation on ROS generation and DLC1/RhoA pathway in MCF-7 and MDA-MB-231 breast cancer cells and explored whether flavone-induced upregulation of DLC1 is mediated by ROS. Our results showed that flavone decreased ROS production and inhibited cell migration through DLC1/RhoA pathway. To further investigate the role of ROS in flavone-induced regulation on DLC1/RhoA pathway, hydrogen peroxide was added to restore the ROS levels. Flavone-induced upregulation of DLC1 expression, downregulation of RhoA activity, and inhibition of cell migration were all restrained by hydrogen peroxide. We also found that flavone increased DLC1 stability by inhibiting DLC1 protein degradation in breast cancer cells. In summary, our study demonstrated that flavone inhibited cell migration through DLC1/RhoA pathway by decreasing ROS generation and suppressed DLC1 degradation in MCF-7 and MDA-MB-231 breast cancer cells.
Publisher
Springer US,Springer Science & Business Media LLC,Society for In Vitro Biology
Subject
/ Animal Genetics and Genomics
/ Biomedical and Life Sciences
/ Breast Neoplasms - metabolism
/ Cell Movement - drug effects
/ Flavones
/ GTPase-Activating Proteins - genetics
/ GTPase-Activating Proteins - metabolism
/ Humans
/ Hydrogen
/ Proteins
/ Reactive Oxygen Species - metabolism
/ rhoA GTP-Binding Protein - genetics
/ rhoA GTP-Binding Protein - metabolism
/ Tumor Suppressor Proteins - genetics
