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Title: Berberine inhibits Rho GTPases and cell migration at low doses but induces G2 arrest and apoptosis at high doses in human cancer cells
Authors: Ching, YP;Wong, YC;Cheung, ALM;Tong, Y;Tsao, SW;Feng, Y;Lau, EPW;Di, K;Cheung, PY;Hau, PM;Wan, TSK;Tsang, CM
subject: Apoptosis;Berberine;Cell migration;G2 arrest;Rho GTPases
Year: 2009
Publisher: Demetrios A Spandidos Ed & Pub. The Journal's web site is located at
Description: Berberine is an active ingredient extracted from Coptidis rhizoma which has been used for centuries as a traditional Chinese medicine for treatment of inflammatory diseases. Recent studies have indicated that berberine has anticancer properties. Berberine arrested cell growth and inhibited cell migration in various cancer cell lines. In this study, we examined the effects of berberine on HONE1 cells, which have been commonly used as a cell model for naso-pharyngeal carcinoma. We observed the inhibitory effects of berberine on HONE1 cells at a high dosage (>150 μM). Berberine effectively induced the mitotic arrest of HONE1 cells at 300 μM which was associated with apoptosis. Berberine had differential intracellular localization at low and high doses. At a low dose (50 μM), berberine was localized in the mitochondria while at a high dose (300 μM), berberine was localized in the nucleus which may have induced mitotic arrest. Berberine effectively inhibited cell migration and invasion at low doses. Using a specific GST pull-down assay of activated Rho GTPases, we demonstrated that berberine suppressed the activation of Rho GTPases including RhoA, Cdc42 and Rac1. This indicates a novel function of berberine in the suppression of Rho GTPase signaling to mediate its inhibitory action on cell migration and motility. The potential of berberine to inhibit cancer metastasis in cancer warrants further investigation.
Standard no: International Journal Of Molecular Medicine, 2009, v. 24 n. 1, p. 131-138
Appears in Collections:Department of Anatomy

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