Abstract
Abstract Purpose: To determine if albendazole (ABZ) interferes with the tumoral production of HIF-1α and VEGF proteins. Procedures: Human ovarian cancer OVCAR-3 cells were exposed to hypoxic conditions and the affect of ABZ on HIF-1α and VEGF expression was determined. In vivo, female nude mice bearing intraperitoneal tumors were treated with an acute dose of ABZ (150 mg/kg, i.p.), and then euthanased at various time points (1, 6, 24, 48 and 72 h). Excised tumors were analysed for HIF-1α and VEGF expression. Results: ABZ blocked the hypoxia-induced surge in HIF-1α protein. In mice, tumoral expression of HIF-1α and VEGF proteins were highly suppressed by ABZ in a reversible time-dependent manner. In drug treated mice, tumor VEGFmRNA levels were also profoundly suppressed. Conclusion: The results show that the anti-VEGF effect is mediated through the inhibition of HIF-1α. Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 101st Annual Meeting of the American Association for Cancer Research; 2010 Apr 17-21; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2010;70(8 Suppl):Abstract nr 383.
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