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- W2007367611 abstract "Hypoxia is a widespread phenomenon present in many human solid tumors and is associated with a poor prognosis and therapy resistance. Here, we tested the feasibility of melittin, a major component of bee venom, on radiosensitization of hypoxic head and neck squamous cell carcinoma (HNSCC). CNE-2 and KB cells were treated with melittin and radiation response was determined. Cell viability, cytotoxicity and apoptosis induction were examined by CCK-8 assay, colony formation assay, and flow cytometry. Expression of hypoxia-inducible factor 1-alpha (HIF-1α) and vascular endothelial growth factor (VEGF) proteins were assessed using western blotting. Additionally, we also examined the effect of melittin on tumor growth and radiosensitivity in vivo using a xenograft model of HNSCC. Treatment with melittin resulted in cell growth inhibition, induction of cell apoptosis, and reduction of HIF-1α and VEGF expression, which has been linked to hypoxia cell radioresistance. In addition, intraperitoneal injection of melittin significantly reduced the growth of HNSCC tumors in CNE-2 tumor-bearing mice. These data suggest that melittin enhances radiosensitivity of HNSCC under hypoxia condition, and this is associated with the suppression of HIF-1α expression. Melittin appears to be a potential radiotherapy sensitization agent due to its significant antihypoxia activity." @default.
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- W2007367611 date "2014-07-23" @default.
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- W2007367611 title "Melittin enhances radiosensitivity of hypoxic head and neck squamous cell carcinoma by suppressing HIF-1α" @default.
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- W2007367611 doi "https://doi.org/10.1007/s13277-014-2218-0" @default.
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