Abstract
Apitherapy has started to gain tremendous recognition because of extraordinary pharmacological importance of honeybee-related ingredients and their derivatives. There has been a renewed interest in the bee venom-based therapies. Interdisciplinary researchers are studying the chemistry and translational value of venom for effective cancer treatment. Bee venom and its major component, melittin, are cytotoxic in cancer cells. In this study, MTT and scratch assays were performed for analysis of melittin-mediated antimetastatic effects. QPCR was used for expression profiling of metastasis-related genes. Three anti-metastatic genes (BRMS1, DRG1, and KAI1/CD82) were studied for the first time after bee venom and melittin treatment in MDA-MB-231 breast cancer cells compared with normal breast cells, and two prometastatic genes (EGFR and WNT7B) were also examined. KAI1/CD82 and BRMS1 are the negative regulators of EGFR. WNT7B is a negative regulator of KAI1/CD82. Selective cytotoxicity of bee venom and melittin was found to be higher as compared to cisplatin. Melittin induced an increase in the expression of BRMS1 and DRG1, whereas bee venom upregulated DRG1 and KAI1/CD82 expression in breast cancer. WNT7B was downregulated in bee venom-treated breast cancer cells. Results suggested that bee venom/melittin exerted antimetastatic effects primarily through upregulation of BRMS1, DRG1, and KAI1/CD82, and downregulation of WNT7B.
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