Vaccinium Vitis-Idaea L., Origin from Bulgaria Indicate in Vitro Antitumor Еffect on Human Cervical and Breast Cancer Cells
Cancer is a socially significant disease. Along with efforts to understand the complex genetic/epigenetic factors that trigger a carcinogenesis, it is also necessary to analyze the potential natural active substances that may delay or even stop neoplastic transformation. Promising candidates are Bulgarian cranberries from high mountain plant populations, which are rich in phenolics and anthocyanins and have proven beneficial effects on human body.The present study aims to evaluate in vitro, antitumor activities of total extracts and purified nonanthocyanin and anthocyanins fractions of Vaccinium vitis-idaea L., picked in Bulgaria on human cervical (HeLa) and breast (MCF7) cancer cell lines, as well as to examine some of the apoptotic mechanisms underlying them.Materials and methods: Four methanol extracts and respective number of purified B- nonanthocyanin / C- anthocyanins fractions of Bulgarian lingonberry were used. Antitumor effect was established by Trypan Blue method, monitoring of morphological changes and МТТ cell viability assay. Assessment of apoptotic activity was performed using DNA fragmentation method.Results: The results from МТТ analyses showed that B- nonanthocyanin fractions of Bulgarian lingonberry have well expressed inhibitory effect on survival of tested tumor cells. The observed effect dependent of the dose administered and were stronger in relation with the high-mountain populations and HeLa cell line. The integrity of the extracted DNA from treated survival cells indicates possible apoptosis mechanisms under the action of biologically active ingredients from lingonberries.
Conclusion: Survey of antitumor activities of Bulgarian lingonberries based on molecular methods, could contribute to establish the natural substances useful for human health in general and practical oncology.
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