Abstract
BackgroundThe genus Withania (Family: Solanaceae) holds an important position in Ayurveda, the Indian traditional system of medicine. Withania somnifera Dunal and Withania coagulans Dunal have been documented in folklore as panaceas for various ailments since time immemorial. W. coagulans (WC), commonly called as Indian cheese maker is used for fermenting milk for cheese production in various parts of India. ObjectivesIn the study, in vitro cytotoxicity of methanolic extract of dried fruits (berries) of WC was evaluated in a dose dependent manner using trypan blue dye exclusion method against human breast cancer cell line MDA-MB-231 and normal kidney epithelial cell line Vero in the range 20–200 μg/ml. Material and methodsThe percentage viability of the cell lines was determined by using MTT assay and cytometry. ResultsMethanolic extract of WC showed significant anticancer activity against MDA-MB-231 cell line. Cell viability was reduced to about 50% at 40 μg/ml of methanolic extract in 50% DMSO. Cytotoxicity of the extract was lower in 10% and 1% DMSO. On the other hand, methanolic extract of WC did not exhibit any significant in vitro activity against Vero cells at 170 and 200 μg/ml. AGE of isolated DNA from treated cancer cells revealed characteristic ladder like fragmentation, a hallmark of apoptosis. HPLC profiling was carried out for identification of the active components, which demonstrated the presence of Withaferin A in the methanolic extract. ConclusionMethanolic extract of WC possesses apoptotic activity against human breast cancer cells in vitro albeit lower in comparison to W. somnifera and warrants further investigation.
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