Molecular insights into the anti-cancer properties of traditional Tibetan medicine Yukyung Karne.

Abstract:

BACKGROUND:Yukyung karne (YK) is a traditional Tibetan formulation used for many centuries for the treatment of ovarian cancer. However, the pharmacological basis of its anticancer property is not well understood. In the present study, the anticancer property of YK was investigated in cell culture. METHODS:The growth inhibitory property of YK was evaluated in SKOV6, IHH, HepG2 and HEK293 cell lines using MTT assay. The pro-apoptotic activity of drug was analyzed by terminal deoxynuleotidyl transferase dUTP nick end labeling (TUNEL) and DNA fragmentation assays. Confocal microscopy was used to show the release of cytochrome c and its co-localization with mitochondria with the help of dsRed mitotracker in SKOV6 cells. The inhibition in cell proliferation was also visualized by confocal microscopy after BrDU incorporation. The activation of tumor suppressor p53 was evaluated by Western blotting while VEGF levels in culture supernatant were measured by a colorimetric method. RESULTS:YK specifically and efficiently induced apoptotic killing of the human ovarian cancer SKOV6 cells as indicated by increased DNA fragmentation and nick end DNA labeling. Confocal microscopy suggested inhibition of cell proliferation and increase in cytochrome c release via perturbation in mitochondrial membrane potential (Δψm). Further, YK up-regulated the expression of tumor suppressor p53 and key cyclin-dependent kinase inhibitor p21, and inhibited VEGF secretion by cells. Interestingly, YK also exhibited a synergy with paclitaxel which is a well-known anti-cancer therapeutic drug. CONCLUSIONS:The pharmacological properties of YK to impose growth arrest and trigger pro-apoptotic death in cells amply justify its usage in primary as well as adjunct therapy for ovarian cancer.

authors

Choedon T,Dolma D,Mathan G,Kumar V

doi

10.1186/1472-6882-14-380

subject

Has Abstract

pub_date

2014-10-07 00:00:00

pages

380

issn

1472-6882

pii

1472-6882-14-380

journal_volume

14

pub_type

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