Cancer chemopreventive potential of luteolin-7-O-glucoside isolated from Ophiorrhiza mungos Linn.

The anticarcinogenic potential of the phytocompound Luteolin-7-O-Glucoside (LUT7G), isolated from the leaves of Ophiorrhiza mungos Linn, was studied against 4 different cancer cell lines (COLO 320 DM, AGS, MCF-7, and A549) and normal VERO cell line. The ability of LUT7G to induce apoptosis was determined by its antiradical activity, DNA fragmentation, expression of β-catenin, and chemopreventive efficacy in vivo by administering rats with DMH (20 mg/kg b.w., s.c.) for 4 consecutive wk and supplementing with 3 different doses throughout the experimental period of 16 wk. LUT7G scavenged 80% of DPPH radicals generated in vitro at 1000 μM and suppressed the expression of β-catenin to 40% at 120 μM concentrations. LUT7G induced apoptosis by scavenging ROS and suppressing the expression of β-catenin in COLO 320 DM cells and effectively inhibited ACF development in DMH-induced experimental carcinogenesis. Hence LUT7G can be a potent anticancer drug for colon carcinogenesis.