Abstract
Recently, biologically active compounds isolated from plants used in herbal medicine have been the center of interest. Deoxypodophyllotoxin (DPT), structurally closely related to the lignan podophyllotoxin, was found to be a potent antitumor and antiproliferative agent, in several tumor cells, invitro. However, DPT has not been used clinically yet because of the lack of invivo studies. This study is the first report demonstrating the antitumor effect of DPT on MDA-MB-231 human breast cancer xenografts in nude mice. DPT, significantly, inhibited the growth of MDA-MB-231 xenograft in BALB/c nude mice. The T/C value (the value of the relative tumor volume of treatment group compared to the control group) of groups treated with 5, 10, and 20mg/kg of intravenous DPT-HP-β-CD was 42.87%, 34.04% and 9.63%, respectively, suggesting the positive antitumor activity of DPT. In addition, the antitumor effect of DPT-HP-β-CD (20mg/kg) in human breast cancer MDA-MB-231 xenograft was more effective than etoposide (VP-16) (20mg/kg) and docetaxel (20mg/kg). These findings suggest that this drug is a promising chemotherapy candidate against human breast carcinoma.
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