TY - JOUR
T1 - HU-331, a novel cannabinoid-based anticancer topoisomerase II inhibitor
AU - Kogan, Natalya M.
AU - Schlesinger, Michael
AU - Priel, Esther
AU - Rabinowitz, Ruth
AU - Berenshtein, Eduard
AU - Chevion, Mordechai
AU - Mechoulam, Raphael
PY - 2007/1
Y1 - 2007/1
N2 - Anthracyclines, a large group of quinonoid compounds, are used to treat some forms of cancer. Although highly effective in cancer therapy, the mechanism of action of these compounds is not specific; they act on cancer and other cells by numerous mechanisms. A new anticancer quinone (HU-331) was synthesized from cannabidiol. It shows significant high efficacy against human cancer cell lines in vitro and against in vivo tumor grafts in nude mice. In this study, we investigated its mode of action and present evidence on its unique mechanism. HU-331 does not cause cancer cell cycle arrest, cell apoptosis, or caspase activation. HU-331 - caused cell death of human cancer cell lines is not mediated by reactive oxygen intermediates/species, as exposure to HU-331 failed to elicit the generation of reactive oxygen species. HU-331 inhibits DNA topoisomerase II even at nanomolar concentrations but has only a slight nonsignificant effect on DNA topoisomerase I action. The cannabinoid quinone HU-331 is a highly specific inhibitor of topoisomerase II, compared with most known anticancer quinones. It might represent a new potent anticancer drug.
AB - Anthracyclines, a large group of quinonoid compounds, are used to treat some forms of cancer. Although highly effective in cancer therapy, the mechanism of action of these compounds is not specific; they act on cancer and other cells by numerous mechanisms. A new anticancer quinone (HU-331) was synthesized from cannabidiol. It shows significant high efficacy against human cancer cell lines in vitro and against in vivo tumor grafts in nude mice. In this study, we investigated its mode of action and present evidence on its unique mechanism. HU-331 does not cause cancer cell cycle arrest, cell apoptosis, or caspase activation. HU-331 - caused cell death of human cancer cell lines is not mediated by reactive oxygen intermediates/species, as exposure to HU-331 failed to elicit the generation of reactive oxygen species. HU-331 inhibits DNA topoisomerase II even at nanomolar concentrations but has only a slight nonsignificant effect on DNA topoisomerase I action. The cannabinoid quinone HU-331 is a highly specific inhibitor of topoisomerase II, compared with most known anticancer quinones. It might represent a new potent anticancer drug.
UR - http://www.scopus.com/inward/record.url?scp=33846840690&partnerID=8YFLogxK
U2 - 10.1158/1535-7163.MCT-06-0039
DO - 10.1158/1535-7163.MCT-06-0039
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C2 - 17237277
AN - SCOPUS:33846840690
SN - 1535-7163
VL - 6
SP - 173
EP - 183
JO - Molecular Cancer Therapeutics
JF - Molecular Cancer Therapeutics
IS - 1
ER -