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Anti-proliferative properties of prenylated flavonoids from hops (Humulus lupulus L.) in human prostate cancer cell lines |
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| Authors: | L. Delmulle, A. Bellahc ne, W. Dhooge, F. Comhaire, F. Roelens, K. Huvaere, A. Heyerick, V. Castronovo,D. De Keukeleire |
| Affiliation: | aGhent University-UGent, Faculty of Pharmaceutical Sciences, Laboratory of Pharmacognosy and Phytochemistry, B-9000 Ghent, Belgium bMetastasis Research Laboratory, University of Liège, B-4000 Liège, Belgium cGhent University Hospital, Department of Endocrinology, B-9000 Ghent, Belgium |
| Abstract: | Chalcones xanthohumol (X) and desmethylxanthohumol (DMX), present in hops (Humulus lupulus L.), and the corresponding flavanones isoxanthohumol (IX, from X), 8-prenylnaringenin (8-PN, from DMX), and 6-prenylnaringenin (6-PN, from DMX), have been examined in vitro for their anti-proliferative activity on human prostate cancer cells PC-3 and DU145. X proved to be the most active compound in inhibiting the growth of the cell lines with IC50 values of 12.3±1.1 μM for DU145 and 13.2±1.1 μM for PC-3. 6-PN was the second most active growth inhibitor, particularly in PC-3 cells (IC50 of 18.4±1.2 μM). 8-PN, a highly potent phytoestrogen, exhibited pronounced anti-proliferative effects on PC-3 and DU145 (IC50 of 33.5±1.0 and 43.1±1.2 μM, respectively), and IX gave comparable activities (IC50 of 45.2±1.1 μM for PC-3 and 47.4±1.1 μM for DU145). DMX was the least active compound. It was evidenced for the first time that this family of prenylated flavonoids from hops effectively inhibits proliferation of prostate cancer cells in vitro. |
| Keywords: | Prenylflavonoids Humulus lupulus L. Prostate cancer cells Antiproliferative activity |
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