PMID- 26248874 OWN - NLM STAT- MEDLINE DCOM- 20160329 LR - 20211203 IS - 1099-1573 (Electronic) IS - 0951-418X (Print) IS - 0951-418X (Linking) VI - 29 IP - 11 DP - 2015 Nov TI - Olive Oil-derived Oleocanthal as Potent Inhibitor of Mammalian Target of Rapamycin: Biological Evaluation and Molecular Modeling Studies. PG - 1776-82 LID - 10.1002/ptr.5434 [doi] AB - The established anticancer and neuroprotective properties of oleocanthal combined with the reported role of mammalian target of rapamycin (mTOR) in cancer and Alzheimer's disease development encouraged us to examine the possibility that oleocanthal inhibits mTOR. To validate this hypothesis, we docked oleocanthal into the adenosine triphosphate binding pocket of a close mTOR protein homologue, namely, PI3K-gamma. Apparently, oleocanthal shared nine out of ten critical binding interactions with a potent dual PIK3-gamma/mTOR natural inhibitor. Subsequent experimental validation indicated that oleocanthal indeed inhibited the enzymatic activity of mTOR with an IC50 value of 708 nM. Oleocanthal inhibits the growth of several breast cancer cell lines at low micromolar concentration in a dose-dependent manner. Oleocanthal treatment caused a marked downregulation of phosphorylated mTOR in metastatic breast cancer cell line (MDA-MB-231). These results strongly indicate that mTOR inhibition is at least one of the factors of the reported anticancer and neuroprotective properties of oleocanthal. CI - Copyright (c) 2015 John Wiley & Sons, Ltd. FAU - Khanfar, Mohammad A AU - Khanfar MA AD - Department of Pharmaceutical Sciences, Faculty of Pharmacy, The University of Jordan, Amman, 11942, Jordan. FAU - Bardaweel, Sanaa K AU - Bardaweel SK AD - Department of Pharmaceutical Sciences, Faculty of Pharmacy, The University of Jordan, Amman, 11942, Jordan. FAU - Akl, Mohamed R AU - Akl MR AD - Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe, Louisiana, USA. FAU - El Sayed, Khalid A AU - El Sayed KA AD - Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe, Louisiana, USA. LA - eng GR - R15 CA167475/CA/NCI NIH HHS/United States GR - 1R15CA167475-01/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20150807 PL - England TA - Phytother Res JT - Phytotherapy research : PTR JID - 8904486 RN - 0 (Aldehydes) RN - 0 (Cyclopentane Monoterpenes) RN - 0 (Olive Oil) RN - 0 (Phenols) RN - AC7QO6038O (oleocanthal) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - W36ZG6FT64 (Sirolimus) SB - IM MH - Aldehydes/*pharmacology MH - Animals MH - Breast Neoplasms/drug therapy/metabolism MH - Cyclopentane Monoterpenes MH - Female MH - Humans MH - *Models, Molecular MH - *Olive Oil MH - Phenols/*pharmacology MH - Phosphatidylinositol 3-Kinases/metabolism MH - Phosphorylation MH - Sirolimus MH - TOR Serine-Threonine Kinases/*antagonists & inhibitors PMC - PMC5051273 MID - NIHMS791261 OTO - NOTNLM OT - antiproliferative OT - breast cancer OT - docking OT - mTOR OT - oleocanthal COIS- The authors declare that there is no conflict of interest. EDAT- 2015/08/08 06:00 MHDA- 2016/03/30 06:00 PMCR- 2016/10/05 CRDT- 2015/08/08 06:00 PHST- 2015/03/20 00:00 [received] PHST- 2015/07/12 00:00 [revised] PHST- 2015/07/21 00:00 [accepted] PHST- 2015/08/08 06:00 [entrez] PHST- 2015/08/08 06:00 [pubmed] PHST- 2016/03/30 06:00 [medline] PHST- 2016/10/05 00:00 [pmc-release] AID - 10.1002/ptr.5434 [doi] PST - ppublish SO - Phytother Res. 2015 Nov;29(11):1776-82. doi: 10.1002/ptr.5434. Epub 2015 Aug 7.