PMID- 23545333 OWN - NLM STAT- MEDLINE DCOM- 20131227 LR - 20211203 IS - 1873-4243 (Electronic) IS - 1093-3263 (Linking) VI - 42 DP - 2013 May TI - Pharmacophore modeling, homology modeling, and in silico screening reveal mammalian target of rapamycin inhibitory activities for sotalol, glyburide, metipranolol, sulfamethizole, glipizide, and pioglitazone. PG - 39-49 LID - S1093-3263(13)00043-0 [pii] LID - 10.1016/j.jmgm.2013.02.009 [doi] AB - Mammalian target of rapamycin (mTOR) is a serine/threonine kinase and member of the PI3K-related kinase (PIKK) family. It plays a central role in integrating signals from metabolism, energy homeostasis, cell cycle, and stress response. Aberrant PI3K/mTOR activation is commonly observed in diseases such as cancer, diabetes and Alzheimer's disease. Accordingly, we developed common feature binding hypotheses for a set of 6 potent mTOR antagonists. The generated models were validated using receiver operating characteristic (ROC) curve analyses. To gain better insight into ligand-mTOR interactions, a homology model for the kinase domain of mTOR was built using the crystallographic structure of PI3Kgamma as template. The optimal pharmacophore model was further improved based on detailed docking studies of potent training compound in the homology model. The modified binding model was employed as 3D search query to screen our in-house-built database of established drugs. Subsequent in vitro screening of captured hits showed that six of them have submicromolar to low micromolar bioactivities, namely, glyburide, metipranolol, sulfamethizole, glipizide, pioglitazone, and sotalol. CI - Copyright (c) 2013 Elsevier Inc. All rights reserved. FAU - Khanfar, Mohammad A AU - Khanfar MA AD - Drug Discovery Unit, Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Jordan, Amman 11942, Jordan. FAU - AbuKhader, Majed M AU - AbuKhader MM FAU - Alqtaishat, Saja AU - Alqtaishat S FAU - Taha, Mutasem O AU - Taha MO LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130313 PL - United States TA - J Mol Graph Model JT - Journal of molecular graphics & modelling JID - 9716237 RN - 0 (Adrenergic beta-Antagonists) RN - 0 (Anti-Infective Agents) RN - 0 (Hypoglycemic Agents) RN - 0 (Thiazolidinediones) RN - 25W8454H16 (Sulfamethizole) RN - A6D97U294I (Sotalol) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - SX6K58TVWC (Glyburide) RN - X39AL81KEB (Metipranolol) RN - X4OV71U42S (Pioglitazone) RN - X7WDT95N5C (Glipizide) SB - IM MH - Adrenergic beta-Antagonists/*pharmacology MH - Amino Acid Sequence MH - Anti-Infective Agents/*pharmacology MH - Catalytic Domain MH - Crystallography, X-Ray MH - Glipizide/pharmacology MH - Glyburide/pharmacology MH - Humans MH - Hypoglycemic Agents/*pharmacology MH - Metipranolol/pharmacology MH - Models, Molecular MH - Molecular Docking Simulation MH - Phosphatidylinositol 3-Kinases/*chemistry MH - Pioglitazone MH - Quantitative Structure-Activity Relationship MH - ROC Curve MH - Sequence Alignment MH - Sotalol/pharmacology MH - Sulfamethizole/pharmacology MH - TOR Serine-Threonine Kinases/*antagonists & inhibitors MH - Thiazolidinediones/pharmacology EDAT- 2013/04/03 06:00 MHDA- 2013/12/29 06:00 CRDT- 2013/04/03 06:00 PHST- 2012/12/20 00:00 [received] PHST- 2013/02/21 00:00 [revised] PHST- 2013/02/24 00:00 [accepted] PHST- 2013/04/03 06:00 [entrez] PHST- 2013/04/03 06:00 [pubmed] PHST- 2013/12/29 06:00 [medline] AID - S1093-3263(13)00043-0 [pii] AID - 10.1016/j.jmgm.2013.02.009 [doi] PST - ppublish SO - J Mol Graph Model. 2013 May;42:39-49. doi: 10.1016/j.jmgm.2013.02.009. Epub 2013 Mar 13.