PMID- 23424013 OWN - NLM STAT- MEDLINE DCOM- 20130801 LR - 20181202 IS - 1552-8618 (Electronic) IS - 0730-7268 (Linking) VI - 32 IP - 7 DP - 2013 Jul TI - Docking-based three-dimensional quantitative structure-activity relationship (3D-QSAR) predicts binding affinities to aryl hydrocarbon receptor for polychlorinated dibenzodioxins, dibenzofurans, and biphenyls. PG - 1453-8 LID - 10.1002/etc.2191 [doi] AB - Polychlorinated dibenzodioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and polychlorinated biphenyls (PCBs) cause toxic effects after binding to an intracellular cytosolic receptor called the aryl hydrocarbon receptor (AhR). Thymic atrophy, weight loss, immunotoxicity, acute lethality, and induction of cytochrome P4501A1 have all been correlated with the binding affinity to AhR. To study the key molecular features for determining binding affinity to AhR, a homology model of AhR ligand-binding domains was developed, a molecular docking approach was employed to obtain docking-based conformations of all molecules in the whole set, and 3-dimensional quantitative structure-activity relationship (3D-QSAR) methodology, namely, comparative molecular field analysis (CoMFA), was applied. A partial least square analysis was performed, and QSAR models were generated for a training set of 59 compounds. The generated QSAR model showed good internal and external statistical reliability, and in a comparison with other reported CoMFA models using different alignment methods, the docking-based CoMFA model showed some advantages. CI - Copyright (c) 2013 SETAC. FAU - Yuan, Jintao AU - Yuan J AD - Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China. FAU - Pu, Yuepu AU - Pu Y FAU - Yin, Lihong AU - Yin L LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130528 PL - United States TA - Environ Toxicol Chem JT - Environmental toxicology and chemistry JID - 8308958 RN - 0 (Benzofurans) RN - 0 (Dibenzofurans, Polychlorinated) RN - 0 (Ligands) RN - 0 (Polychlorinated Dibenzodioxins) RN - 0 (Receptors, Aryl Hydrocarbon) RN - DFC2HB4I0K (Polychlorinated Biphenyls) SB - IM MH - Benzofurans/*chemistry MH - Chemical Phenomena MH - Dibenzofurans, Polychlorinated MH - Humans MH - Ligands MH - *Models, Chemical MH - Molecular Conformation MH - Polychlorinated Biphenyls/*chemistry MH - Polychlorinated Dibenzodioxins/*analogs & derivatives/chemistry MH - *Quantitative Structure-Activity Relationship MH - Receptors, Aryl Hydrocarbon/*chemistry MH - Reproducibility of Results EDAT- 2013/02/21 06:00 MHDA- 2013/08/02 06:00 CRDT- 2013/02/21 06:00 PHST- 2012/10/29 00:00 [received] PHST- 2013/01/14 00:00 [revised] PHST- 2013/02/06 00:00 [accepted] PHST- 2013/02/21 06:00 [entrez] PHST- 2013/02/21 06:00 [pubmed] PHST- 2013/08/02 06:00 [medline] AID - 10.1002/etc.2191 [doi] PST - ppublish SO - Environ Toxicol Chem. 2013 Jul;32(7):1453-8. doi: 10.1002/etc.2191. Epub 2013 May 28.