Differentiation of the Agonists and Antagonists of the α7 Nicotinic Acetylcholine Receptor

查看全文 作　　者：WU [1,2]Guanzhao;XU [1,2]Qingliang;BAO [1]Yilei;LIU [1]Yuwei;LI [1]Qian;FANG [1]Zhengyu;FU [1]Jingyi;DING [1]Yuhang;LIANG [1]Zhiqing;JIANG [1,2]Tao;YU [1,2]Rilei 机构地区：[1]Key Laboratory of Marine Drugs,Chinese Ministry of Education,School of Medicine and Pharmacy,Ocean University of China,Qingdao 266003,China;[2]Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology,Qingdao 266003,China 出　　处：《Journal of Ocean University of China》索引2019年第18卷第5期,共6页 基　　金：supported by the Fundamental Research Funds for the Central Universities (No. 201762011 for R. Y.);National Laboratory Director Fund from the Qingdao National Laboratory of Marine Science and Technology (No. QNLM201709);the NSFC-Shandong Joint Fund (No. U1406402) 摘　　要：Theα7 nicotinic acetylcholine receptors(nAChRs)are widely expressed in the central and peripheral nervous systems and are important drug targets for the treatment of neurological diseases.However,differentiation of the agonists and antagonists of the nAChR is difficult.In this study we aimed to develop a reliable and efficient computational approach for differentiation of the agonists from the antagonists of the nAChR based on a systematical analysis of 123 ligands(87 agonists,12 partial agonists,and 24 antagonists)binding with the extracellular domain of theα7 n AChR chimera.Our results suggest that the ligand size and ligand binding affinity cannot differentiate the agonists from the antagonists of the nAChR.The ligand efficiency that considers both ligand binding affinity and size for the agonists is overall more left shifted in comparison to the antagonists,but the values of the ligand efficiency still cannot differentiate the agonists from the antagonists unless the values are either relatively high(more than-0.3 kcal mol^-1)or relatively low(less than-0.45 kcal mol^-1).Our results suggest that accurate prediction of the agonist or antagonist of the nAChR is challenging and the ligand innate configuration has to be considered as an extra for differentiation of the agonists from the antagonists of the nAChR. 关 键 词：NICOTINIC ACETYLCHOLINE RECEPTORS LIGAND efficacy LIGAND BINDING AFFINITY LIGAND efficiency