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5-HT2C Receptor Structures Reveal the Structural Basis of GPCR Polypharmacology
Author(s) -
Yao Peng,
John D. McCorvy,
Kasper Harpsøe,
Katherine Lansu,
Shuguang Yuan,
Petr Popov,
Lu Qu,
Mengchen Pu,
Tao Che,
Louise F. Nikolajsen,
XiPing Huang,
Yiran Wu,
Ling Shen,
Walden E. BjørnYoshimoto,
Kang Ding,
Daniel Wacker,
Gye Won Han,
Jianjun Cheng,
Vsevolod Katritch,
Anders A. Jensen,
Michael A. Hanson,
Suwen Zhao,
David E. Gloriam,
Bryan L. Roth,
Raymond C. Stevens,
ZhiJie Liu
Publication year - 2018
Publication title -
cell
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 26.304
H-Index - 776
eISSN - 1097-4172
pISSN - 0092-8674
DOI - 10.1016/j.cell.2018.01.001
Subject(s) - 5 ht2c receptor , g protein coupled receptor , ritanserin , biology , functional selectivity , receptor , drug discovery , inverse agonist , computational biology , agonist , pharmacology , neuroscience , bioinformatics , 5 ht receptor , serotonin , genetics
Drugs frequently require interactions with multiple targets-via a process known as polypharmacology-to achieve their therapeutic actions. Currently, drugs targeting several serotonin receptors, including the 5-HT 2C receptor, are useful for treating obesity, drug abuse, and schizophrenia. The competing challenges of developing selective 5-HT 2C receptor ligands or creating drugs with a defined polypharmacological profile, especially aimed at G protein-coupled receptors (GPCRs), remain extremely difficult. Here, we solved two structures of the 5-HT 2C receptor in complex with the highly promiscuous agonist ergotamine and the 5-HT 2A-C receptor-selective inverse agonist ritanserin at resolutions of 3.0 Å and 2.7 Å, respectively. We analyzed their respective binding poses to provide mechanistic insights into their receptor recognition and opposing pharmacological actions. This study investigates the structural basis of polypharmacology at canonical GPCRs and illustrates how understanding characteristic patterns of ligand-receptor interaction and activation may ultimately facilitate drug design at multiple GPCRs.

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