Discovery of Novel Agonists and Antagonists of the Free Fatty Acid Receptor 1 (FFAR1) Using Virtual Screening

The G-protein-coupled receptor free fatty acid receptor 1 (FFAR1), previously named GPR40, is a possible novel target for the treatment of type 2 diabetes. In an attempt to identify new ligands for this receptor, we performed virtual screening (VS) based on two-dimensional (2D) similarity, three-dim...

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Published inJournal of medicinal chemistry Vol. 51; no. 3; pp. 625 - 633
Main Authors Tikhonova, Irina G, Sum, Chi Shing, Neumann, Susanne, Engel, Stanislav, Raaka, Bruce M, Costanzi, Stefano, Gershengorn, Marvin C
Format Journal Article
LanguageEnglish
Published Washington, DC American Chemical Society 14.02.2008
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Summary:The G-protein-coupled receptor free fatty acid receptor 1 (FFAR1), previously named GPR40, is a possible novel target for the treatment of type 2 diabetes. In an attempt to identify new ligands for this receptor, we performed virtual screening (VS) based on two-dimensional (2D) similarity, three-dimensional (3D) pharmacophore searches, and docking studies by using the structure of known agonists and our model of the ligand binding site, which was validated by mutagenesis. VS of a database of 2.6 million compounds followed by extraction of structural neighbors of functionally confirmed hits resulted in identification of 15 compounds active at FFAR1 either as full agonists, partial agonists, or pure antagonists. Site-directed mutagenesis and docking studies revealed different patterns of ligand–receptor interactions and provided important information on the role of specific amino acids in binding and activation of FFAR1.
Bibliography:Table enlisting the 52 compounds selected by virtual screening and experimentally tested. Docking poses of selected compounds at FFAR1. This material is available free of charge via the Internet at http://pubs.acs.org.
ark:/67375/TPS-TVFR3F49-B
istex:09792D9E9C9EB29D58AC7A379F60E07AFC7A16A8
ISSN:0022-2623
1520-4804
DOI:10.1021/jm7012425