PMID- 32961824 OWN - NLM STAT- MEDLINE DCOM- 20210310 LR - 20210310 IS - 1420-3049 (Electronic) IS - 1420-3049 (Linking) VI - 25 IP - 18 DP - 2020 Sep 19 TI - Adenosine Receptor Ligands: Coumarin-Chalcone Hybrids as Modulating Agents on the Activity of hARs. LID - 10.3390/molecules25184306 [doi] LID - 4306 AB - Adenosine receptors (ARs) play an important role in neurological and psychiatric disorders such as Alzheimer's disease, Parkinson's disease, epilepsy and schizophrenia. The different subtypes of ARs and the knowledge on their densities and status are important for understanding the mechanisms underlying the pathogenesis of diseases and for developing new therapeutics. Looking for new scaffolds for selective AR ligands, coumarin-chalcone hybrids were synthesized (compounds 1-8) and screened in radioligand binding (hA(1), hA(2A) and hA(3)) and adenylyl cyclase (hA(2B)) assays in order to evaluate their affinity for the four human AR subtypes (hARs). Coumarin-chalcone hybrid has been established as a new scaffold suitable for the development of potent and selective ligands for hA(1) or hA(3) subtypes. In general, hydroxy-substituted hybrids showed some affinity for the hA(1), while the methoxy counterparts were selective for the hA(3). The most potent hA(1) ligand was compound 7 (K(i) = 17.7 microM), whereas compound 4 was the most potent ligand for hA(3) (K(i) = 2.49 microM). In addition, docking studies with hA(1) and hA(3) homology models were established to analyze the structure-function relationships. Results showed that the different residues located on the protein binding pocket could play an important role in ligand selectivity. FAU - Vazquez-Rodriguez, Saleta AU - Vazquez-Rodriguez S AD - Departamento de Quimica Organica, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain. FAU - Vilar, Santiago AU - Vilar S AD - Departamento de Quimica Organica, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain. FAU - Kachler, Sonja AU - Kachler S AD - Institut fur Pharmakologie und Toxikologie, Universitat Wurzburg, 97078 Wurzburg, Germany. FAU - Klotz, Karl-Norbert AU - Klotz KN AD - Institut fur Pharmakologie und Toxikologie, Universitat Wurzburg, 97078 Wurzburg, Germany. FAU - Uriarte, Eugenio AU - Uriarte E AD - Departamento de Quimica Organica, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain. AD - Instituto de Ciencias Quimicas Aplicadas, Universidad Autonoma de Chile, 7500912 Santiago, Chile. FAU - Borges, Fernanda AU - Borges F AD - CIQUP/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua Campo Alegre 687, 4169-007 Porto, Portugal. FAU - Matos, Maria Joao AU - Matos MJ AD - Departamento de Quimica Organica, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain. AD - CIQUP/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua Campo Alegre 687, 4169-007 Porto, Portugal. LA - eng GR - ED481B 2014/027-0, ED481B 2014/086-0 and ED481B 2018/007/Xunta de Galicia/ GR - CEECIND/02423/2018/Fundacao para a Ciencia e Tecnologia/ PT - Journal Article DEP - 20200919 PL - Switzerland TA - Molecules JT - Molecules (Basel, Switzerland) JID - 100964009 RN - 0 (Chalcones) RN - 0 (Ligands) RN - 0 (Receptor, Adenosine A1) RN - 0 (Receptor, Adenosine A2A) RN - 0 (Receptor, Adenosine A3) RN - 5S5A2Q39HX (Chalcone) SB - IM MH - Binding Sites MH - Chalcone/*chemistry/metabolism MH - Chalcones/*chemistry/metabolism MH - Drug Design MH - Humans MH - Kinetics MH - Ligands MH - Molecular Docking Simulation MH - Protein Binding MH - Receptor, Adenosine A1/chemistry/*metabolism MH - Receptor, Adenosine A2A/chemistry/*metabolism MH - Receptor, Adenosine A3/chemistry/*metabolism MH - Structure-Activity Relationship PMC - PMC7571217 OTO - NOTNLM OT - adenosine receptors OT - binding affinity OT - chalcone OT - coumarin OT - docking OT - neurodegenerative diseases COIS- The authors declare no conflict of interest. EDAT- 2020/09/24 06:00 MHDA- 2021/03/11 06:00 PMCR- 2020/09/19 CRDT- 2020/09/23 01:02 PHST- 2020/08/27 00:00 [received] PHST- 2020/09/15 00:00 [revised] PHST- 2020/09/18 00:00 [accepted] PHST- 2020/09/23 01:02 [entrez] PHST- 2020/09/24 06:00 [pubmed] PHST- 2021/03/11 06:00 [medline] PHST- 2020/09/19 00:00 [pmc-release] AID - molecules25184306 [pii] AID - molecules-25-04306 [pii] AID - 10.3390/molecules25184306 [doi] PST - epublish SO - Molecules. 2020 Sep 19;25(18):4306. doi: 10.3390/molecules25184306.