The Role of Orthosteric Building Blocks of Bitopic Ligands for Muscarinic M1 Receptors
Zitieren Sie bitte immer diese URN: urn:nbn:de:bvb:20-opus-230548
- The muscarinic M\(_1\) acetylcholine receptor is an important drug target for the treatment of various neurological disorders. Designing M\(_1\) receptor-selective drugs has proven challenging, mainly due to the high conservation of the acetylcholine binding site among muscarinic receptor subtypes. Therefore, less conserved and topographically distinct allosteric binding sites have been explored to increase M\(_1\) receptor selectivity. In this line, bitopic ligands, which target orthosteric and allosteric binding sites simultaneously, mayThe muscarinic M\(_1\) acetylcholine receptor is an important drug target for the treatment of various neurological disorders. Designing M\(_1\) receptor-selective drugs has proven challenging, mainly due to the high conservation of the acetylcholine binding site among muscarinic receptor subtypes. Therefore, less conserved and topographically distinct allosteric binding sites have been explored to increase M\(_1\) receptor selectivity. In this line, bitopic ligands, which target orthosteric and allosteric binding sites simultaneously, may provide a promising strategy. Here, we explore the allosteric, M1-selective BQCAd scaffold derived from BQCA as a starting point for the design, synthesis, and pharmacological evaluation of a series of novel bitopic ligands in which the orthosteric moieties and linker lengths are systematically varied. Since β-arrestin recruitment seems to be favorable to therapeutic implication, all the compounds were investigated by G protein and β-arrestin assays. Some bitopic ligands are partial to full agonists for G protein activation, some activate β-arrestin recruitment, and the degree of β-arrestin recruitment varies according to the respective modification. The allosteric BQCAd scaffold controls the positioning of the orthosteric ammonium group of all ligands, suggesting that this interaction is essential for stimulating G protein activation. However, β-arrestin recruitment is not affected. The novel set of bitopic ligands may constitute a toolbox to study the requirements of β-arrestin recruitment during ligand design for therapeutic usage.…
Autor(en): | Daniela Volpato, Michael Kauk, Regina Messerer, Marcel Bermudez, Gerhard Wolber, Andreas Bock, Carsten Hoffmann, Ulrike Holzgrabe |
---|---|
URN: | urn:nbn:de:bvb:20-opus-230548 |
Dokumentart: | Artikel / Aufsatz in einer Zeitschrift |
Institute der Universität: | Fakultät für Chemie und Pharmazie / Institut für Pharmazie und Lebensmittelchemie |
Sprache der Veröffentlichung: | Englisch |
Titel des übergeordneten Werkes / der Zeitschrift (Englisch): | ACS Omega |
Erscheinungsjahr: | 2020 |
Band / Jahrgang: | 5 |
Heft / Ausgabe: | 49 |
Seitenangabe: | 31706–31715 |
Originalveröffentlichung / Quelle: | ACS Omega 2020, 5(49), 31706−31715. https://dx.doi.org/10.1021/acsomega.0c04220 |
DOI: | https://doi.org/10.1021/acsomega.0c04220 |
Allgemeine fachliche Zuordnung (DDC-Klassifikation): | 5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften |
Freie Schlagwort(e): | muscarinic M1 receptor |
Datum der Freischaltung: | 20.04.2021 |
Sammlungen: | Open-Access-Publikationsfonds / Förderzeitraum 2020 |
Lizenz (Deutsch): | CC BY-NC-ND: Creative-Commons-Lizenz: Namensnennung, Nicht kommerziell, Keine Bearbeitungen 4.0 International |