Chen, Xinyu, Kloeckner, Jessika, Holze, Janine, Zimmermann, Cornelia, Seemann, Wiebke K., Schrage, Ramona, Bock, Andreas ORCID: 0000-0002-6344-6494, Mohr, Klaus, Traenkle, Christian, Holzgrabe, Ulrike ORCID: 0000-0002-0364-7278 and Decker, Michael ORCID: 0000-0002-6773-6245 (2015). Rational Design of Partial Agonists for the Muscarinic M-1 Acetylcholine Receptor. J. Med. Chem., 58 (2). S. 560 - 577. WASHINGTON: AMER CHEMICAL SOC. ISSN 1520-4804

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Abstract

Aiming to design partial agonists for a G-protein-coupled receptor based on dynamic ligand binding, we synthesized three different series of bipharmacophoric ligands composed of the orthosteric building blocks iperoxo and 1 linked to allosteric modulators (BQCA-derived compounds, BQCAd; TBPB-derived compound, TBPBd). Their interactions were studied with the human muscarinic acetylcholine M-1-receptor (hM(1)) with respect to receptor binding and G(q)-protein signaling. Results demonstrate that iperoxo/BQCAd (2, 3) and 1/BQCAd hybrids (4) act as M1 partial agonists, whereas 1/TBPBd hybrids (5) did not activate M-1-receptors. Among the iperoxo/BQCAd-hybrids, spacer length in conjunction with the pattern of substitution tuned efficacy. Most interestingly, a model of dynamic ligand binding revealed that the spacer length of 2a and 3a controlled the probability of switch between the inactive purely allosteric and the active bitopic orthosteric/allosteric binding pose. In summary, dynamic ligand binding can be exploited in M-1 receptors to design partial agonists with graded efficacy.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Chen, XinyuUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kloeckner, JessikaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Holze, JanineUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zimmermann, CorneliaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Seemann, Wiebke K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schrage, RamonaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bock, AndreasUNSPECIFIEDorcid.org/0000-0002-6344-6494UNSPECIFIED
Mohr, KlausUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Traenkle, ChristianUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Holzgrabe, UlrikeUNSPECIFIEDorcid.org/0000-0002-0364-7278UNSPECIFIED
Decker, MichaelUNSPECIFIEDorcid.org/0000-0002-6773-6245UNSPECIFIED
URN: urn:nbn:de:hbz:38-414436
DOI: 10.1021/jm500860w
Journal or Publication Title: J. Med. Chem.
Volume: 58
Number: 2
Page Range: S. 560 - 577
Date: 2015
Publisher: AMER CHEMICAL SOC
Place of Publication: WASHINGTON
ISSN: 1520-4804
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
PROTEIN-COUPLED RECEPTORS; ALLOSTERIC MODULATION; BITOPIC LIGANDS; ACTIVATION; SITE; INTERNALIZATION; MECHANISMS; EMPHASIS; DISEASE; ANALOGSMultiple languages
Chemistry, MedicinalMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/41443

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