Identification of Novel Fragments Binding to the PDZ1-2 Domain of PSD-95.

Autor: Zang J; Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100, Copenhagen, Denmark., Ye F; Division of Life Science, Hong Kong University of Science and Technology Clear Water Bay, Kowloon, Hong Kong (China., Solbak SMØ; Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100, Copenhagen, Denmark., Høj LJ; Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100, Copenhagen, Denmark., Zhang M; Division of Life Science, Hong Kong University of Science and Technology Clear Water Bay, Kowloon, Hong Kong (China., Bach A; Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100, Copenhagen, Denmark.
Jazyk: angličtina
Zdroj: ChemMedChem [ChemMedChem] 2021 Mar 18; Vol. 16 (6), pp. 949-954. Date of Electronic Publication: 2020 Dec 30.
DOI: 10.1002/cmdc.202000865
Abstrakt: Inhibition of PSD-95 has emerged as a promising strategy for the treatment of ischemic stroke, as shown with peptide-based compounds that target the PDZ domains of PSD-95. In contrast, developing potent and drug-like small molecules against the PSD-95 PDZ domains has so far been unsuccessful. Here, we explore the druggability of the PSD-95 PDZ1-2 domain and use fragment screening to investigate if this protein is prone to binding small molecules. We screened 2500 fragments by fluorescence polarization (FP) and validated the hits by surface plasmon resonance (SPR), including an inhibition counter-test, and found four promising fragments. Three ligand efficient fragments were shown by 1 H, 15 N HSQC NMR to bind in the small hydrophobic P 0 pockets of PDZ1-2, and one of them underwent structure-activity relationship (SAR) studies. Overall, we demonstrate that fragment screening can successfully be applied to PDZ1-2 of PSD-95 and disclose novel fragments that can serve as starting points for optimization towards small-molecule PDZ domain inhibitors.
(© 2020 Wiley-VCH GmbH.)
Databáze: MEDLINE
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