Developing Inhibitors of the p47phox–p22phox Protein–Protein Interaction by Fragment-Based Drug Discovery
作者:Sara Marie Øie Solbak、Jie Zang、Dilip Narayanan、Lars Jakobsen Høj、Saskia Bucciarelli、Charlotte Softley、Sebastian Meier、Annette Eva Langkilde、Charlotte Held Gotfredsen、Michael Sattler、Anders Bach
DOI:10.1021/acs.jmedchem.9b01492
日期:2020.2.13
Nicotinamide adenine dinucleotide phosphate oxidase isoform 2 is an enzyme complex, which generates reactive oxygen species and contributes to oxidative stress. The p47phox-p22phox interaction is critical for the activation of the catalytical NOX2 domain, and p47phox is a potential target for therapeutic intervention. By screening 2500 fragments using fluorescence polarization and a thermal shift assay and validation by surface plasmon resonance, we found eight hits toward the tandem SH3 domain of p47phox (p47phox(SH3A-B)) with K-D values of 400-600 mu M. Structural studies revealed that fragments 1 and 2 bound two separate binding sites in the elongated conformation of p47phox(SH3A-B) and these competed with p22phox for binding to p47phox(SH3A-B). Chemical optimization led to a dimeric compound with the ability to potently inhibit the p47phox(SH3A-B)-p22phox interaction (K-i of 20 mu M). Thereby, we reveal a new way of targeting p47phox and present the first report of drug-like molecules with the ability to bind p47phox and inhibit its interaction with p22phox.
[EN] SMALL-MOLECULE NADPH OXIDASE 2 INHIBITORS<br/>[FR] INHIBITEURS DE NADPH OXYDASE 2 À PETITE MOLÉCULE
申请人:UNIV COPENHAGEN
公开号:WO2021105497A1
公开(公告)日:2021-06-03
The invention provides compounds of Formula (II) which comprise two terminal 2-aminoquinoline moieties. They are novel and potent inhibitors of the p47phox-p22phox protein-protein interaction that can inhibit the assembly and thus activation of the multisubunit and superoxide-generating NADPH oxidase 2 complex. The compounds are therapeutically relevant as they can reduce cell damage in diseases where NADPH oxidase 2 is a major contributor to generation of reactive oxygen species (ROS) and oxidative stress.
quinoline units acting as primary coordinating sites connected by tetra- or penta-ethyleneoxy fragments behaving as secondary interaction sites leads spontaneously in a one-pot reaction to the formation of tri- and terta-nuclear metalla-organic knots in the presence of silver cation.