Abstract:
:Retinoic acid receptor-related orphan receptor γt (RORγt) is a nuclear receptor associated with the pathogenesis of autoimmune diseases. Allosteric inhibition of RORγt is conceptually new, unique for this specific nuclear receptor, and offers advantages over traditional orthosteric inhibition. Here, we report a highly efficient in silico-guided approach that led to the discovery of novel allosteric RORγt inverse agonists with a distinct isoxazole chemotype. The the most potent compound, 25 (FM26), displayed submicromolar inhibition in a coactivator recruitment assay and effectively reduced IL-17a mRNA production in EL4 cells, a marker of RORγt activity. The projected allosteric mode of action of 25 was confirmed by biochemical experiments and cocrystallization with the RORγt ligand binding domain. The isoxazole compounds have promising pharmacokinetic properties comparable to other allosteric ligands but with a more diverse chemotype. The efficient ligand-based design approach adopted demonstrates its versatility in generating chemical diversity for allosteric targeting of RORγt.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Meijer FA,Doveston RG,de Vries RMJM,Vos GM,Vos AAA,Leysen S,Scheepstra M,Ottmann C,Milroy LG,Brunsveld Ldoi
10.1021/acs.jmedchem.9b01372subject
Has Abstractpub_date
2020-01-09 00:00:00pages
241-259issue
1eissn
0022-2623issn
1520-4804journal_volume
63pub_type
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