Xue, XiaohuaSoroosh, PejmanDe Leon-Tabaldo, AimeeLuna-Roman, RosaSablad, MarcianoRozenkrants, NatashaYu, JingxueCastro, GlendaBanie, HomayonFung-Leung, Wai-PingSantamaria Babí, Luis F.Schlueter, ThomasAlbers, MichaelLeonard, KristiBudelsky, Alison L.Fourie, Anne M.2017-10-112017-10-112016-12-012045-2322https://hdl.handle.net/2445/116509The IL-23/IL-17 pathway is implicated in autoimmune diseases, particularly psoriasis, where biologics targeting IL-23 and IL-17 have shown significant clinical efficacy. Retinoid-related orphan nuclear receptor gamma t (RORγt) is required for Th17 differentiation and IL-17 production in adaptive and innate immune cells. We identified JNJ-54271074, a potent and highly-selective RORγt inverse agonist, which dose-dependently inhibited RORγt-driven transcription, decreased co-activator binding and promoted interaction with co-repressor protein. This compound selectively blocked Th17 differentiation, significantly reduced IL-17A production from memory T cells, and decreased IL-17A- and IL-22-producing human and murine γδ and NKT cells. In a murine collagen-induced arthritis model, JNJ-54271074 dose-dependently suppressed joint inflammation. Furthermore, JNJ-54271074 suppressed IL-17A production in human PBMC from rheumatoid arthritis patients. RORγt-deficient mice showed decreased IL-23-induced psoriasis-like skin inflammation and cytokine gene expression, consistent with dose-dependent inhibition in wild-type mice through oral dosing of JNJ-54271074. In a translational model of human psoriatic epidermal cells and skin-homing T cells, JNJ-54271074 selectively inhibited streptococcus extract-induced IL-17A and IL-17F. JNJ-54271074 is thus a potent, selective RORγt modulator with therapeutic potential in IL-23/IL-17 mediated autoimmune diseases.17 p.application/pdfengcc-by (c) Xue et al., 2016http://creativecommons.org/licenses/by/3.0/esArtritisProteïnesPsoriasiFarmacologiaArthritisProteinsPsoriasisPharmacologyinfo:eu-repo/semantics/article6677992017-10-11info:eu-repo/semantics/openAccess27905482