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Discovery of a Novel Class of Dual GPBAR1 Agonists-RORγt Inverse Agonists for the Treatment of IL-17-Mediated Disorders.

ABSTRACT: Retinoic acid receptor-related orphan receptor γ-t (RORγt) and GPBAR1, a transmembrane G-protein-coupled receptor for bile acids, are attractive drug targets to develop clinically relevant small modulators as potent therapeutics for autoimmune diseases. Herein, we designed, synthesized, and evaluated several new bile acid-derived ligands with potent dual activity. Furthermore, we performed molecular docking and MD calculations of the best dual modulators in the two targets to identify the binding modes as well as to better understand the molecular basis of the inverse agonism of RORγt by bile acid derivatives. Among these compounds, 7 was identified as a GPBAR1 agonist (EC₅₀ 5.9 μM) and RORγt inverse agonist (IC₅₀ 0.107 μM), with excellent pharmacokinetic properties. Finally, the most promising ligand displayed robust anti-inflammatory activity in vitro and in vivo in a mouse model of 2,4,6-trinitrobenzene sulfonic acid (TNBS)-induced colitis.

SUBMITTER: Fiorillo B

PROVIDER: S-EPMC9933477 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature

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Discovery of a Novel Class of Dual GPBAR1 Agonists-RORγt Inverse Agonists for the Treatment of IL-17-Mediated Disorders.

Fiorillo Bianca B Roselli Rosalinda R Finamore Claudia C Biagioli Michele M di Giorgio Cristina C Bordoni Martina M Conflitti Paolo P Marchianò Silvia S Bellini Rachele R Rapacciuolo Pasquale P Cassiano Chiara C Limongelli Vittorio V Sepe Valentina V Catalanotti Bruno B Fiorucci Stefano S Zampella Angela A

ACS omega 20230131 6

Retinoic acid receptor-related orphan receptor γ-t (RORγt) and GPBAR1, a transmembrane G-protein-coupled receptor for bile acids, are attractive drug targets to develop clinically relevant small modulators as potent therapeutics for autoimmune diseases. Herein, we designed, synthesized, and evaluated several new bile acid-derived ligands with potent dual activity. Furthermore, we performed molecular docking and MD calculations of the best dual modulators in the two targets to identify the bindin ...[more]

PMID: 36816679

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Project description:BackgroundRORγt is a transcription factor that enables elaboration of Th17-associated cytokines (including IL-17 and IL-22) and is proposed as a pharmacological target for severe asthma.MethodsIL-17 immunohistochemistry was performed in severe asthma bronchial biopsies (specificity confirmed with in situ hybridization). Primary human small airway epithelial cells in air liquid interface and primary bronchial smooth muscle cells were stimulated with recombinant human IL-17 and/or IL-22 and pro-inflammatory cytokines measured. Balb/c mice were challenged intratracheally with IL-17 and/or IL-22 and airway hyperreactivity, pro-inflammatory cytokines and airway neutrophilia measured. Balb/c mice were sensitized intraperitoneally and challenged intratracheally with house dust mite extract and the effect of either a RORγt inhibitor (BIX119) or an anti-IL-11 antibody assessed on airway hyperreactivity, pro-inflammatory cytokines and airway neutrophilia measured.ResultsWe confirmed in severe asthma bronchial biopsies both the presence of IL-17-positive lymphocytes and that an IL-17 transcriptome profile in a severe asthma patient sub-population. Both IL-17 and IL-22 stimulated the release of pro-inflammatory cytokine and chemokine release from primary human lung cells and in mice. Furthermore, IL-22 in combination with IL-17, but neither alone, elicits airway hyperresponsiveness (AHR) in naïve mice. A RORγt inhibitor specifically blocked both IL-17 and IL-22, AHR and neutrophilia in a mouse house dust mite model unlike other registered or advanced pipeline modes of action. Full efficacy versus these parameters was associated with 90% inhibition of IL-17 and 50% inhibition of IL-22. In contrast, anti-IL-17 also blocked IL-17, but not IL-22, AHR or neutrophilia. Moreover, the deregulated genes in the lungs from these mice correlated well with deregulated genes from severe asthma biopsies suggesting that this model recapitulates significant severe asthma-relevant biology. Furthermore, these genes were reversed upon RORγt inhibition in the HDM model. Cell deconvolution suggested that the responsible cells were corticosteroid insensitive γδ-T-cells.ConclusionThese data strongly suggest that both IL-17 and IL-22 are required for Th2-low endotype associated biology and that a RORγt inhibitor may provide improved clinical benefit in a severe asthma sub-population of patients by blocking both IL-17 and IL-22 biology compared with blocking IL-17 alone.

Dataset Information

Discovery of a Novel Class of Dual GPBAR1 Agonists-RORγt Inverse Agonists for the Treatment of IL-17-Mediated Disorders.

Publications

Discovery of a Novel Class of Dual GPBAR1 Agonists-RORγt Inverse Agonists for the Treatment of IL-17-Mediated Disorders.

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