G-Protein-Coupled Bile Acid Receptor 1 (GPBAR1, TGR5) Agonists Reduce the Production of Proinflammatory Cytokines and Stabilize the Alternative Macrophage Phenotype
摘要:
GPBAR1 (also known as TGR5) is a G-protein-coupled receptor (GPCR) that triggers intracellular signals upon ligation by various bile acids. The receptor has been studied mainly for its function in energy expenditure and glucose homeostasis, and there is little information on the role of GPBAR1 in the context of inflammation. After a high-throughput screening campaign, we identified isonicotinamides exemplified by compound 3 as nonsteroidal GPBAR1 agonists. We optimized this series to potent derivatives that are active on both human and murine GPBAR1. These agonists inhibited the secretion of the proinflammatory cytokines TNF-alpha and IL-12 but not the antiinflammatory IL-10 in primary human monocytes. These effects translate in vivo, as compound 15 inhibits LPS induced TNF-alpha and IL-12 release in mice. The response was GPBAR1 dependent, as demonstrated using knockout mice. Furthermore, agonism of GPBAR1 stabilized the phenotype of the alternative, noninflammatory, M2-like type cells during differentiation of monocytes into macrophages. Overall, our results illustrate an important regulatory role for GPBAR1 agonists as controllers of inflammation.
PYRIDAZINE-, PYRIDINE- AND PYRANE-DERIVATIVES AS GPBAR1 AGONISIS
申请人:Novartis AG
公开号:EP2146970A1
公开(公告)日:2010-01-27
[EN] PYRIDAZINE-, PYRIDINE- AND PYRANE-DERIVATIVES AS GPBAR1 AGONISIS<br/>[FR] DÉRIVÉS DE PYRIDAZINE, DE PYRIDINE ET DE PYRANE EN TANT QU'AGONISTES DE GPBARL
申请人:NOVARTIS AG
公开号:WO2008125627A1
公开(公告)日:2008-10-23
[EN] A compound of formula (I) wherein the substituents have various meanings, optionally in salt and/or solvate form, and their use as pharmaceuticals. [FR] L'invention porte sur un composé de formule (I) dans laquelle les substituants ont diverses significations, facultativement sous forme de sel et/ou de solvate, et sur leur utilisation comme produits pharmaceutiques.