Design, Synthesis, and Discovery of a Novel CCR1 Antagonist
Autor: | Yoshikazu Iwasawa, Daisuke Ichikawa, Kazuhito Noguchi, Yufu Sagara, Akira Naya, Norikazu Ohtake, Toshihiko Saeki, Kenji Ohwaki |
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Rok vydání: | 2001 |
Předmět: |
CCR1
Chemokine medicine.drug_class Receptors CCR1 CHO Cells Immune receptor Transfection Cell Line Mice Radioligand Assay Structure-Activity Relationship Piperidines Cricetinae Drug Discovery medicine Animals Combinatorial Chemistry Techniques Humans Structure–activity relationship Receptor biology Chemistry Antagonist Chemotaxis Receptor antagonist Amides Xanthenes Biochemistry Drug Design biology.protein Molecular Medicine Calcium Receptors Chemokine |
Zdroj: | Journal of Medicinal Chemistry. 44:1429-1435 |
ISSN: | 1520-4804 0022-2623 |
Popis: | The CC chemokines may play an important role in the pathogenesis of chronic inflammatory diseases including rheumatoid arthritis, and their effects are thought to be mediated through CCR1 receptors. Several nonpeptide CCR1 receptor antagonists that showed high affinity for human CCR1 receptors have been identified; however, their effectiveness in animal models of inflammatory diseases has been scarcely demonstrated, probably due to species selectivity of the antagonists. To elucidate the pathophysiological role of CCR1 receptors in murine models of disease, we looked for a potent antagonist for both murine and human CCR1 receptors. Screening of our chemical collection for inhibition of (125)I-MIP-1alpha binding to human CCR1 receptors transfected in CHO cells led to the identification of xanthene-9-carboxamide 1a as the lead compound. Derivatization of 1a by quaternarizing the piperidine nitrogen with various alkyl groups and by installing substituents into the xanthene moiety dramatically improved the inhibitory activity against both human and murine CCR1 receptors. As a result, 2q-1 showing IC(50) values of 0.9 and 5.8 nM for human and murine CCR1 receptors, respectively, was discovered. This compound is the first murine CCR1 receptor antagonist and may be a useful tool for clarifying the role of CCR1 receptors in murine models of disease. |
Databáze: | OpenAIRE |
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