Targeting Acidic Mammalian chitinase Is Effective in Animal Model of Asthma
摘要:
This article highlights our work toward the identification of a potent, selective, and efficacious acidic mammalian chitinase (AMCase) inhibitor. Rational-design, guided by X-ray analysis of several inhibitors bound to human chitotriosidase (hCHIT1), led to the identification of compound 7f as a highly potent AMCase inhibitor (IC50 values of 14 and 19 nM against human and mouse enzyme, respectively) and selective (>150X against mCHIT1) with very good PK properties. This compound dosed once daily at 30 mg/kg po showed significant anti-inflammatory efficacy in HDM-induced allergic airway inflammation in mice, reducing inflammatory cell influx in the BALF and total IgE concentration in plasma, which correlated with decrease of chitinolytic activity. Therapeutic efficacy Of compound 7f in the clinically relevant aeroallergen-induced acute asthma model in mice provides a rationale for developing AMCase inhibitor for the treatment of asthma.
Small, non-peptide C5a receptor antagonists: Part 1
作者:Julian Blagg、Charles Mowbray、David C. Pryde、Gary Salmon、Esther Schmid、David Fairman、Kevin Beaumont
DOI:10.1016/j.bmcl.2008.08.106
日期:2008.10
The optimisation of a series of amides for C5a receptor binding and functional activity, and physicochemical properties is described. The initial hit, 1 (IC(50) 1 mu M), was discovered during high throughput screening, from which highly potent C5a receptor antagonists (e. g. 14, IC(50) 5 nM) were developed. (C) 2008 Elsevier Ltd. All rights reserved.