Inhibitors for Human Glutaminyl Cyclase by Structure Based Design and Bioisosteric Replacement
作者:Mirko Buchholz、Antje Hamann、Susanne Aust、Wolfgang Brandt、Livia Böhme、Torsten Hoffmann、Stephan Schilling、Hans-Ulrich Demuth、Ulrich Heiser
DOI:10.1021/jm900969p
日期:2009.11.26
The inhibition of human glutaminyl cyclase (hQC) has come into focus as a new potential approach for the treatment of Alzheimer's disease. The hallmark of this principle is the prevention of the formation of A beta(3,11(pE)-40,42), as these A beta-species were shown to be of elevated neurotoxicity and likely to act as a seeding core leading to an accelerated formation of A beta-oligomers and fibrils. Starting from 1-(3-(1H-imidazol-1-yl)propyl)-3-(3,4-dimethoxyphenyl)thiourea, bioisosteric replacements led to the development of new classes of inhibitors. The optimization of the metal-binding group was achieved by homology modeling and afforded a first insight into the probable binding mode of the inhibitors in the hQC active site. The efficacy assessment of the hQC inhibitors was performed in cell culture, directly monitoring the inhibition of A beta(3,11(pE)-40,42) formation.