Bisphosphonic acids as effective inhibitors of<i>Mycobacterium tuberculosis</i>glutamine synthetase
作者:Paulina Kosikowska、Marta Bochno、Katarzyna Macegoniuk、Giuseppe Forlani、Paweł Kafarski、Łukasz Berlicki
DOI:10.3109/14756366.2015.1070846
日期:2016.11.1
Inhibition of glutamine synthetase (GS) is one of the most promising strategies for the discovery of novel drugs against tuberculosis. Forty-three bisphosphonic and bis-H-phosphinic acids of various scaffolds, bearing aromatic substituents, were screened against recombinant GS from Mycobacterium tuberculosis. Most of the studied compounds exhibited activities in micromolar range, with N-(3,5-dichlorophenyl)-2-aminoethylidenebisphoshonic acid, N-(3,5difluorophenyl)-2-aminoethylidene-bisphoshonic acid and N-(3,4-dichlorophenyl)-1-hydroxy1,1-ethanebisphosphonic acid showing the highest potency with kinetic parameters similar to the reference compound - L-methionine-S-sulfoximine. Moreover, these inhibitors were found to be much more effective against pathogen enzyme than against the human ortholog. Thus, with the bone-targeting properties of the bisphosphonate compounds in mind, this activity/selectivity profile makes these compounds attractive agents for the treatment of bone tuberculosis.