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Exploring the chemical space of ureidothiophene-2-carboxylic acids as inhibitors of the quorum sensing enzyme PqsD from Pseudomonas aeruginosa.
Sahner, J Henning Kamal, Ahmed Weidel, Elisabeth Groh, Matthias Börger, Carsten Hartmann, Rolf W
Sahner, J Henning
Kamal, Ahmed
Weidel, Elisabeth
Groh, Matthias
Börger, Carsten
Hartmann, Rolf W
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2015-05-26
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original manuscript
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supplementary data
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Abstract
Pseudomonas aeruginosa employs a quorum sensing (QS) communication system that makes use of small diffusible molecules. Among other effects, the QS system coordinates the formation of biofilm which decisively contributes to difficulties in the therapy of Pseudomonas infections. The present work deals with the structure-activity exploration of ureidothiophene-2-carboxylic acids as inhibitors of PqsD, a key enzyme in the biosynthetic pathway of signal molecules in the Pseudomonas QS system. We describe an improvement of the inhibitory activity by successfully combining features from two different PqsD inhibitor classes. Furthermore the functional groups, which are responsible for the inhibitory potency, were identified. Moreover, the inability of the new inhibitors, to prevent signal molecule formation in whole cell assays, is discussed.
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Exploring the chemical space of ureidothiophene-2-carboxylic acids as inhibitors of the quorum sensing enzyme PqsD from Pseudomonas aeruginosa. 2015, 96:14-21 Eur J Med Chem
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en
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ISSN
1768-3254