Overcoming the Unexpected Functional Inversion of a PqsR Antagonist in Pseudomonas aeruginosa: An In Vivo Potent Antivirulence Agent Targeting pqs Quorum Sensing
The virulence regulator PqsR of Pseudomonas aeruginosa is considered as an attractive target for attenuating the bacterial pathogenicity without eliciting resistance. However, despite efforts and desires, no promising PqsR antagonist has been discovered thus far. Now, a surprising functionality chan...
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Published in | Angewandte Chemie Vol. 126; no. 4; pp. 1127 - 1130 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English German |
Published |
Weinheim
WILEY-VCH Verlag
20.01.2014
WILEY‐VCH Verlag |
Subjects | |
Online Access | Get full text |
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Summary: | The virulence regulator PqsR of Pseudomonas aeruginosa is considered as an attractive target for attenuating the bacterial pathogenicity without eliciting resistance. However, despite efforts and desires, no promising PqsR antagonist has been discovered thus far. Now, a surprising functionality change of a highly affine PqsR antagonist in P. aeruginosa is revealed, which is mediated by a bacterial signal molecule synthase and responsible for low cellular potency. Blockade of the susceptible position led to the discovery of the first antivirulence compound that is potent in vivo and targets PqsR, thus providing a proof of concept for this novel antivirulence therapy.
Ohne Kommunikation keine Infektion: Der erste PqsR‐Antagonist mit In‐vivo‐Aktivität, der die interzelluläre Kommunikation in P. aeruginosa unterbricht, wurde durch die Vermeidung einer unerwarteten Funktionalitätsumkehr entdeckt, die von einer bakteriellen Signalmolekül‐Synthase verursacht wird. Der entwickelte Antagonist 1 schützt G. mellonella‐Larven bereits bei geringer Dosierung vor einer bakteriellen Infektion. |
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Bibliography: | ArticleID:ANGE201307547 We thank Drs. Daniele Bano and Kostoula Troullinaki (German Center for Neurodegenerative Diseases, Bonn, Germany) for providing C. elegans, Dr. Matthew Wand (Health Protection Agency, Salisbury, UK) for valuable advice regarding the G. mellonella infection model, and Dr. Andrea Braunshausen for helpful discussions. pqs=Pseudomonas quinolone signal. istex:8EEB9A7B8AB1517237F5FA1EF6DE3C1293180106 ark:/67375/WNG-T0QT2T4G-3 These authors contributed equally to this work. C. elegans pqs Dr. Matthew Wand (Health Protection Agency, Salisbury, UK) for valuable advice regarding the G. mellonella Pseudomonas = infection model, and Dr. Andrea Braunshausen for helpful discussions. quinolone signal. We thank Drs. Daniele Bano and Kostoula Troullinaki (German Center for Neurodegenerative Diseases, Bonn, Germany) for providing |
ISSN: | 0044-8249 1521-3757 |
DOI: | 10.1002/ange.201307547 |