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- W2127128579 abstract "Pseudomonas aeruginosa uses N-acylated l-homoserine lactone signals and a triumvirate of LuxR-type receptor proteins—LasR, RhlR, and QscR—for quorum sensing (QS). Each of these receptors can contribute to QS activation or repression and, thereby, the control of myriad virulence phenotypes in this pathogen. LasR has traditionally been considered to be at the top of the QS receptor hierarchy in P. aeruginosa; however, recent reports suggest that RhlR plays a more prominent role in infection than originally predicted, in some circumstances superseding that of LasR. Herein, we report the characterization of a set of synthetic, small-molecule agonists and antagonists of RhlR. Using E. coli reporter strains, we demonstrated that many of these compounds can selectively activate or inhibit RhlR instead of LasR and QscR. Moreover, several molecules maintain their activities in P. aeruginosa at concentrations analogous to native RhlR signal levels. These compounds represent useful chemical probes to study the role of RhlR in the complex QS circuitry of P. aeruginosa, its direct (and indirect) effects on virulence, and its overall merit as a target for anti-infective therapy." @default.
- W2127128579 created "2016-06-24" @default.
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- W2127128579 date "2015-10-13" @default.
- W2127128579 modified "2023-10-17" @default.
- W2127128579 title "Potent and Selective Modulation of the RhlR Quorum Sensing Receptor by Using Non-native Ligands: An Emerging Target for Virulence Control in<i>Pseudomonas aeruginosa</i>" @default.
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- W2127128579 doi "https://doi.org/10.1002/cbic.201500357" @default.
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