Targeting QseC signaling and virulence for antibiotic development

David A. Rasko, Cristiano G. Moreira, Run Li De, Nicola C. Reading, Jennifer M. Ritchie, Matthew K. Waldor, Noelle S Williams, Ronald Taussig, Shuguang Wei, Michael G Roth, David T. Hughes, Jason F. Huntley, Maggy W. Fina, J R Falck, Vanessa Sperandio

Research output: Contribution to journalArticlepeer-review

411 Scopus citations


Many bacterial pathogens rely on a conserved membrane histidine sensor kinase, QseC, to respond to host adrenergic signaling molecules and bacterial signals in order to promote the expression of virulence factors. Using a high-throughput screen, we identified a small molecule, LED209, that inhibits the binding of signals to QseC, preventing its autophosphorylation and consequently inhibiting QseC-mediated activation of virulence gene expression. LED209 is not toxic and does not inhibit pathogen growth; however, this compound markedly inhibits the virulence of several pathogens in vitro and in vivo in animals. Inhibition of signaling offers a strategy for the development of broad-spectrum antimicrobial drugs.

Original languageEnglish (US)
Pages (from-to)1078-1080
Number of pages3
Issue number5892
StatePublished - Aug 22 2008

ASJC Scopus subject areas

  • General


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