Infection Control by Antibody Disruption of Bacterial Quorum Sensing Signaling

Junguk Park, Reshma Jagasia, Gunnar F. Kaufmann, John C. Mathison, Diana I. Ruiz, Jason A. Moss, Michael M. Meijler, Richard J. Ulevitch, Kim D. Janda

Research output: Contribution to journalArticlepeer-review

208 Scopus citations

Abstract

Quorum sensing (QS) is the process through which bacteria communicate utilizing small diffusible molecules termed autoinducers. It has been demonstrated that QS controls a plethora of microbial processes including the expression of virulence factors. Here we report an immunopharmacotherapeutic approach for the attenuation of QS in the Gram-positive human pathogen Staphylococcus aureus. An anti-autoinducer monoclonal antibody, AP4-24H11, was elicited against a rationally designed hapten, and efficiently inhibited QS in vitro through the sequestration of the autoinducing peptide (AIP)-4 produced by S. aureus RN4850. Importantly, AP4-24H11 suppressed S. aureus pathogenicity in an abscess formation mouse model in vivo and provided complete protection against a lethal S. aureus challenge. These findings provide a strong foundation for further investigations of immunopharmacotherapy for the treatment of bacterial infections in which QS controls the expression of virulence factors.

Original languageEnglish
Pages (from-to)1119-1127
Number of pages9
JournalChemistry and Biology
Volume14
Issue number10
DOIs
StatePublished - 26 Oct 2007
Externally publishedYes

Keywords

  • CHEMBIO
  • MICROBIO

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Medicine
  • Molecular Biology
  • Pharmacology
  • Drug Discovery
  • Clinical Biochemistry

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