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 language | English |
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Pages (from-to) | 1119-1127 |
Number of pages | 9 |
Journal | Chemistry and Biology |
Volume | 14 |
Issue number | 10 |
DOIs | |
State | Published - 26 Oct 2007 |
Externally published | Yes |
Keywords
- CHEMBIO
- MICROBIO
ASJC Scopus subject areas
- Biochemistry
- Molecular Medicine
- Molecular Biology
- Pharmacology
- Drug Discovery
- Clinical Biochemistry