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Updated: Jul 10, 2026
03:29
Synthesis and Assay of Vibrio Quorum Sensing Inhibitors
Published on: May 31, 2024
Quorum sensing antagonism from marine organisms
Mette Elena Skindersoe1, Piers Ettinger-Epstein, Thomas Bovbjerg Rasmussen
1Department of BioScience and Technology, Technical University of Denmark, Lyngby, Denmark.
Marine Biotechnology (New York, N.Y.)
|October 24, 2007
Summary
Marine sponges from the Great Barrier Reef show promise in combating drug-resistant bacteria. Extracts inhibited bacterial quorum sensing (QS), a key factor in pathogen virulence, offering new therapeutic avenues.
Area of Science:
- Marine Biology
- Microbiology
- Drug Discovery
Background:
- Multiresistant bacteria pose a growing global health threat.
- Bacterial quorum sensing (QS) regulates virulence and is a potential therapeutic target.
Purpose of the Study:
- To screen marine organism extracts for quorum sensing inhibition.
- To identify novel QS inhibitors from marine sources.
Main Methods:
- Screened 284 extracts from Great Barrier Reef marine organisms.
- Utilized a general LuxR-derived QS screen and a specific Pseudomonas aeruginosa QS screen.
- Isolated and tested secondary metabolites from active sponge extracts.
Main Results:
- 64 of 284 extracts (23%) inhibited QS in the general screen.
- 36 of these active extracts (56%) also inhibited QS in the P. aeruginosa screen.
- Extracts from Luffariella variabilis and its metabolites (manoalide, manoalide monoacetate, secomanoalide) demonstrated potent QS inhibition.
Conclusions:
- Marine organisms, particularly the sponge Luffariella variabilis, are a rich source of QS inhibitors.
- Specific compounds like manoalide show potential as novel anti-infective agents by targeting bacterial communication.
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