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Specific Maltose Derivatives Modulate the Swarming Motility of Nonswarming Mutant and Inhibit Bacterial Adhesion and Biofilm Formation by Pseudomonas aeruginosa
Author(s) -
Shetye Gauri S.,
Singh Nischal,
Jia Changqing,
Nguyen Chan D. K.,
Wang Guirong,
Luk YanYeung
Publication year - 2014
Publication title -
chembiochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.05
H-Index - 126
eISSN - 1439-7633
pISSN - 1439-4227
DOI - 10.1002/cbic.201402093
Subject(s) - swarming motility , biofilm , swarming (honey bee) , pseudomonas aeruginosa , chemistry , mutant , motility , maltose , disaccharide , microbiology and biotechnology , rhamnolipid , biochemistry , bacteria , quorum sensing , biology , enzyme , gene , genetics
We have demonstrated that specific synthetic maltose derivatives activate the swarming motility of a Pseudomonas aeruginosa nonswarming mutant (rhlA) at low concentration, but inhibit it at high concentration. Although these molecules are not microbicidal, active maltose derivatives with bulky hydrocarbon groups inhibited bacterial adhesion, and exhibited biofilm inhibition and dispersion (IC 50 ∼20 μ M and DC 50 ∼30 μ M , respectively). Because the swarming motility of the rhlA mutant is abolished by the lack natural rhamnolipids, the swarming activation suggests that maltose derivatives are analogues of rhamnolipids. Together, these results suggest a new approach of controlling multiple bacterial activities (bacterial adhesion, biofilm formation, and swarming motility) by a set of disaccharide‐based molecules.