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- Title
The Role of Orientation of Surface Bound Dihydropyrrol-2-ones (DHP) on Biological Activity.
- Authors
Taunk, Aditi; Renxun Chen; Iskander, George; Ho, Kitty K. K.; Almohaywi, Basmah; Black, David StClair; Willcox, Mark D. P.; Kumar, Naresh
- Abstract
Quorum sensing (QS) signaling system is important for bacterial growth, adhesion, and biofilm formation resulting in numerous infectious diseases. Dihydropyrrol-2-ones (DHPs) represent a novel class of antimicrobial agents that inhibit QS, and are less prone to develop bacterial resistance due to their non-growth inhibition mechanism of action which does not cause survival pressure on bacteria. DHPs can prevent bacterial colonization and quorum sensing when covalently bound to substrates. In this study, the role of orientation of DHP compounds was investigated after covalent attachment by 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC)/N-hydroxysuccinimide (NHS) coupling reaction to amine-functionalized glass surfaces via various positions of the DHP sca old. The functionalized glass surfaces were characterized by X-ray photoelectron spectroscopy (XPS) and contact angle measurements and tested for their in vitro biological activity against S. aureus and P. aeruginosa. DHPs attached via the N-1 position resulted in the highest antibacterial activities against S. aureus, while no di erence was observed for DHPs attached either via the N-1 position or the C-4 phenyl ring against P. aeruginosa.
- Publication
Molecules, 2019, Vol 24, Issue 14, p2676
- ISSN
1420-3049
- Publication type
Article
- DOI
10.3390/molecules24142676