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Tung TT, Jakobsen TH, Dao TT, Fuglsang AT, Givskov M, Christensen SB, Nielsen J. Fusaric acid and analogues as Gram-negative bacterial quorum sensing inhibitors. Eur J Med Chem 2016; 126:1011-1020. [PMID: 28033578 DOI: 10.1016/j.ejmech.2016.11.044] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 10/27/2016] [Accepted: 11/21/2016] [Indexed: 12/31/2022]
Abstract
Taking advantage of microwave-assisted synthesis, efficient and expedite procedures for preparation of a library of fusaric acid and 39 analogues are reported. The fusaric acid analogues were tested in cell-based screening assays for inhibition of the las and rhl quorum sensing system in Pseudomonas aeruginosa and the lux quorum sensing system in Vibrio fischeri. Eight of the 40 compounds in the library including fusaric acid inhibited lux quorum sensing and one compound inhibited activity of the las quorum sensing system. To our delight, none of the compounds showed growth inhibitory effects in the tested concentration ranges.
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Affiliation(s)
- Truong Thanh Tung
- Department of Drug Design and Pharmacology, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Denmark
| | - Tim Holm Jakobsen
- Costerton Biofilm Center, Faculty of Health Sciences, Department of Immunology and Microbiology, Blegdamsvej 3B, 2200 Copenhagen, Denmark
| | - Trong Tuan Dao
- Department of Drug Design and Pharmacology, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Denmark; Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Anja Thoe Fuglsang
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Michael Givskov
- Costerton Biofilm Center, Faculty of Health Sciences, Department of Immunology and Microbiology, Blegdamsvej 3B, 2200 Copenhagen, Denmark; Singapore Centre for Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, 637551, Singapore
| | - Søren Brøgger Christensen
- Department of Drug Design and Pharmacology, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Denmark.
| | - John Nielsen
- Department of Drug Design and Pharmacology, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Denmark.
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