title: Inhibition of Pseudomonas aeruginosa quorum sensing by AI-2 analogs.
abstract: Autoinducer-2 (AI-2) has been suggested to serve as a universal interspecies quorum sensing signaling molecule. We have synthesized a set of AI-2 analogs with small incremental changes in alkyl substitution on C-2 and evaluated them for their agonistic and antagonistic potential as quorum sensing (QS) attenuators in two different bacterial species: Pseudomonas aeruginosa and Vibrio harveyi. Unexpectedly, several of the analogs were found to function as synergistic QS agonists in V. harveyi, while two of these analogs inhibit QS in P. aeruginosa.
authors.affiliation: Department of Chemistry, Ben-Gurion University of the Negev, Be'er-Sheva 84105, Israel.
authors.forename: Hadas
authors.initials: H
authors.lastname: Ganin
authors.forename: Xu
authors.initials: X
authors.lastname: Tang
authors.forename: Michael M
authors.initials: MM
authors.lastname: Meijler
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D006714:Homoserine / Q000031:analogs & derivatives* / Q000737:chemistry; D007783:Lactones / Q000737:chemistry*; D010422:Pentanones / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D011550:Pseudomonas aeruginosa / Q000187:drug effects* / Q000378:metabolism; D053038:Quorum Sensing / Q000187:drug effects* / Q000502:physiology; D014733:Vibrio / Q000378:metabolism
chemical_list: D000900:Anti-Bacterial Agents; D007783:Lactones; C091088:N-octanoylhomoserine lactone; D010422:Pentanones; D006714:Homoserine