| Assay Method Information | |
| | Luminescence Microorganism Dose Retest to Identify Inhibitors of the AI-2 Quorum Sensing System |
| Description: | Keywords: Quorum Sensing, Auto-inducer 2 (AI-2), Vibrio harveyi, LuxS,LuxPQ,LuxO,LuxU,LuxR,luciferase,Luminescence Assay Overview: A modified strain of Vibrio harveyi with constitutive on quorum sensing system will be exposed to small molecules identified from the HTS screen used to identify LuxS inhibitors and LuxPQ antagonists. Growth of the organism post exposure will be followed using optical density and disruption of down stream quorum sensing elements will be observed based on decreased luminescent signal. Expected Outcome: Identification of AI-2 quorum sensing system inhibitors with modes of action which either antagonize the LuxPQ receptor or inhibit LuxS synthase. Such inhibitors should not perturb growth (observed by optical density) nor the constitutive on quorum sensing (observed by luminescence). |
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