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Spring House, PA, United States

Clemente J.C.,Glaxosmithkline | Clemente J.C.,Janssen Research Asnd Development LLC | Nulton E.,Janssen Research Asnd Development LLC | Nelen M.,Janssen Research Asnd Development LLC | And 8 more authors.
Journal of Biomolecular Screening | Year: 2012

Endocannabinoids such as 2-arachidonylglycerol (2-AG) are ligands for cannabinoid receptors that contribute to the transmission and modulation of pain signals. The antinociceptive effect of exogenous 2-AG suggests that inhibition of monoglyceride lipase (MGLL), the enzyme responsible for degrading 2-AG and arresting signaling, may be a target for pain modulation. Here we describe the characterization of MGLL ligands following a high-throughput screening campaign. Ligands were discovered using ThermoFluor, a label-free affinity-based screening tool that measures ligand binding via modulation of protein thermal stability. A kinetic fluorescent assay using the substrate 4-methylcoumarin butyrate was used to counterscreen confirmed HTS positives. A comparison of results from binding and inhibition assays allowed elucidation of compound mechanism of action. We demonstrate the limit of each technology and the benefits of using orthogonal assay techniques in profiling compounds. © 2012 Society for Laboratory Automation and Screening. Source

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