Screening for GPCR Ligands Using Surface Plasmon Resonance.
Screening for GPCR Ligands Using Surface Plasmon Resonance.
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DOI:
10.1021/ml2000017
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发表时间:
2011-07-14
影响因子:
4.2
通讯作者:
Hopkins, Andrew L.
中科院分区:
文献类型:
--
作者:
Navratilova, Iva;Besnard, Jeremy;Hopkins, Andrew L.
G-protein coupled receptors (GPCRs) are a class of drug targets of primary importance. However, receptor assays are based on measurement of either ligand displacement or downstream functional responses, rather than direct observation of ligand binding. Issues of allosteric modulation, probe dependence, and functional selectivity create challenges in selecting suitable assays formats. Therefore, a method that directly measures GPCR–ligand interactions, independent of binding site, probe, and signaling pathway would be a useful primary and orthogonal screening method. We have developed a GPCR biosensor assay protocol that offers the opportunity for high-throughput label-free screening that directly measures GPCR–ligand interactions. The biosensor-based direct screening method identifies the interaction of both orthosteric and allosteric ligands with solubilized, native GPCRs, in a label-free and cell-free environment, thus overcoming the limitations of indirect and displacement assay methods. We exemplify the method by the discovery of novel ligands for the chemokine receptor, CCR5, that are ligand efficient fragments.
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