کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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2051144 | 1074193 | 2008 | 7 صفحه PDF | دانلود رایگان |
Recent realization of ligand-directed functional selectivity demands high-resolution tools for studying receptor biology and ligand pharmacology. Here we use label-free optical biosensor to examine the dynamic mass redistribution of human epidermoid A431 cells in response to diverse β2-adrenoceptor ligands. Multi-parameter analysis reveals distinct patterns in activation and signaling of the receptor induced by different agonists. Sequential and co-stimulation assays categorize various ligands for their ability to modulate signaling induced by catechol, a structural component of catecholamines. This study documents multiple ligand-specific states of the β2-adrenoceptor and highlights the power of the biosensor assays for screening pathway-biased ligands.
Journal: FEBS Letters - Volume 582, Issue 5, 5 March 2008, Pages 558–564