“…Here we demonstrate an alternative label-free and high-throughput approach for screening of OR binding by drug candidates using high-throughput chromatography-free mass spectrometry (MS), an approach that is increasingly utilized for drug discovery applications. 9–11 Our particular system combines custom and commercial software, robotics, and analytical instrumentation, to allow automated assays and data handling. 12 The core technology of the platform is desorption electrospray ionization (DESI), an ambient ionization method that provides rapid and direct MS analysis of complex samples in the open air.…”