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High-throughput fluorescence polarization method for identifying ligands of LOX-1

   
@article{APS4049,
	author = {Tian-tai Zhang and Zhen-tai Huang and Ying Dai and Xiu-ping Chen and Ping Zhu and Guanhua Du},
	title = {High-throughput fluorescence polarization method for identifying ligands of LOX-1},
	journal = {Acta Pharmacologica Sinica},
	volume = {27},
	number = {4},
	year = {2016},
	keywords = {},
	abstract = {Aim:  To develop and optimize a competitive fluorescence polarization (FP) method, and use it as a high-throughput screening (HTS) assay for drug discovery. Methods:  Human lectin-like oxidized low-density lipoprotein receptor-1 (hLOX-1) and oxidized low-density lipoprotein (oxLDL) were used to establish a highthroughput fluorescence polarization assay to screen ligands of human LOX-1. A 96-well plate assay was performed with a fast plate reader. Three fluorescein isothiocyanate-labeled hLOX-1 concentrations (100, 200, and 400 nmol/L) were selected to be titrated by oxLDL (from 0.05 nmol/L to 100 μmol/L) in order to obtain optimal reactive concentrations. The concentration of Me2SO used (0%, 1%, 3%, 5%) and incubation time (15 min, 30 min, 1 h, 2 h) were optimized. The Z' factor was calculated to estimate the quality of FP-based HTS. Results:  Concentrations of 200 nmol/L for human LOX-1 and 50 mol/L for oxLDL were used in the actual assay. Concentrations of 0% to 5% Me2SO and different reaction times did not affect the FP-based HTS. The Z' value was 0.66. By using this detection and screening system, 12 700 compounds were screened and 3 ligands with an IC50 of less than 4.5 μmol/L were found.  Conclusion:  The established competitive FPbased assay is sensitive, stable, highly reproducible and robust, and suitable for HTS for ligands of the hLOX-1 receptor.},
	issn = {1745-7254},	url = {http://www.chinaphar.com/article/view/4049}
}