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Abstract
For understanding cholesterol and phospholipid efflux pathways there is a need for cellular fluorescence-based high-content screens (HCS) to investigated the cholesterol and phospholipid content in human macrophages. Making use of fluorescence imaging based on HCS we have developed a tool to evaluate new agents that can act as inducers of cholesterol efflux. The fluorescence assay is based on the different staining patterns of cholesterol-loaded (E-LDL) and deloaded (HDL3) differentiated monocytes by the saturated, fluorescent lipid probe (1,2-dimyristoyl-sn-glycero-3-phospho-ethanolamine)-tetramethyl-rhodamin. Morphologic examination and statistical evaluation of the staining pattern such as gray value, threshold area, shape factor and the spot size distribution provides evidence for a significant pattern change when cholesterol enriched and cholesterol depleted differentiated monocytes were imaged.
Published Version
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