A ratiometric and colorimetric cyanine-based palladium sensor with an excellent selectivity and sensitivity has been designed. Notably, the modulation of π-conjugated electrons in cyanine dyes can result in a ratiometric fluorescence change with a large Stokes shift (270 nm), especially for realizing palladium detection in aqueous samples using indicator paper and in living cells by ratiometric mode. The limit of detection is as low as 0.3 ppb.
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Molecular expression and functional activity of vitamin C specific transport system (SVCT2) in human breast cancer cells.
Int J Pharm
October 2014
Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City, 2464 Charlotte Street, Kansas City, MO 64108-2718, USA. Electronic address:
The main goal of this study is to investigate the expression of sodium dependent vitamin C transport system (SVCT2). Moreover, this investigation has been carried out to define uptake mechanism and intracellular regulation of ascorbic acid (AA) in human breast cancer cells (MDA-MB231, T47D and ZR-75-1). Uptake of [(14)C] AA was studied in MDA-MB231, T47D and ZR-75-1 cells.
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