Mechanistic differences between in vitro assays for hydrazone-based small molecule inhibitors of anthrax lethal factor
作者:M. Leslie Hanna、Theodore M. Tarasow、Julie Perkins
DOI:10.1016/j.bioorg.2006.07.004
日期:2007.2
A systematically generated series of hydrazones were analyzed as potential inhibitors of anthrax lethal factor. The hydrazones were screened using one UV-based and two fluorescence-based in vitro assays. The study identified several inhibitors with IC50 values in the micromolar range, and importantly, significant differences in the types of inhibition were observed with the different assays. (c) 2006 Elsevier Inc. All rights reserved.
Thiophene and diethylaminophenol-based “turn-on” fluorescence chemosensor for detection of Al3+ and F− in a near-perfect aqueous solution
作者:Ha Young Jeong、Seong Youl Lee、Jiyeon Han、Mi Hee Lim、Cheal Kim
DOI:10.1016/j.tet.2017.03.069
日期:2017.5
A new fluorescent sensor 1, based on thiophene and diethylaminophenol moieties, has been synthesized and its binding capabilities for metal-ion and anion recognition were investigated. The sensor I showed turn-on' fluorescence in the presence of Al3+ and F-. The sensing behaviors of 1 with Al3+ and F- were studied by using photophysical experiments, H-1 NMR titration, and ESI-mass spectrometry analysis. The detection limits for the analysis of Al3+ and F- were found to be 0.41 mu M and 1436 mu M, respectively, which are below the WHO guidelines for drinking water (7.41 mu M for Al3+ and 79 mu M for F-). Moreover, turn-on fluorescence of 1 toward Al3+ and F- caused by intramolecular charge transfer (ICT) was well explained by density functional theory (DFT) calculations. Importantly, 1 could be used to detect Al3+ in the living cells. (C) 2017 Elsevier Ltd. All rights reserved.
Mo(VI) Potential Metallodrugs: Explaining the Transport and Cytotoxicity by Chemical Transformations