BIOPHYSICAL CHEMISTRY, cilt.290, ss.1-12, 2022 (SCI-Expanded)
A novel chalcone derivative (4-(5-(pyridin-2-yl)-4,5-dihydro-1H-pyrazol-3-yl) phenol (PDP) was synthesized,
characterized and investigated for its potential as a fluorescent probe. The structure of the synthesized molecule
was determined by FTIR, 1H NMR, 13C NMR and LC-MS/MS. The interactions of PDP with fluorescent dyes in
aqueous SDS environment and HSA were studied by using fluorescence resonance energy transfer (FRET)
technique and steady-state and time-resolved fluorescence spectroscopy techniques. In addition, the cytotoxic
effects of PDP against various cell lines (MCF -7, HT-29, and 3 T3-L1) as well as their corresponding healthy cell
lines were tested by MTT assay and visualization of FRET efficiency of PDP in vitro was monitored by confocal
microscopy. MTT assay showed that PDP has no significant cytotoxic effect on HT-29 cancer cells and moderate
cytotoxicity on MCF -7 and 3 T3-L1 cells even at a concentration of 250 μM. Combining confocal microscopes
with the FRET technique showed that PDP significantly stained the cytoplasm of MCF -7 cell lines. These results
suggest that PDP could be used in fluorescence microscopy for cell staining.