Abstract
We have presented rhodamine-derived Schiff base probes (1-6) selective of the Fe3+ ion in biological systems. In the presence of Fe3+ ions, the probes display new absorption and emission bands at 526 nm and 551 nm, respectively. Confocal microscopic analysis using the HepG2 cell line showed that probes 1-6 provide fluorescence Off-On changes caused by cellular Fe3+ ions, and demonstrated a largely enhanced fluorescence upon iron overloading of the cells. We also found that the Fe3+ ion-mediated fluorescence changes of probes 1-6 are mainly localized in the ER (Endoplasmic Reticulum) in HepG2 cells. Among them, probe 5 exhibits the highest selectivity for ER localization over the other organelles.
Original language | English |
---|---|
Pages (from-to) | 245-250 |
Number of pages | 6 |
Journal | Dyes and Pigments |
Volume | 130 |
DOIs | |
Publication status | Published - 2016 Jul |
Keywords
- Cell imaging
- Fluorescent probe
- Iron detection
- Rhodamine
ASJC Scopus subject areas
- Chemical Engineering(all)
- Process Chemistry and Technology