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Application of Time-Resolved Fluorescence Microscopy for Enhancing the Selectivity of Fluorogenic Dyes of the Arylidene–Imidazolone Series toward the Endoplasmic Reticulum.
- Source :
-
Russian Journal of Bioorganic Chemistry . Oct2024, Vol. 50 Issue 5, p1896-1903. 8p. - Publication Year :
- 2024
-
Abstract
- Objective: A number of previously synthesized fluorogenic arylidene-imidazolones, which predominantly stain the endoplasmic reticulum (ER) of living cells, were studied by time-resolved fluorescence microscopy. It was suggested that the use of fluorescence microscopy of this type can enhance the selectivity of ER staining. Methods: The lifetimes of arylidene-imidazolone compounds in set of solvents with different polarity were measured with time-correlated single photon counting spectroscopy. Live HeLa Kyoto cells were stained with studied dyes and analyzed with time-resolved fluorescence microscopy. Results and discussion: It was found that most of the studied compounds show bi- or triexponential fluorescence decay patterns in solutions. In live cell culture dye (I) showed a monoexponential decay pattern, while dyes (II–IV) were better fitted by a biexponential function. Dyes (I), (III), and (IV) stained both ER and adiposomes, while dye (II) stained only ER. Conclusions: It is shown that under FLIM conditions discriminative filtering of cellular organelles stained with studied fluorogenic dyes is possible and applicable if the difference of mean amplitude-weighted lifetime is more than 0.1 ns, thus increasing the selectivity of ER staining in live cells. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10681620
- Volume :
- 50
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Russian Journal of Bioorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 180168045
- Full Text :
- https://doi.org/10.1134/S1068162024050315