期刊
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
卷 19, 期 3, 页码 362-370出版社
SPRINGERNATURE
DOI: 10.1039/c9pp00465c
关键词
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资金
- MIUR
- University of Perugia
- Mazzucato family
The capability of three quaternized styryl-azinium iodides to bind cellular RNA has been tested by means of Fluorescence Confocal Microscopy imaging of stained MCF-7 cells treated with RNase. Their association constants have been estimated through spectrophotometric and fluorimetric titrations with tRNA and compared to their affinity toward DNA. Transient absorption spectroscopy with femtosecond resolution confirmed the binding of the investigated compounds with tRNA and shed new light on the excited state dynamics of their complexes, by revealing a significant lengthening of the lifetime of S-1 upon complexation, which parallels the fluorescence quantum yield enhancement.
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