Responsive fluorophore aggregation provides spectral contrast for fluorescence lifetime imaging

Autor: John K. Grey, Chao Cui, Xiaowei Ma, Brandon Burnside, Kelton A. Schleyer, Benjamin D. Datko, Lina Cui
Jazyk: angličtina
Rok vydání: 2020
Předmět:
DOI: 10.1101/2020.01.28.923672
Popis: Fluorophores experience altered emission lifetimes when incorporated into and liberated from macromolecules or molecular aggregates; this trend suggests the potential for a fluorescent, responsive probe capable of undergoing self-assembly and aggregation and consequently altering the lifetime of its fluorescent moiety to provide contrast between the active and inactive probes. We developed a cyanobenzothioazole-fluorescein conjugate (1), and spectroscopically examined the lifetime changes caused by its reduction-induced aggregationin vitro. A decrease in lifetime was observed for compound1in a buffered system activated using the biological reducing agent glutathione, suggesting a possible approach for designing responsive self-aggregating lifetime imaging probes.
Databáze: OpenAIRE