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Fluorenyl-Loaded Quatsome Nanostructured Fluorescent Probes

AutorXinglei, Liu; Ardizzone, Antonio ; Binglin, Sui; Anzola, Mattia; Ventosa, Nora ; Taihong, Liu; Veciana, Jaume ; Belfield, Kevin D.
Palabras claveAnisotropy
Cell and Molecular biology
Drug delivery systems
Electric transport processes and properties
Fluorescence imaging
Fluorescence microscopy
Imaging agents
Luminescence spectroscopy
Optical materials
Quantum transition
Fecha de publicación2-ago-2017
EditorAmerican Chemical Society
CitaciónACS Omega 2(8): 4112-4122 (2017)
ResumenDelivery of hydrophobic materials in biological systems, for example, contrast agents or drugs, is an obdurate challenge, severely restricting the use of materials with otherwise advantageous properties. The synthesis and characterization of a highly stable and water-soluble nanovesicle, referred to as a quatsome (QS, vesicle prepared from cholesterol and amphiphilic quaternary amines), that allowed the nanostructuration of a nonwater soluble fluorene-based probe are reported. Photophysical properties of fluorenyl–quatsome nanovesicles were investigated via ultraviolet–visible absorption and fluorescence spectroscopy in various solvents. Colloidal stability and morphology of the nanostructured fluorescent probes were studied via cryogenic transmission electronic microscopy, revealing a “patchy” quatsome vascular morphology. As an example of the utility of these fluorescent nanoprobes, examination of cellular distribution was evaluated in HCT 116 (an epithelial colorectal carcinoma cell line) and COS-7 (an African green monkey kidney cell line) cell lines, demonstrating the selective localization of C-QS and M-QS vesicles in lysosomes with high Pearson’s colocalization coefficient, where C-QS and M-QS refer to quatsomes prepared with hexadecyltrimethylammonium bromide or tetradecyldimethylbenzylammonium chloride, respectively. Further experiments demonstrated their use in time-dependent lysosomal tracking.
Versión del editorhttp://dx.doi.org/10.1021/acsomega.7b00779
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