Synthesis, Optical Properties, and Antiproliferative Evaluation of NBD-Triterpene Fluorescent Probes
Identificadores
URI: https://hdl.handle.net/10481/79818Metadatos
Mostrar el registro completo del ítemAutor
Rivas Sánchez, Francisco De Asís; Reyes Zurita, Fernando Jesús; Medina O'Donnell, Marta; Vega Granados, Dulce Karina; Martínez Rodríguez, Antonio; Sepúlveda Justo, María Del Rosario; Molina Bolívar, José Antonio; Álvarez de Cienfuegos, Luis; Parra Sánchez, AndrésMateria
Triterpene Fluorescent Probes Anti-cancer
Fecha
2022-12-21Referencia bibliográfica
Journal of Natural Products 2023, 86, 166−175
Patrocinador
Grupo de Investigación "Biotecnología y Química de Productos Naturales" (grupo FQM-139 del PAIDI de la Junta de Andalucía)Resumen
A fluorescent labeling protocol for hydroxylated natural compounds with promising antitumor properties has been used to synthesize 12 derivatives having fluorescent properties and biological activity. The reagent used for the synthesis of these fluorescent derivatives was 7-nitrobenzo-2-oxa-1,3-diazole chloride (NBD-Cl). The linkers employed to bind the NBD-Cl reagent to the natural compounds were ω-amino acids of different chain lengths. The natural triterpene compounds chosen were oleanolic and maslinic acid, as their corresponding 28-benzylated derivatives. Thus, triterpene conjugates with NBD have been studied for their optical fluorescence properties and their biological activities against cell proliferation in three cancer cell lines (B16-F10, HT-29, and HepG2), compared with three nontumor cell lines (HPF, IEC-18, and WRL68) from different tissues. The results of the fluorescence study have shown that the best fluorescent labels are those in which the ω-amino acid chain is shorter, and the carboxylic group is not benzylated. Analysis by confocal microscopy showed that these compounds were rapidly incorporated into cells in all three cancer cell lines, with these same derivatives showing the highest toxicity against the cancer cell lines tested. Then, the fluorescent labeling of these triterpene conjugates with NBD enabled their uptake and subcellular distribution to be followed to probe in detail their biological properties at the cellular and molecular level.