RT Journal Article T1 Fluorescent Calixarene-Schiff as a Nanovehicle with Biomedical Purposes A1 Antonio Lebron, Jose A1 Lopez-Lopez, Manuel A1 Luisa Moya, Maria A1 Deasy, Mary A1 Munoz-Wic, Ana A1 Beatriz Garcia-Calderon, Clara A1 Valle Rosado, Ivan A1 Lopez-Cornejo, Pilar A1 Bernal, Eva A1 Jose Ostos, Francisco K1 calixarenes K1 ct-DNA K1 denaturation K1 compaction K1 gene therapy K1 nanocarriers K1 Dna-binding K1 Condensation K1 Delivery K1 Surface K1 Nanoparticles K1 Transfection K1 Langmuir K1 Ions AB Gene therapy is a technique that is currently under expansion and development. Recent advances in genetic medicine have paved the way for a broader range of therapies and laid the groundwork for next-generation technologies. A terminally substituted difluorene-diester Schiff Base calix[4]arene has been studied in this work as possible nanovector to be used in gene therapy. Changes to luminescent behavior of the calixarene macrocycle are reported in the presence of ct-DNA. The calixarene macrocycle interacts with calf thymus DNA (ct-DNA), generating changes in its conformation. Partial double-strand denaturation is induced at low concentrations of the calixarene, resulting in compaction of the ct-DNA. However, interaction between calixarene molecules themselves takes place at high calixarene concentrations, favoring the decompaction of the polynucleotide. Based on cytotoxicity studies, the calixarene macrocycle investigated has the potential to be used as a nanovehicle and improve the therapeutic efficacy of pharmacological agents against tumors. PB Mdpi YR 2022 FD 2022-07-01 LK http://hdl.handle.net/10668/20940 UL http://hdl.handle.net/10668/20940 LA en DS RISalud RD Apr 8, 2025