RT info:eu-repo/semantics/article T1 Influence of core extension and side chain nature in targeting G-quadruplex structures with perylene monoimide derivatives A1 Busto Vázquez, Natalia A1 García Calvo, José A1 Cuevas Vicario, José Vicente A1 Herrera, Antonio A1 Mergny, Jean-Louis A1 Pons, Sebastian A1 Torroba Pérez, Tomás A1 García Ruiz, Begoña K1 G-quadruplexes K1 Antiproliferative K1 Perylenemonoimide K1 DNA binding K1 Química física K1 Chemistry, Physical and theoretical K1 Química orgánica K1 Chemistry, Organic K1 Química inorgánica K1 Chemistry, Inorganic AB A structure–activity relationship (SAR) study in terms of G-quadruplex binding ability and antiproliferative activity of six fluorescent perylenemonoimide (PMIs) derivatives is reported. A positive charge seems to be the key to target G4. This study also reveals the importance of the element substitution in the potential biological activity of PMIs, being the polyethylene glycol (PEG) chains in the peri position responsible for their antiproliferative activity. Among them, the cationic PMI6 with two PEG chains is the most promising compound since its fluorescence is enhanced in the presence of G-quadruplex structures. Moreover, PMI6 binds to the human telomeric G-quadruplex hTelo with high affinity and displays a high antiproliferative potential towards HeLa (cervical adenocarcinoma), A549 (lung adenocarcinoma) and A2780 (ovarian adenocarcinoma) cells. Its fate can be followed inside cells thanks to its fluorescent properties: the compound is found to accumulate in the mitochondria. PB Elsevier SN 0045-2068 YR 2021 FD 2021-03 LK http://hdl.handle.net/10259/5677 UL http://hdl.handle.net/10259/5677 LA eng NO “la Caixa” Foundation (LCF/PR/PR12/11070003), Ministerio de Ciencia, Innovación y Universidades-FEDER (RTI2018-102040-B-100), Junta de Castilla y León-FEDER (BU305P18 and BU263P18) is gratefully acknowledged. N.B. is grateful to Aurore Guédin of the ARNA Laboratory for technical support and also to the financial support of the José Castillejo Program by the Spanish Ministry of Education, Culture and Sports (JC2015-00403). A.H. was funded by a Juan de la Cierva fellowship (FJCI-2015-26175) from the Ministerio de Economía y Competitividad. This research has made use of the high-performance computing resources of the Castilla y León Supercomputing Center (SCAYLE, https://www.scayle.es), financed by FEDER (Fondo Europeo de Desarrollo Regional). Networking support of NECTAR COST Action CA18202 is fully acknowledged. This work was supported by the SYMBIT project (reg. no. CZ.02.1.01/0.0/0.0/15_003/0000477) financed by the ERDF. DS Repositorio Institucional de la Universidad de Burgos RD 04-dic-2024