RT Journal Article T1 Development of fluorescent ligands for the human 5-HT1A receptor A1 Alonso, Dulce A1 Vázquez Villa, María Del Henar A1 Gamo, Ana M. A1 Martínez Esperón, Maria F. A1 Tortosa, Mariola A1 Viso, Alma A1 Fernández de la Pradilla, Roberto A1 Junquera González, María Elena A1 Aicart Sospedra, Emilio A1 Martín-Fontecha Corrales, María Del Mar A1 Benhamú Salama, Bellinda A1 López Rodríguez, María Luz A1 Ortega Gutiérrez, Silvia AB In this work, we report the design and synthesis of a set of fluorescent probes targeting the human 5-HT1A receptor (h5-HT1AR). Among the synthesized compounds, derivative 4 deserves special attention as being a high-affinity ligand (Ki = 2 nM) with good fluorescent properties (Iem > 1000 au and a fluorescence quantum yield, Φf, of 0.26), which enables direct observation of the h5-HT1AR in cells. Thus, it represents the first efficacious fluorescent probe for the specific labeling of h5-HT1AR in cells. Our results provide the basis for the introduction of a variety of tags in scaffolds of G protein-coupled receptor (GPCR) ligands that enable visualization, covalent binding, or affinity pull-down of receptors. These strategies should contribute to the optimization of the therapeutic exploitation of known or new members of the GPCR superfamily by providing valuable information about their location or level of expression. PB ACS Publications SN 1948-5875 YR 2010 FD 2010-09-01 LK https://hdl.handle.net/20.500.14352/114435 UL https://hdl.handle.net/20.500.14352/114435 LA eng NO Alonso, D., Vázquez-Villa, H., Gamo, A. M., Martínez-Esperón, M. F., Tortosa, M., Viso, A., de la Pradilla, R.F., Junquera, E., Aicart, E. ; Martín-Fontecha, M., Benhamú, B., López-Rodríguez, M. L., Ortega-Gutiérrez, S. Development of Fluorescent Ligands for the Human 5-HT1A Receptor. ACS Med. Chem. Lett. 2010, 1 (6), 249-253 NO Ministerio de Ciencia, Innovación y Universidades NO Comunidad de Madrid DS Docta Complutense RD 11 abr 2025