RT Journal Article T1 New inhibitors of angiogenesis with antitumor activity in vivo A1 Marín Ramos, Nagore I. A1 Alonso, Dulce A1 Ortega Gutiérrez, Silvia A1 Ortega Nogales, Francisco J. A1 Balabasquer, Moisés A1 Vázquez Villa, María Del Henar A1 Andradas, Clara A1 Blasco Benito, Sandra A1 Pérez Gómez, Eduardo A1 Canales Mayordomo, María Ángeles A1 Jiménez Barbero, Jesus A1 Marquina, Ana A1 Moscoso del Prado, Jaime A1 Sánchez García, María Cristina A1 Martín-Fontecha Corrales, María Del Mar A1 López Rodríguez, María Luz AB Angiogenesis is a requirement for the sustained growth and proliferation of solid tumors, and the development of new compounds that induce a sustained inhibition of the proangiogenic signaling generated by tumor hypoxia still remains as an important unmet need. In this work, we describe a new antiangiogenic compound (22) that inhibits proangiogenic signaling under hypoxic conditions in breast cancer cells. Compound 22 blocks the MAPK pathway, impairs cellular migration under hypoxic conditions, and regulates a set of genes related to angiogenesis. These responses are mediated by HIF-1α, since the effects of compound 22 mostly disappear when its expression is knocked-down. Furthermore, administration of compound 22 in a xenograft model of breast cancer produced tumor growth reductions ranging from 46 to 55% in 38% of the treated animals without causing any toxic side effects. Importantly, in the responding tumors, a significant reduction in the number of blood vessels was observed, further supporting the mechanism of action of the compound. These findings provide a rationale for the development of new antiangiogenic compounds that could eventually lead to new drugs suitable for the treatment of some types of tumors either alone or in combination with other agents. PB ACS Publications SN 0022-2623 YR 2015 FD 2015-05-14 LK https://hdl.handle.net/20.500.14352/114166 UL https://hdl.handle.net/20.500.14352/114166 LA eng NO Marín-Ramos, N. I., Alonso, D., Ortega-Gutiérrez, S., Ortega-Nogales, F. J., Balabasquer, M., Vázquez-Villa, H., Andradas, C., Blasco-Benito, S., Pérez-Gómez, E., Canales, A., Jiménez-Barbero, J., Marquina, A., Moscoso del Prado, J., Sánchez, C., Martín-Fontecha, M., López-Rodríguez, M. L. New Inhibitors of Angiogenesis with Antitumor Activity in Vivo. J. Med. Chem. 2015, 58 (9), 3757-3766 NO Ministerio de Economı́a y Competitividad NO Instituto de Salud Carlos III NO Comunidad de Madrid NO Asociación Española Contra el Cáncer NO Campus de Excelencia CEI Moncloa DS Docta Complutense RD 13 abr 2025