Gutiérrez Lovera, CarlhaMartinez-Val, JeannetteLores Touriño, SainzaLópez Bouzo, BelénDíez Villares, SandraSandra, Alijas PérezPensado López, AlbaVázquez Ríos, Abi JuditSánchez Piñón, LauraFuente Freire, María de laSaraiva, Sofía M.2024-01-252024-01-252021Saraiva, S.M., Gutiérrez-Lovera, C., Martínez-Val, J. et al. Edelfosine nanoemulsions inhibit tumor growth of triple negative breast cancer in zebrafish xenograft model. Sci Rep 11, 9873 (2021)2045-2322http://hdl.handle.net/10347/31994Triple negative breast cancer (TNBC) is known for being very aggressive, heterogeneous and highly metastatic. The standard of care treatment is still chemotherapy, with adjacent toxicity and low efficacy, highlighting the need for alternative and more effective therapeutic strategies. Edelfosine, an alkyl-lysophospholipid, has proved to be a promising therapy for several cancer types, upon delivery in lipid nanoparticles. Therefore, the objective of this work was to explore the potential of edelfosine for the treatment of TNBC. Edelfosine nanoemulsions (ET-NEs) composed by edelfosine, Miglyol 812 and phosphatidylcholine as excipients, due to their good safety profile, presented an average size of about 120 nm and a neutral zeta potential, and were stable in biorelevant media. The ability of ET-NEs to interrupt tumor growth in TNBC was demonstrated both in vitro, using a highly aggressive and invasive TNBC cell line, and in vivo, using zebrafish embryos. Importantly, ET-NEs were able to penetrate through the skin barrier of MDA-MB 231 xenografted zebrafish embryos, into the yolk sac, leading to an effective decrease of highly aggressive and invasive tumoral cells’ proliferation. Altogether the results demonstrate the potential of ET-NEs for the development of new therapeutic approaches for TNBCengOpen Access. This article is licensed under a Creative Commons Attribution 4.0 International Creativehttp://creativecommons.org/licenses/by/4.0/CancerDrug discoveryNanoscience and technologyjournal article10.1038/s41598-021-87968-4open access