RT Journal Article T1 Funcionalizacion of Morin-Loaded PLGA Nanoparticles with Phenylalanine Dipeptide Targeting the Brain A1 Alonso, Mario A1 Barcia Hernández, Emilia María A1 González Matilla, Juan Francisco A1 Montejo, Consuelo A1 García García, Luis A1 Villa-Hermosilla, Mónica Carolina A1 Negro Álvarez, María Sofía Elisa A1 Fraguas Sánchez, Ana Isabel A1 Fernández Carballido, Ana María AB Alzheimer’s disease (AD) is the most prevalent neurodegenerative disorder, with its in cidence constantly increasing. To date, there is no cure for the disease, with a need for new and effective treatments. Morin hydrate (MH) is a naturally occurring flavonoid of the Moraceae family with antioxidant and anti-inflammatory properties; however, the blood–brain barrier (BBB) prevents this flavonoid from reaching the CNS when aiming to potentially treat AD. Seeking to use the LAT-1transporter present in the BBB, a nanoparticle (NPs) formulation loaded with MH and functional ized with phenylalanine-phenylalanine dipeptide was developed (NPphe-MH) and compared to non-functionalized NPs (NP-MH). In addition, two formulations were prepared using rhodamine B (Rh-B) as a fluorescent dye (NPphe-Rh and NP-Rh) to study their biodistribution and ability to cross the BBB. Functionalization of PLGA NPs resulted in high encapsulation efficiencies for both MH and Rh-B. Studies conducted in Wistar rats showed that the presence of phenylalanine dipeptide in the NPs modified their biodistribution profiles, making them more attractive for both liver and lungs, whereas non-functionalized NPs were predominantly distributed to the spleen. Formulation NPphe-Rh remained in the brain for at least 2 h after administration. PB MPDI SN 1999-4923 YR 2022 FD 2022-10-31 LK https://hdl.handle.net/20.500.14352/92431 UL https://hdl.handle.net/20.500.14352/92431 LA eng NO Alonso, M.; Barcia, E.; González, J.-F.; Montejo, C.; García-García, L.; Villa-Hermosilla, M.-C.; Negro, S.; Fraguas-Sánchez, A.-I.; Fernández-Carballido, A. Functionalization of Morin-Loaded PLGA Nanoparticles with Phenylalanine Dipeptide Targeting the Brain. Pharmaceutics 2022, 14, 2348. https://doi.org/10.3390/pharmaceutics14112348 NO Complutense University of Madrid research group. “Formulation and Bioavailability of New Drugs” DS Docta Complutense RD 7 abr 2025