RT Journal Article T1 MiR-219a-5p Enriched Extracellular Vesicles Induce OPC Differentiation and EAE Improvement More Efficiently Than Liposomes and Polymeric Nanoparticles A1 Osorio-Querejeta, Iñaki A1 Carregal-Romero, Susana A1 Ayerdi-Izquierdo, Ana A1 Mäger, Imre A1 Nash, Leslie A. A1 Wood, Matthew A1 Egimendia, Ander A1 Betanzos, M. A1 Alberro, Ainhoa A1 Iparraguirre, Leire A1 Moles, Laura A1 Llarena, Irantzu A1 Möller, Marco A1 Goñi-de-Cerio, Felipe A1 Bijelic, Goran A1 Ramos-Cabrer, Pedro A1 Muñoz-Culla, Maider A1 Otaegui, David AB Remyelination is a key aspect in multiple sclerosis pathology and a special effort is being made to promote it. However, there is still no available treatment to regenerate myelin and several strategies are being scrutinized. Myelination is naturally performed by oligodendrocytes and microRNAs have been postulated as a promising tool to induce oligodendrocyte precursor cell differentiation and therefore remyelination. Herein, DSPC liposomes and PLGA nanoparticles were studied for miR-219a-5p encapsulation, release and remyelination promotion. In parallel, they were compared with biologically engineered extracellular vesicles overexpressing miR-219a-5p. Interestingly, extracellular vesicles showed the highest oligodendrocyte precursor cell differentiation levels and were more effective than liposomes and polymeric nanoparticles crossing the blood–brain barrier. Finally, extracellular vesicles were able to improve EAE animal model clinical evolution. Our results indicate that the use of extracellular vesicles as miR-219a-5p delivery system can be a feasible and promising strategy to induce remyelination in multiple sclerosis patients. SN 1999-4923 YR 2020 FD 2020-02 LA eng NO Osorio-Querejeta , I , Carregal-Romero , S , Ayerdi-Izquierdo , A , Mäger , I , Nash , L A , Wood , M , Egimendia , A , Betanzos , M , Alberro , A , Iparraguirre , L , Moles , L , Llarena , I , Möller , M , Goñi-de-Cerio , F , Bijelic , G , Ramos-Cabrer , P , Muñoz-Culla , M & Otaegui , D 2020 , ' MiR-219a-5p Enriched Extracellular Vesicles Induce OPC Differentiation and EAE Improvement More Efficiently Than Liposomes and Polymeric Nanoparticles ' , Pharmaceutics , vol. 12 , no. 2 , 186 , pp. 186 . https://doi.org/10.3390/pharmaceutics12020186 NO Publisher Copyright: © 2020 by the authors. Licensee MDPI, Basel, Switzerland. DS TECNALIA Publications RD 3 jul 2024