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Effect of age on pro-inflammatory miRNAs contained in mesenchymal stem cell-derived extracellular vesicles

AutorFafián-Labora, J.; Lesende-Rodríguez, I.; Fernández-Pernas, P.; Sangiao-Alvarellos, S.; Monserrat, L.; Arntz, O. J.; Van de Loo, F. J.; Mateos, Jesús; Arufe, M. C.
Fecha de publicación2017
EditorNature Publishing Group
CitaciónScientific Reports 7: 43923 (2017)
ResumenStem cells possess significant age-dependent differences in their immune-response profile. These differences were analysed by Next-Generation Sequencing of six age groups from bone marrow mesenchymal stem cells. A total of 9,628 genes presenting differential expression between age groups were grouped into metabolic pathways. We focused our research on young, pre-pubertal and adult groups, which presented the highest amount of differentially expressed genes related to inflammation mediated by chemokine and cytokine signalling pathways compared with the newborn group, which was used as a control. Extracellular vesicles extracted from each group were characterized by nanoparticle tracking and flow cytometry analysis, and several micro-RNAs were verified by quantitative real-time polymerase chain reaction because of their relationship with the pathway of interest. Since miR-21-5p showed the highest statistically significant expression in extracellular vesicles from mesenchymal stem cells of the pre-pubertal group, we conducted a functional experiment inhibiting its expression and investigating the modulation of Toll-Like Receptor 4 and their link to damage-associated molecular patterns. Together, these results indicate for the first time that mesenchymal stem cell-derived extracellular vesicles have significant age-dependent differences in their immune profiles
Descripción11 páginas, 6 figuras, 1 tabla.-- This work is licensed under a Creative Commons Attribution 4.0 International License
Versión del editorhttp://dx.doi.org/10.1038/srep43923
URIhttp://hdl.handle.net/10261/147355
DOI10.1038/srep43923
E-ISSN2045-2322
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