2026-04-17T02:23:04Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1888822025-12-05T14:17:09Zcom_2072_1057col_2072_478902col_2072_478917

00925njm 22002777a 4500 dc Riera, Roger author Tauler, Jana author Feiner Gracia, Natàlia author Borrós, Salvador author Fornaguera, Cristina author Albertazzi, Lorenzo author 2022-09-12T07:35:03Z 2022-09-12T07:35:03Z 2022-07-05 2022-09-07T12:39:46Z Nanomedicine emerged some decades ago with the hope to be the solution for most unmet medical needs. However, tracking materials at nanoscale is challenging to their reduced size, below the resolution limit of most conventional techniques. In this context, we propose the use of direct stochastic optical reconstruction microscopy (dSTORM) to study time stability and cell trafficking after transfection of oligopeptide end-modified poly(?-aminoester) (OM-pBAE) nanoparticles. We selected different combinations of cationic end oligopeptides (arginine - R; histidine - H; and lysine - K) among polymer libraries, since the oligopeptide combination demonstrated to be useful for different applications, such as vaccination and gene silencing. We demonstrate that their time evolution as well as their cell uptake and trafficking are dependent on the oligopeptide. This study opens the pave to broad mechanistic studies at nanoscale that could enable a rational selection of specific pBAE nanoparticles composition after determining their stability and cell trafficking. Nanomedicina Microscòpia mèdica Pèptids Nanomedicine Medical microscopy Peptides Complex pBAE Nanoparticle Cell Trafficking: Tracking Both Position and Composition Using Super Resolution Microscopy