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Title

In Vivo Retargeting of Poly(beta aminoester) (OM-PBAE) Nanoparticles is Influenced by Protein Corona

AuthorsFornaguera, Cristina ; Guerra-Rebollo, Marta; Lázaro, Miguel Ángel; Cascante, Anna; Rubio, Núria ; Blanco, Jerónimo ; Borrós, Salvador
KeywordsRetinol
Liver retargeting
Protein corona
OM-PBAE nanoparticles
Nanoparticles
Issue Date2-Sep-2019
PublisherWiley-Blackwell
CitationAdvanced Healthcare Materials 8 (19): 1900849 (2019)
AbstractOne of the main bottlenecks in the translation of nanomedicines from research to clinics is the difficulty in designing nanoparticles actively vectorized to the target tissue, a key parameter to ensure efficacy and safety. In this group, a library of poly(beta aminoester) polymers is developed, and it is demonstrated that adding specific combinations of terminal oligopeptides (OM-PBAE), in vitro transfection is cell selective. The current study aims to actively direct the nanoparticles to the liver by the addition of a targeting molecule. To achieve this objective, retinol, successfully attached to OM-PBAE, is selected as hepatic targeting moiety. It is demonstrated that organ biodistribution is tailored, achieving the desired liver accumulation. Regarding cell type transfection, antigen presenting cells in the liver are those showing the highest transfection. Thanks to proteomics studies, organ but not cellular biodistribution can be explained by the formation of differential protein coronas. Therefore, organ biodistribution is governed by differential protein corona formed when retinol is present, while cellular biodistribution is controlled by the end oligopeptides type. In summary, this work is a proof of concept that demonstrates the versatility of these OM-PBAE nanoparticles, in terms of the modification of the biodistribution of OM-PBAE nanoparticles adding active targeting moieties. © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Publisher version (URL)https://doi.org/10.1002/adhm.201900849
URIhttp://hdl.handle.net/10261/202221
DOI10.1002/adhm.201900849
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