Fiche publication
Date publication
décembre 2022
Journal
ACS applied nano materials
Auteurs
Membres identifiés du Cancéropôle Est :
Dr BIANCO Alberto
Tous les auteurs :
Cellot G, Jacquemin L, Reina G, Franceschi Biagioni A, Fontanini M, Chaloin O, Nishina Y, Bianco A, Ballerini L
Lien Pubmed
Résumé
Nanoscale graphene-based materials (GBMs) enable targeting subcellular structures of the nervous system, a feature crucial for the successful engineering of alternative nanocarriers to deliver drugs and to treat neurodisorders. Among GBMs, graphene oxide (GO) nanoflakes, showing good dispersibility in water solution and being rich of functionalizable oxygen groups, are ideal core structures for carrying biological active molecules to the brain, such as the neuropeptide Y (NPY). In addition, when unconjugated, these nanomaterials have been reported to modulate neuronal function . Although some GBM-based nanocarriers have been tested both in vitro and in vivo, a thorough characterization of covalent binding impact on the biological properties of the carried molecule and/or of the nanomaterial is still missing. Here, a copper(I)-catalyzed alkyne-azide cycloaddition strategy was employed to synthesize the GO-NPY complex. By investigating through electrophysiology the impact of these conjugates on the activity of hippocampal neurons, we show that the covalent modification of the nanomaterial, while making GO an inert platform for the vectorized delivery, enhances the duration of NPY pharmacological activity. These findings support the future use of GO for the development of smart platforms for nervous system drug delivery.
Référence
ACS Appl Nano Mater. 2022 12 23;5(12):17640-17651
