Multifunctional graphene quantum dots: A therapeutic strategy for neurodegenerative diseases by regulating calcium influx, crossing the blood-brain barrier and inhibiting A-protein aggregation
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Date
2024-02-01
Authors
Gomez Perez, Inmaculada Jennifer
Křížková, Petra
Dolečková, Anna
Cardo, Lucia
Wetzl, Cecília
Pizúrová, Naděžda
Prato, Maurizio
Medalová, Jiřina
Zajíčková, Lenka
ORCID
0000-0002-6906-8906Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
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Abstract
Multifunctional nanoparticles could be the hallmark for the treatment of neurodegenerative diseases. Dissociation of protein aggregates causing neuronal damage and transfer of specific drugs which can downregulate neuronal excitotoxicity by inhibiting glutamatergic N-Methyl-D-Aspartate-receptors (NMDA) and then reducing calcium influx are among the main factors to consider for proper therapy. Here, we present a multiplatform based on nitrogen-doped graphene quantum dots (NGQDs) with such functionalities. The NGQDs were functionalized with Memantine, the clinically used drug, via covalent and non-covalent coupling, and we confirmed that the pharmaceutical activity was not altered. Apart from that, using xCELLigence technology and flow cytometric analysis of ABC transporter function, we uncovered that the ABC transporters of the blood-brain barrier (BBB) do not affect the ability of NGQD to cross BBB. Surprisingly, this study found that NGQDs have an inhibitory effect on NMDA receptors, thus supporting the action of Memantine. Moreover, NGQDs and their derivatives demonstrated the potential to dissociate beta-amyloid aggregates while possessing features suitable for bioimaging in various cell lines.
Description
Citation
Applied Materials Today. 2024, vol. 36, issue 2, p. 1-9.
https://www.sciencedirect.com/science/article/pii/S2352940724000180?via%3Dihub
https://www.sciencedirect.com/science/article/pii/S2352940724000180?via%3Dihub
Document type
Peer-reviewed
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Published version
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en