Peroxidase (POD) Mimicking Activity of Different Types of Poly(ethyleneimine)-Mediated Prussian Blue Nanoparticles
Gunatilake, Udara Bimendra (University of Montpellier)
Pérez-López, Briza (Vall d'Hebron Institut de Recerca (VHIR))
Urpí Fernández, Ana María (Vall d'Hebron Institut de Recerca (VHIR))
Prat-Trunas, Judit (Universitat Autònoma de Barcelona)
Carrera i Cardona, Gerard (Vall d'Hebron Institut de Recerca (VHIR))
Félix, Gautier (University of Montpellier)
Sene, Saad (University of Montpellier)
Beaudhuin, Mickaël (University of Montpellier)
Dupin, Jean-Charles (Institut des Sciences Analytiques et de Physicochimie Pour l'Environnement et les Matériaux (Pau, França))
Allouche, Joachim (Institut des Sciences Analytiques et de Physicochimie Pour l'Environnement et les Matériaux (Pau, França))
Guari, Yannick (University of Montpellier)
Larionova, Joulia (University of Montpellier)
Baldrich Rubio, Eva (Vall d'Hebron Institut de Recerca (VHIR))

Data:	2024
Resum:	Prussian blue nanoparticles (PBNPs) have been identified as a promising candidate for biomimetic peroxidase (POD)-like activity, specifically due to the metal centres (Fe 3+ /Fe 2+) of Prussian blue (PB), which have the potential to function as catalytically active centres. The decoration of PBNPs with desired functional polymers (such as amino- or carboxylate-based) primarily facilitates the subsequent linkage of biomolecules to the nanoparticles for their use in biosensor applications. Thus, the elucidation of the catalytic POD mimicry of these systems is of significant scientific interest but has not been investigated in depth yet. In this report, we studied a series of poly(ethyleneimine) (PEI)-mediated PBNPs (PB/PEI NPs) prepared using various synthesis protocols. The resulting range of particles with varying size (~19-92 nm) and shape combinations were characterised in order to gain insights into their physicochemical properties. The POD-like nanozyme activity of these nanoparticles was then investigated by utilising a 3,3',5,5'-tetramethylbenzidine (TMB)/HO system, with the catalytic performance of the natural enzyme horseradish peroxidase (HRP) serving as a point of comparison. It was shown that most PB/PEI NPs displayed higher catalytic activity than the PBNPs, with higher activity observed in particles of smaller size, higher Fe content, and higher Fe 2+ /Fe 3+ ratio. Furthermore, the nanoparticles demonstrated enhanced chemical stability in the presence of acid, sodium azide, or high concentrations of HO when compared to HRP, confirming the viability of PB/PEI NPs as a promising nanozymatic material. This study disseminates fundamental knowledge on PB/PEI NPs and their POD-like activities, which will facilitate the selection of an appropriate particle type for future biosensor applications.
Ajuts:	Instituto de Salud Carlos III AC21_2/00021
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Prussian blue nanoparticles (PBNPs) ; Nanozyme ; Poly(ethyleneimine) (PEI) ; Peroxidase mimetic ; Amino-rich polymers ; Catalysts ; Catalytic inhibition ; Cyano-bridged coordination polymers
Publicat a:	Nanomaterials, Vol. 15 (december 2024) , ISSN 2079-4991

DOI: 10.3390/nano15010041
PMID: 39791800

21 p, 5.0 MB

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