Issue 19, 2021

OBP-functionalized/hybrid superparamagnetic nanoparticles for Candida albicans treatment

Abstract

Infections caused by the opportunistic yeast Candida albicans are one of the major life threats for hospitalized and immunocompromised patients, as a result of antibiotic and long-term antifungal treatment abuse. Odorant binding proteins can be considered interesting candidates to develop systems able to reduce the proliferation and virulence of this yeast, because of their intrinsic antimicrobial properties and complexation capabilities toward farnesol, the major quorum sensing molecule of Candida albicans. In the present study, a hybrid system characterized by a superparamagnetic iron oxide core functionalized with bovine odorant binding protein (bOBP) was successfully developed. The nanoparticles were designed to be suitable for magnetic protein delivery to inflamed areas of the body. The inorganic superparamagnetic core was characterized by an average diameter of 6.5 ± 1.1 nm and a spherical shape. Nanoparticles were functionalized by using 11-phosphonoundecanoic acid as spacer and linked to bOBP via amide bonds, resulting in a concentration level of 26.0 ± 1.2 mg bOBP/g SPIONs. Finally, both the biocompatibility of the developed hybrid system and the fungistatic activity against Candida albicans by submicromolar OBP levels were demonstrated by in vitro experiments.

Graphical abstract: OBP-functionalized/hybrid superparamagnetic nanoparticles for Candida albicans treatment

Supplementary files

Article information

Article type
Paper
Submitted
09 2 2021
Accepted
04 3 2021
First published
17 3 2021
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2021,11, 11256-11265

OBP-functionalized/hybrid superparamagnetic nanoparticles for Candida albicans treatment

N. Riboni, C. Spadini, C. S. Cabassi, F. Bianchi, S. Grolli, V. Conti, R. Ramoni, F. Casoli, L. Nasi, C. de Julián Fernández, P. Luches and M. Careri, RSC Adv., 2021, 11, 11256 DOI: 10.1039/D1RA01112J

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