Home > Publications database > Interaction with Human Serum Proteins Reveals Biocompatibility of Phosphocholine-Functionalized SPIONs and Formation of Albumin-Decorated Nanoparticles > print

001     889062
005     20210130011207.0
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100 1 _ |a Russo Krauss, Irene
|0 0000-0001-8124-6034
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|e Corresponding author
245 _ _ |a Interaction with Human Serum Proteins Reveals Biocompatibility of Phosphocholine-Functionalized SPIONs and Formation of Albumin-Decorated Nanoparticles
260 _ _ |a Washington, DC
|c 2020
|b ACS Publ.
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520 _ _ |a Nanoparticles (NPs) are increasingly exploited as diagnostic and therapeutic devices in medicine. Among them, superparamagnetic nanoparticles (SPIONs) represent very promising tools for magnetic resonance imaging, local heaters for hyperthermia, and nanoplatforms for multimodal imaging and theranostics. However, the use of NPs, including SPIONs, in medicine presents several issues: first, the encounter with the biological world and proteins in particular. Indeed, nanoparticles can suffer from protein adsorption, which can affect NP functionality and biocompatibility. In this respect, we have investigated the interaction of small SPIONs covered by an amphiphilic double layer of oleic acid/oleylamine and 1-octadecanoyl-sn-glycero-3-phosphocholine with two abundant human plasma proteins, human serum albumin (HSA) and human transferrin. By means of spectroscopic and scattering techniques, we analyzed the effect of SPIONs on protein structure and the binding affinities, and only found strong binding in the case of HSA. In no case did SPIONs alter the protein structure significantly. We structurally characterized HSA/SPIONs complexes by means of light and neutron scattering, highlighting the formation of a monolayer of protein molecules on the NP surface. Their interaction with lipid bilayers mimicking biological membranes was investigated by means of neutron reflectivity. We show that HSA/SPIONs do not affect lipid bilayer features and could be further exploited as a nanoplatform for future applications. Overall, our findings point toward a high biocompatibility of phosphocholine-decorated SPIONs and support their use in nanomedicine.
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700 1 _ |a Picariello, Alessandra
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700 1 _ |a Vitiello, Giuseppe
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700 1 _ |a De Santis, Augusta
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700 1 _ |a Koutsioumpas, Alexandros
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700 1 _ |a Houston, Judith E.
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700 1 _ |a Fragneto, Giovanna
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700 1 _ |a Paduano, Luigi
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773 _ _ |a 10.1021/acs.langmuir.0c01083
|g Vol. 36, no. 30, p. 8777 - 8791
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856 4 _ |u https://juser.fz-juelich.de/record/889062/files/acs.langmuir.0c01083.pdf
856 4 _ |y Published on 2020-06-23. Available in OpenAccess from 2021-06-23.
|u https://juser.fz-juelich.de/record/889062/files/langmuir_revised.pdf
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