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@ARTICLE{Schtz:894976,
author = {Schütz, Markus B. and Renner, Alexander M. and Ilyas,
Shaista and Lê, Khan and Guliyev, Mehrab and Krapf, Philipp
and Neumaier, Bernd and Mathur, Sanjay},
title = {18{F}-{L}abeled magnetic nanovectors for bimodal cellular
imaging},
journal = {Biomaterials science},
volume = {9},
number = {13},
issn = {2047-4849},
address = {Cambridge},
publisher = {Royal Soc. of Chemistry},
reportid = {FZJ-2021-03505},
pages = {4717 - 4727},
year = {2021},
abstract = {Surface modification of nanocarriers enables selective
attachment to specific molecular targets within a complex
biological environment. Besides the enhanced uptake due to
specific interactions, the surfaceligands can be utilized
for radiolabeling applications for bimodal imaging ensured
by positron emission topography (PET) and magnetic resonance
imaging (MRI) functions in one source. Herein, we
describethe surface functionalization of magnetite (Fe3O4)
with folic acid as a target vector. Additionally, the
magnetic nanocarriers were conjugated with appropriate
ligands for subsequent copper-catalyzed azide–alkyne
cycloaddition or carbodiimide coupling reactions to
successfully achieve radiolabeling with the PET-emitter 18F.
The phase composition (XRD) and size analysis (TEM)
confirmed the formation of Fe3O4nanoparticles (6.82 nm ±
0.52 nm). The quantification of various surface
functionalities was performed by Fourier-transform infrared
spectroscopy (FT-IR) and ultraviolet-visible microscopy
(UV-Vis). An innovativemagnetic-HPLC method was developed in
this work for the determination of the radiochemical yield
of the 18F-labeled NPs. The as-prepared Fe3O4 particles
demonstrated high radiochemical yields andshowed high
cellular uptake in a folate receptor overexpressing MCF-7
cell line, validating bimodalimaging chemical design and a
magnetic HPLC system. This novel approach, combining folic
acidcappedFe3O4 nanocarriers as a targeting vector with 18F
labeling, is promising to apply this probe forbimodal
PET/MR-studies.},
cin = {INM-5},
ddc = {540},
cid = {I:(DE-Juel1)INM-5-20090406},
pnm = {5253 - Neuroimaging (POF4-525)},
pid = {G:(DE-HGF)POF4-5253},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:34032225},
UT = {WOS:000653661200001},
doi = {10.1039/D1BM00616A},
url = {https://juser.fz-juelich.de/record/894976},
}