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@ARTICLE{Luchini:827565,
author = {Luchini, Alessandra and Gerelli, Yuri and Fragneto,
Giovanna and Nylander, Tommy and Pálsson, Gunnar K and
Appavou, Marie-Sousai and Paduano, Luigi},
title = {{N}eutron {R}eflectometry reveals the interaction between
functionalized {SPION}s and the surface of lipid bilayers},
journal = {Colloids and surfaces / B},
volume = {151},
issn = {0927-7765},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2017-01685},
pages = {76 - 87},
year = {2017},
abstract = {The safe application of nanotechnology devices in
biomedicine requires fundamental understanding on how they
interact with and affect the different components of
biological systems. In this respect, the cellular membrane,
the cell envelope, certainly represents an important target
or barrier for nanosystems. Here we report on the
interaction between functionalized SuperParamagnetic Iron
Oxide Nanoparticles (SPIONs), promising contrast agents for
Magnetic Resonance Imaging (MRI), and lipid bilayers that
mimic the plasma membrane. Neutron Reflectometry, supported
by Quartz Crystal Microbalance with Dissipation monitoring
(QCM-D) experiments, was used to characterize this
interaction by varying both SPION coating and lipid bilayer
composition. In particular, the interaction of two different
SPIONs, functionalized with a cationic surfactant and a
zwitterionic phospholipid, and lipid bilayers, containing
different amount of cholesterol, were compared. The obtained
results were further validated by Dynamic Light Scattering
(DLS) measurements and Cryogenic Transmission Electron
Microscopy (Cryo-TEM) images. None of the investigated
functionalized SPIONs were found to disrupt the lipid
membrane. However, in all case we observed the attachment of
the functionalized SPIONs onto the surface of the bilayers,
which was affected by the bilayer rigidity, i.e. the
cholesterol concentration.},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1},
ddc = {540},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-1-20110106},
pnm = {6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
Neutron Research (JCNS) (POF3-623)},
pid = {G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4},
experiment = {EXP:(DE-MLZ)TEM-MLZ-20151210},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000394475400010},
doi = {10.1016/j.colsurfb.2016.12.005},
url = {https://juser.fz-juelich.de/record/827565},
}