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@ARTICLE{Li:202044,
author = {Li, Pinggui and Greben, Kyrylo and Wördenweber, Roger and
Simon, Ulrich and Offenhäusser, Andreas and Mayer, Dirk},
title = {{T}uning neuron adhesion and neurite guiding using
functionalized {A}u{NP}s and backfill chemistry},
journal = {RSC Advances},
volume = {5},
number = {49},
issn = {2046-2069},
address = {London},
publisher = {RSC Publishing},
reportid = {FZJ-2015-04333},
pages = {39252 - 39262},
year = {2015},
abstract = {The adhesion of neurons depends on the interplay between
attractive as well as repellant cues in the cell membrane
and adhesion ligands in their cellular environment. In this
study, an easy and versatile strategy is presented to
control the density of cell binding sites embedded in a cell
repulsive environment attached to a solid surface. Gold
nanoparticles modified by positively charged aminoalkyl
thiols are used as artificial neuron adhesion ligands. The
density of the nanoparticles and their environment is varied
by applying either no backfill, poly(ethylene
glycol)-silane, or octyltrichlorosilane backfill. By this
means the chemical composition of both cell attractive
adhesion ligands and surrounding repellant cues is tuned on
the nanometer scale. Primary rat cortical neurons are
cultured on these particle modified surfaces. The viability
and neuritogenesis of neurons is investigated as a function
of particle density and background composition. A strong
dependence of neuron viability on both averaged particle
density and backfill composition is found in particular for
intermediate particle packing. At high particle densities,
the kind of backfill does not affect the cell viability but
influences the development of neurites. This knowledge is
used to enhance the guiding efficiency of neuron adhesion to
more than $90\%$ on nanopatterned surfaces.},
cin = {ICS-8 / PGI-8 / JARA-FIT},
ddc = {540},
cid = {I:(DE-Juel1)ICS-8-20110106 / I:(DE-Juel1)PGI-8-20110106 /
$I:(DE-82)080009_20140620$},
pnm = {552 - Engineering Cell Function (POF3-552)},
pid = {G:(DE-HGF)POF3-552},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000354201500053},
doi = {10.1039/C5RA06901G},
url = {https://juser.fz-juelich.de/record/202044},
}