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@ARTICLE{Barbul:852738,
author = {Barbul, Alexander and Singh, Karandeep and Horev−Azaria,
Limor and Dasgupta, Sabyasachi and Auth, Thorsten and
Korenstein, Rafi and Gompper, Gerhard},
title = {{N}anoparticle-{D}ecorated {E}rythrocytes {R}eveal {T}hat
{P}article {S}ize {C}ontrols the {E}xtent of {A}dsorption,
{C}ell {S}hape, and {C}ell {D}eformability},
journal = {ACS applied nano materials},
volume = {1},
number = {8},
issn = {2574-0970},
address = {Washington, DC},
publisher = {ACS Publications},
reportid = {FZJ-2018-05610},
pages = {3785 - 3799},
year = {2018},
abstract = {Unraveling the interaction of nanoparticles with living
cells is fundamental for nanomedicine and nanotoxicology.
Erythrocytes are abundant and serve as model cells with
well-characterized properties. Quantitative experiments
addressing the binding of carboxylated polystyrene
nanoparticles to human erythrocytes reveal saturated
adsorption with only sparse $(∼2\%)$ coverage of the cell
membrane by partial-wrapped nanoparticles. The independence
of the adsorbed area on particle size suggests a restricted
number of adhesive sites on the membrane. Using a continuum
membrane model combined with nanoparticle–membrane
adhesion mediated by receptor–ligand bonds, we predict
high bond energies and low receptor densities for
partial-wrapped particles. With the help of computer
simulations, we determine sets of receptor densities,
receptor diffusion coefficients, minimal numbers of bound
receptors required for multivalent binding, and maximal
possible numbers of bound receptors that reproduce the
experimental nanoparticle adsorption data. Nanoparticle
decoration of erythrocytes leads to shape transformations
and reduced cell deformability. We quantitatively
characterize and interpret erythrocyte shape and
deformability changes. The shape changes also offer insights
into the modification of the mechanical properties of other
mammalian cell membranes by adhered nanoparticles. A
potential application of nanoparticle-loaded erythrocytes is
retarded targeted drug delivery with a long lifetime of the
particles in the blood circulation.},
cin = {ICS-2},
ddc = {540},
cid = {I:(DE-Juel1)ICS-2-20110106},
pnm = {552 - Engineering Cell Function (POF3-552)},
pid = {G:(DE-HGF)POF3-552},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000461400900006},
doi = {10.1021/acsanm.8b00357},
url = {https://juser.fz-juelich.de/record/852738},
}