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@ARTICLE{Otto:601681,
author = {Otto, Ferdinand and Dallari, Francesco and Westermeier,
Fabian and Wieland, D. C. Florian and Parak, Wolfgang J. and
Lehmkühler, Felix and Schulz, Florian},
title = {{T}he dynamics of {PEG}‐coated nanoparticles in
concentrated protein solutions up to the molecular crowding
range},
journal = {Aggregate},
volume = {5},
number = {3},
issn = {2692-4560},
address = {Hoboken, NJ},
publisher = {Wiley},
reportid = {PUBDB-2024-00373},
pages = {e483},
year = {2024},
abstract = {Polymer-coated nanoparticles are widely studied in the
context of nanomedicine and it is therefore of utmost
importance to understand not only how their structure but
also how their colloidal dynamics are affected by
physiologically relevant conditions. A characteristic
feature of the cytosol of cells is the very high
concentration of proteins among other matrix components,
often termed macromolecular crowding. Here, the structure
and colloidal dynamics of poly(ethylene glycol) (PEG)-coated
gold nanoparticles in the presence of bovine serum albumin
(BSA) concentrations ranging from 0 to 265 mg/mL are studied
with X-ray photon correlation spectroscopy. For
protein–nanoparticle mixtures with high BSA
concentrations, comparable to intracellular levels, a
significant deviation of the apparent viscosity from
expectations for pure BSA solutions is found. The findings
strongly indicate that the nanoscopic viscous properties of
the dense protein solutions are significantly affected by
the nanoparticles. At these high concentrations, the
colloidal stability of the samples depends on the molecular
weight of the coating PEG–ligand, whereas at lower
concentrations no differences are observed.},
cin = {FS-SMP / FS-CXS / FS-PETRA-S / UNI/CUI},
ddc = {600},
cid = {I:(DE-H253)FS-SMP-20171124 / I:(DE-H253)FS-CXS-20130727 /
I:(DE-H253)FS-PETRA-S-20210408 /
$I:(DE-H253)UNI_CUI-20121230$},
pnm = {633 - Life Sciences – Building Blocks of Life: Structure
and Function (POF4-633) / GRK 2536 - GRK 2536:
Hybridstrukturen auf der Nanometerskala: Chemische Konzepte
zur Herstellung heterogener Nanostrukturen mit anisotropen
Materialeigenschaften (NANOHYBRID) (408076438) / DFG project
G:(GEPRIS)390715994 - EXC 2056: CUI: Advanced Imaging of
Matter (390715994)},
pid = {G:(DE-HGF)POF4-633 / G:(GEPRIS)408076438 /
G:(GEPRIS)390715994},
experiment = {EXP:(DE-MLZ)External-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001136383900001},
doi = {10.1002/agt2.483},
url = {https://bib-pubdb1.desy.de/record/601681},
}