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@ARTICLE{Stengelin:894716,
author = {Stengelin, Elena and Nzigou Mombo, Brice and Mondeshki,
Mihail and Beltramo, Guillermo L. and Lange, Martin A. and
Schmidt, Patrick and Frerichs, Hajo and Wegner, Serafine V.
and Seiffert, Sebastian},
title = {{R}ational {D}esign of {T}hermoresponsive {M}icrogel
{T}emplates with {P}olydopamine {S}urface {C}oating for
{M}icrotissue {A}pplications},
journal = {Macromolecular bioscience},
volume = {21},
number = {9},
issn = {1616-5195},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2021-03368},
pages = {2100209},
year = {2021},
abstract = {Functional microgels provide a versatile basis for
synthetic in vitro platforms as alternatives to animal
experiments. The tuning of the physical, chemical, and
biological properties of synthetic microgels can be achieved
by blending suitable polymers and formulating them such to
reflect the heterogenous and complex nature of biological
tissues. Based on this premise, this paper introduces the
development of volume-switchable core–shell microgels as
3D templates to enable cell growth for microtissue
applications, using a systematic approach to tune the
microgel properties based on a deep conceptual and practical
understanding. Microscopic microgel design, such as the
tailoring of the microgel size and spherical shape, is
achieved by droplet-based microfluidics, while on a
nanoscopic scale, a thermoresponsive polymer basis,
poly(N-isopropylacrylamide) (PNIPAAm), is used to provide
the microgel volume switchability. Since PNIPAAm has only
limited cell-growth promoting properties, the cell adhesion
on the microgel is further improved by surface modification
with polydopamine, which only slightly affects the microgel
properties, thereby simplifying the system. To further tune
the microgel thermoresponsiveness, different amounts of
N-hydroxyethylacrylamide are incorporated into the PNIPAAm
network. In a final step, cell growth on the microgel
surface is investigated, both at a single microgel platform
and in spheroidal cell structures.},
cin = {IBI-2},
ddc = {570},
cid = {I:(DE-Juel1)IBI-2-20200312},
pnm = {5241 - Molecular Information Processing in Cellular Systems
(POF4-524)},
pid = {G:(DE-HGF)POF4-5241},
typ = {PUB:(DE-HGF)16},
pubmed = {34342150},
UT = {WOS:000680490200001},
doi = {10.1002/mabi.202100209},
url = {https://juser.fz-juelich.de/record/894716},
}