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@ARTICLE{HerasBautista:154975,
author = {Heras-Bautista, Carlos O. and Katsen-Globa, Alisa and
Schloerer, Nils E. and Dieluweit, Sabine and Abd El Aziz,
Osama M. and Peinkofer, Gabriel and Attia, Wael A. and
Khalil, Markus and Brockmeier, Konrad and Hescheler, Jürgen
and Pfannkuche, Kurt},
title = {{T}he influence of physiological matrix conditions on
permanent culture of induced pluripotent stem cell-derived
cardiomyocytes},
journal = {Biomaterials},
volume = {35},
number = {26},
issn = {0142-9612},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2014-04182},
pages = {7374 - 7385},
year = {2014},
abstract = {Cardiomyocytes (CMs) from induced pluripotent stem (iPS)
cells mark an important achievement in the development of in
vitro pharmacological, toxicological and developmental
assays and in the establishment of protocols for cardiac
cell replacement therapy. Using CMs generated from murine
embryonic stem cells and iPS cells we found increased
cell–matrix interaction and more matured embryoid body
(EB) structures in iPS cell-derived EBs. However, neither
suspension-culture in form of purified cardiac clusters nor
adherence-culture on traditional cell culture plastic
allowed for extended culture of CMs. CMs grown for five
weeks on polystyrene exhibit signs of massive mechanical
stress as indicated by α-smooth muscle actin expression and
loss of sarcomere integrity. Hydrogels from polyacrylamide
allow adapting of the matrix stiffness to that of cardiac
tissue. We were able to eliminate the bottleneck of low cell
adhesion using
2,5-Dioxopyrrolidin-1-yl-6-acrylamidohexanoate as a
crosslinker to immobilize matrix proteins on the gels
surface. Finally we present an easy method to generate
polyacrylamide gels with a physiological Young's modulus of
55 kPa and defined surface ligand, facilitating the culture
of murine and human iPS-CMs, removing excess mechanical
stresses and reducing the risk of tissue culture artifacts
exerted by stiff substrates.},
cin = {ICS-7},
ddc = {570},
cid = {I:(DE-Juel1)ICS-7-20110106},
pnm = {453 - Physics of the Cell (POF2-453)},
pid = {G:(DE-HGF)POF2-453},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000339035000012},
pubmed = {pmid:24889032},
doi = {10.1016/j.biomaterials.2014.05.027},
url = {https://juser.fz-juelich.de/record/154975},
}