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@ARTICLE{Solon:57345,
author = {Solon, J. and Levental, I. and Sengupta, K. and Georges, P.
C. and Janmey, P. A.},
title = {{F}ibroblast adaptation and stiffness matching to soft
elastic substrates},
journal = {Biophysical journal},
volume = {93},
issn = {0006-3495},
address = {New York, NY},
publisher = {Rockefeller Univ. Press},
reportid = {PreJuSER-57345},
pages = {4453 - 4461},
year = {2007},
note = {Record converted from VDB: 12.11.2012},
abstract = {Many cell types alter their morphology and gene expression
profile when grown on chemically equivalent surfaces with
different rigidities. One expectation of this change in
morphology and composition is that the cell's internal
stiffness, governed by cytoskeletal assembly and production
of internal stresses, will change as a function of substrate
stiffness. Atomic force microscopy was used to measure the
stiffness of fibroblasts grown on fibronectin-coated
polyacrylamide gels of shear moduli varying between 500 and
40,000 Pa. Indentation measurements show that the cells'
elastic moduli were equal to, or slightly lower than, those
of their substrates for a range of soft gels and reached a
saturating value at a substrate rigidity of 20 kPa. The
amount of cross-linked F-actin sedimenting at low
centrifugal force also increased with substrate stiffness.
Together with enhanced actin polymerization and
cross-linking, active contraction of the cytoskeleton can
also modulate stiffness by exploiting the nonlinear
elasticity of semiflexible biopolymer networks. These
results suggest that within a range of stiffness spanning
that of soft tissues, fibroblasts tune their internal
stiffness to match that of their substrate, and modulation
of cellular stiffness by the rigidity of the environment may
be a mechanism used to direct cell migration and wound
repair.},
keywords = {Adaptation, Physiological: physiology / Animals / Cell
Adhesion: physiology / Cell Movement: physiology / Computer
Simulation / Elasticity / Mechanotransduction, Cellular:
physiology / Mice / Models, Biological / NIH 3T3 Cells / J
(WoSType)},
cin = {IBN-4},
ddc = {570},
cid = {I:(DE-Juel1)VDB802},
pnm = {Kondensierte Materie},
pid = {G:(DE-Juel1)FUEK414},
shelfmark = {Biophysics},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:18045965},
pmc = {pmc:PMC2098710},
UT = {WOS:000251298100037},
doi = {10.1529/biophysj.106.101386},
url = {https://juser.fz-juelich.de/record/57345},
}