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@ARTICLE{Springer:861443,
author = {Springer, Ronald and Zielinski, Alexander and Pleschka,
Catharina and Hoffmann, Bernd and Merkel, Rudolf},
title = {{U}nbiased pattern analysis reveals highly diverse
responses of cytoskeletal systems to cyclic straining},
journal = {PLOS ONE},
volume = {14},
number = {3},
issn = {1932-6203},
address = {San Francisco, California, US},
publisher = {PLOS},
reportid = {FZJ-2019-01915},
pages = {e0210570 -},
year = {2019},
abstract = {In mammalian cells, actin, microtubules, and various types
of cytoplasmic intermediate filaments respond to external
stretching. Here, we investigated the underlying processes
in endothelial cells plated on soft substrates from silicone
elastomer. After cyclic stretch (0.13 Hz, $14\%$ strain
amplitude) for periods ranging from 5 min to 8 h, cells were
fixed and double-stained for microtubules and either actin
or vimentin. Cell images were analyzed by a two-step
routine. In the first step, micrographs were segmented for
potential fibrous structures. In the second step, the
resulting binary masks were auto- or cross-correlated.
Autocorrelation of segmented images provided a sensitive and
objective measure of orientational and translational order
of the different cytoskeletal systems. Aligning of
correlograms from individual cells removed the influence of
only partial alignment between cells and enabled
determination of intrinsic cytoskeletal order. We found that
cyclic stretching affected the actin cytoskeleton most,
microtubules less, and vimentin mostly only via
reorientation of the whole cell. Pharmacological disruption
of microtubules had barely any influence on actin ordering.
The similarity, i.e., cross-correlation, between vimentin
and microtubules was much higher than the one between actin
and microtubules. Moreover, prolonged cyclic stretching
slightly decoupled the cytoskeletal systems as it reduced
the cross-correlations in both cases. Finally, actin and
microtubules were more correlated at peripheral regions of
cells whereas vimentin and microtubules correlated more in
central regions.},
cin = {ICS-7},
ddc = {610},
cid = {I:(DE-Juel1)ICS-7-20110106},
pnm = {552 - Engineering Cell Function (POF3-552)},
pid = {G:(DE-HGF)POF3-552},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30865622},
UT = {WOS:000461048900007},
doi = {10.1371/journal.pone.0210570},
url = {https://juser.fz-juelich.de/record/861443},
}