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@ARTICLE{Pora:874647,
author = {Pora, Anne and Yoon, Sungjun and Dreissen, Georg and
Hoffmann, Bernd and Merkel, Rudolf and Windoffer, Reinhard
and Leube, Rudolf E.},
title = {{R}egulation of keratin network dynamics by the mechanical
properties of the environment in migrating cells},
journal = {Scientific reports},
volume = {10},
number = {1},
issn = {2045-2322},
address = {[London]},
publisher = {Macmillan Publishers Limited, part of Springer Nature},
reportid = {FZJ-2020-01566},
pages = {4574},
year = {2020},
abstract = {Keratin intermediate filaments provide mechanical
resilience for epithelia. They are nevertheless highly
dynamic and turn over continuously, even in sessile
keratinocytes. The aim of this study was to characterize and
understand how the dynamic behavior of the keratin
cytoskeleton is integrated in migrating cells. By imaging
human primary keratinocytes producing fluorescent reporters
and by using standardized image analysis we detect
inward-directed keratin flow with highest rates in the cell
periphery. The keratin flow correlates with speed and
trajectory of migration. Changes in fibronectin-coating
density and substrate stiffness induces concordant changes
in migration speed and keratin flow. When keratinocytes are
pseudo-confined on stripes, migration speed and keratin flow
are reduced affecting the latter disproportionately. The
regulation of keratin flow is linked to the regulation of
actin flow. Local speed and direction of keratin and actin
flow are very similar in migrating keratinocytes with
keratin flow lagging behind actin flow. Conversely, reduced
actin flow in areas of high keratin density indicates an
inhibitory function of keratins on actin dynamics. Together,
we propose that keratins enhance persistence of migration by
directing actin dynamics and that the interplay of keratin
and actin dynamics is modulated by matrix adhesions.},
cin = {IBI-2},
ddc = {600},
cid = {I:(DE-Juel1)IBI-2-20200312},
pnm = {552 - Engineering Cell Function (POF3-552)},
pid = {G:(DE-HGF)POF3-552},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:32165652},
UT = {WOS:000520964500026},
doi = {10.1038/s41598-020-61242-5},
url = {https://juser.fz-juelich.de/record/874647},
}