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@ARTICLE{Garcia:281437,
author = {Garcia, Simon and Hannezo, Edouard and Elgeti, Jens and
Joanny, Jean-Francois and Silberzan, Pascal and Gov, Nir S.},
title = {{P}hysics of active jamming during collective cellular
motion in a monolayer},
journal = {Proceedings of the National Academy of Sciences of the
United States of America},
volume = {112},
issn = {0027-8424},
address = {Washington, DC},
publisher = {National Acad. of Sciences},
reportid = {FZJ-2016-01130},
pages = {15314-15319},
year = {2015},
abstract = {Although collective cell motion plays an important role,
for example during wound healing, embryogenesis, or cancer
progression, the fundamental rules governing this motion are
still not well understood, in particular at high cell
density. We study here the motion of human bronchial
epithelial cells within a monolayer, over long times. We
observe that, as the monolayer ages, the cells slow down
monotonously, while the velocity correlation length first
increases as the cells slow down but eventually decreases at
the slowest motions. By comparing experiments, analytic
model, and detailed particle-based simulations, we shed
light on this biological amorphous solidification process,
demonstrating that the observed dynamics can be explained as
a consequence of the combined maturation and strengthening
of cell-cell and cell-substrate adhesions. Surprisingly, the
increase of cell surface density due to proliferation is
only secondary in this process. This analysis is confirmed
with two other cell types. The very general relations
between the mean cell velocity and velocity correlation
lengths, which apply for aggregates of self-propelled
particles, as well as motile cells, can possibly be used to
discriminate between various parameter changes in vivo, from
noninvasive microscopy data.},
cin = {IAS-2 / ICS-2},
ddc = {000},
cid = {I:(DE-Juel1)IAS-2-20090406 / I:(DE-Juel1)ICS-2-20110106},
pnm = {553 - Physical Basis of Diseases (POF3-553)},
pid = {G:(DE-HGF)POF3-553},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000366404200043},
pubmed = {pmid:26627719},
doi = {10.1073/pnas.1510973112},
url = {https://juser.fz-juelich.de/record/281437},
}