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@ARTICLE{Monzel:276351,
author = {Monzel, C. and Schmidt, D. and Kleusch, C. and
Kirchenbüchler, D. and Seifert, U. and Smith, A-S and
Sengupta, K. and Merkel, Rudolf},
title = {{M}easuring fast stochastic displacements of bio-membranes
with dynamic optical displacement spectroscopy},
journal = {Nature Communications},
volume = {6},
issn = {2041-1723},
address = {London},
publisher = {Nature Publishing Group},
reportid = {FZJ-2015-06811},
pages = {8162 -},
year = {2015},
abstract = {Stochastic displacements or fluctuations of biological
membranes are increasingly recognized as an important aspect
of many physiological processes, but hitherto their precise
quantification in living cells was limited due to a lack of
tools to accurately record them. Here we introduce a novel
technique—dynamic optical displacement spectroscopy
(DODS), to measure stochastic displacements of membranes
with unprecedented combined spatiotemporal resolution of
20 nm and 10 μs. The technique was validated by
measuring bending fluctuations of model membranes. DODS was
then used to explore the fluctuations in human red blood
cells, which showed an ATP-induced enhancement of
non-Gaussian behaviour. Plasma membrane fluctuations of
human macrophages were quantified to this accuracy for the
first time. Stimulation with a cytokine enhanced
non-Gaussian contributions to these fluctuations. Simplicity
of implementation, and high accuracy make DODS a promising
tool for comprehensive understanding of stochastic membrane
processes.},
cin = {ICS-7},
ddc = {500},
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},
UT = {WOS:000364919400001},
pubmed = {pmid:26437911},
doi = {10.1038/ncomms9162},
url = {https://juser.fz-juelich.de/record/276351},
}