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@ARTICLE{Krmer:819825,
author = {Krämer, Christina and Wiechert, Wolfgang and Kohlheyer,
Dietrich},
title = {{T}ime-resolved, single-cell analysis of induced and
programmed cell death via non-invasive propidium iodide and
counterstain perfusion},
journal = {Scientific reports},
volume = {6},
issn = {2045-2322},
address = {London},
publisher = {Nature Publishing Group},
reportid = {FZJ-2016-05412},
pages = {32104},
year = {2016},
abstract = {Conventional propidium iodide (PI) staining requires the
execution of multiple steps prior to analysis, potentially
affecting assay results as well as cell vitality. In this
study, this multistep analysis method has been transformed
into a single-step, non-toxic, real-time method via
live-cell imaging during perfusion with 0.1 μM PI inside
a microfluidic cultivation device. Dynamic PI staining was
an effective live/dead analytical tool and demonstrated
consistent results for single-cell death initiated by direct
or indirect triggers. Application of this method for the
first time revealed the apparent antibiotic tolerance of
wild-type Corynebacterium glutamicum cells, as indicated by
the conversion of violet fluorogenic calcein acetoxymethyl
ester (CvAM). Additional implementation of this method
provided insight into the induced cell lysis of Escherichia
coli cells expressing a lytic toxin-antitoxin module,
providing evidence for non-lytic cell death and cell
resistance to toxin production. Finally, our dynamic PI
staining method distinguished necrotic-like and
apoptotic-like cell death phenotypes in Saccharomyces
cerevisiae among predisposed descendants of
nutrient-deprived ancestor cells using PO-PRO-1 or green
fluorogenic calcein acetoxymethyl ester (CgAM) as
counterstains. The combination of single-cell cultivation,
fluorescent time-lapse imaging, and PI perfusion facilitates
spatiotemporally resolved observations that deliver new
insights into the dynamics of cellular behaviour.},
cin = {IBG-1},
ddc = {000},
cid = {I:(DE-Juel1)IBG-1-20101118},
pnm = {581 - Biotechnology (POF3-581)},
pid = {G:(DE-HGF)POF3-581},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000382366300001},
pubmed = {pmid:27580964},
doi = {10.1038/srep32104},
url = {https://juser.fz-juelich.de/record/819825},
}