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@ARTICLE{Bode:167779,
author = {K. Bode$^*$ and C. Link$^*$ and P. H. Krammer$^*$ and H.
Weyd$^*$},
title = {{F}low-cytometric {D}etection of {L}ow-level {R}eactive
{O}xygen {S}pecies in {C}ell {L}ines and {P}rimary {I}mmune
{C}ells.},
journal = {Bio-protocol},
volume = {10},
number = {17},
issn = {2331-8325},
address = {Sunnyvale, CA},
publisher = {bio-protocol.org},
reportid = {DKFZ-2021-00541},
pages = {e3737},
year = {2020},
note = {#EA:D030#LA:D030#},
abstract = {Depending on its concentration and cellular origin the
production of reactive oxygen species (ROS) in the organism
serves a variety of functions. While high concentrations
during an oxidative burst are used to fight pathogens, low
to moderate amounts of ROS act as signaling molecules
important for several physiological processes such as
regulation of immune responses. The ROS-sensitive dye
2',7'-dichlorodihydrofluorescein diacetate (H2DCFDA) is an
inexpensive and well-established tool for measuring
intracellular ROS levels. However, it needs to be carefully
controlled to be able to draw firm conclusions on the nature
of ROS species produced and the cellular source of ROS
generation such as the enzyme complex NADPH-oxidase 2
(NOX-2). In this protocol, a robust method to determine low
intracellular ROS production using H2DCFDA was validated by
several ROS-specific as well as NOX-2-specific inhibitors.
Cells were treated with inhibitors or control substances
prior to treatment with the ROS-inducer of interest. H2DCFDA
was added only for the last 30 min of the treatment
schedule. To terminate its conversion, we used a
ROS-specific inhibitor until analysis by flow cytometry
within the FITC-channel (Ex: 488 nm/Em: 519 nm). In summary,
this protocol allows the detection of signaling-relevant
intracellular ROS production in cell lines and primary
immune cells (e.g., Mono Mac 6 cells and Bone marrow-derived
dendritic cells, respectively). Using this method in
combination with specific inhibitors, we were able to
validate even exceptionally low amounts of ROS produced by
NOX-2 and relevant for immune-regulatory signaling.},
keywords = {Bone Marrow-derived Dendritic Cells (BMDCs) (Other) /
Jurkat T cells (Other) / Mono Mac 6 (MM6) cells (Other) /
NADPH-oxidase 2 (NOX-2) (Other) / Reactive Oxygen Species
(ROS) (Other)},
cin = {D030},
ddc = {570},
cid = {I:(DE-He78)D030-20160331},
pnm = {314 - Tumor immunology (POF3-314)},
pid = {G:(DE-HGF)POF3-314},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:33659398},
pmc = {pmc:PMC7842666},
doi = {10.21769/BioProtoc.3737},
url = {https://inrepo02.dkfz.de/record/167779},
}