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@ARTICLE{Unverricht:845520,
author = {Unverricht, Marcus and Giesen, Ulrich and Kriehuber, Ralf},
title = {{C}omparative gene expression analysis after exposure to
$^{123}${I}-iododeoxyuridine, γ- and
α-radiation—potential biomarkers for the discrimination
of radiation qualities},
journal = {Journal of radiation research},
volume = {59},
number = {4},
issn = {0449-3060},
address = {Kawaguchi},
publisher = {J-STAGE},
reportid = {FZJ-2018-02754},
pages = {411–429},
year = {2018},
abstract = {Gene expression analysis was carried out in Jurkat cells in
order to identify candidate genes showing significant gene
expression alterations allowing robust discrimination of the
Auger emitter $^{123}$I, incorporated into the DNA as
$^{123}$I-iododeoxyuridine ($^{123}$IUdR), from α- and
γ-radiation. The γ-H2AX foci assay was used to determine
equi-effect doses or activity, and gene expression analysis
was carried out at similar levels of foci induction.
Comparative gene expression analysis was performed employing
whole human genome DNA microarrays. Candidate genes had to
show significant expression changes and no altered gene
regulation or opposite regulation after exposure to the
radiation quality to be compared. The gene expression of all
candidate genes was validated by quantitative real-time PCR.
The functional categorization of significantly deregulated
genes revealed that chromatin organization and apoptosis
were generally affected. After exposure to $^{123}$IUdR,
α-particles and γ-rays, at equi-effect doses/activity,
155, 316 and 982 genes were exclusively regulated,
respectively. Applying the stringent requirements for
candidate genes, four (PPP1R14C, TNFAIP8L1, DNAJC1 and
PRTFDC1), one (KLF10) and one (TNFAIP8L1) gene(s) were
identified, respectively allowing reliable discrimination
between γ- and $^{123}$IUdR exposure, γ- and α-radiation,
and α- and 123IUdR exposure, respectively. The Auger
emitter $^{123}$I induced specific gene expression patterns
in Jurkat cells when compared with γ- and α-irradiation,
suggesting a unique cellular response after $^{123}$IUdR
exposure. Gene expression analysis might be an effective
tool for identifying biomarkers for discriminating different
radiation qualities and, furthermore, might help to explain
the varying biological effectiveness at the mechanistic
level.},
cin = {S-US / ZEA-1},
ddc = {610},
cid = {I:(DE-Juel1)S-US-20090406 / I:(DE-Juel1)ZEA-1-20090406},
pnm = {899 - ohne Topic (POF3-899)},
pid = {G:(DE-HGF)POF3-899},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29800458},
UT = {WOS:000439732900004},
doi = {10.1093/jrr/rry038},
url = {https://juser.fz-juelich.de/record/845520},
}