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@INPROCEEDINGS{Unverricht:188712,
author = {Unverricht, Marcus and Giesen and Pomplun, Ekkehard and
Kriehuber, Ralf},
title = {{C}omparative analysis of gene expression data after
exposure to {I}-123-iododeoxyuridine, γ-rays and
α-particles},
reportid = {FZJ-2015-02036},
year = {2014},
abstract = {Gene expression analysis was carried out in Jurkat cells in
order to identify robust candidate genes showing significant
gene expression alterations allowing the discrimination of
radiation qualities.Equi-effect radiation doses, i.e.
radiation doses and exposure conditions causing the same
biological effect level, were determined with regard to
micronucleus formation, γ-H2AX foci signal intensity and
apoptosis induction after γ-irradiation, α-irradiation and
exposure to the Auger electron emitter
I-123-iododeoxyuridine (123IdU). Microarray gene expression
analysis was performed after exposure to equi-effect
radiation doses of all three radiation qualities. Candidate
genes for the discrimination of radiation quality have to
show a significant expression change after exposure to a
specific radiation quality and display no altered gene
regulation or a conversely regulation in response to
exposure to the other radiation qualities investigated. Gene
expression of selected candidate genes was validated via
qRT-PCR. Biological processes and pathways of significantly
regulated genes were subsequently analyzed.At equi-effect
doses the results of the gene expression analysis showed
that 359, 598 and 1339 genes are significantly regulated
after exposure to 123IdU, α-particles and γ-rays,
respectively. Only 4, 1 and 1 gene(s) are identified
allowing a reliable discrimination between γ- vs.
123IdU-exposure, γ- vs. α-radiation and α- vs.
123IdU-exposure, respectively.γ-rays induce pronounced
alterations in gene expression in Jurkat cells when compared
to 123IdU and α-particles at equi-effect radiation doses.
Gene expression analysis in Jurkat cells might suggest that
the discrimination of different radiation qualities by means
of gene expression is possible.},
month = {Sep},
date = {2014-09-29},
organization = {17th Annual Meeting of the German
Society for Biological Radiation
Research, Tübingen (Germany), 29 Sep
2014 - 1 Oct 2014},
subtyp = {After Call},
cin = {S-US},
cid = {I:(DE-Juel1)S-US-20090406},
pnm = {899 - ohne Topic (POF2-899)},
pid = {G:(DE-HGF)POF2-899},
typ = {PUB:(DE-HGF)24},
url = {https://juser.fz-juelich.de/record/188712},
}