% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@ARTICLE{Dahmen:837944,
author = {Dahmen, Volker and Schmitz, Sabine and Kriehuber, Ralf},
title = {{I}nduction of the chromosomal translocation t(14;18) by
targeting the {BCL}-2 locus with specific binding
{I}-125-labeled triplex-forming oligonucleotides},
journal = {Mutation research / Genetic toxicology and environmental
mutagenesis},
volume = {823},
issn = {1383-5718},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2017-06705},
pages = {58 - 64},
year = {2017},
abstract = {Triplex-Forming oligonucleotides (TFO) bind
sequence-specific to the DNA double helix in-vitro and
in-vivo andare a promising tool to manipulate genes or gene
regulatory elements. TFO as a carrier molecule for
short-rangeparticle emitter such as Auger-Electron-Emitters
(AEE) bear the potential to introduce radiation-induced
sitespecificcomplex DNA lesions, which are known to induce
chromosomal translocations. We studied gene
expression,translocation frequency and protein expression in
SCL-II cells after transfection with the AEE Iodine-125
(I-125) labeled TFO-BCL2 targeting the human BCL2 gene. The
TFO-BCL2 binds to the BCL2 gene in closeproximity to a known
major-breakage-region (mbr). SCL-II cells were transfected
with I-125 labeled TFO andstored for decay accumulation.
Monitoring of BCL2 translocations was done with the
Fluorescence-In-Situ-Hybridization (FISH) method. The
utilized FISH probes were designed to detect a t(14;18)
translocation of theBCL2 gene, which is a common
translocation leading to an overexpression of BCL2 protein.
Analysis of BCL2gene expression levels was done via
quantitative Real-Time PCR. Verification of gene expression
on the proteinlevel was analyzed by Western blotting. The
relative gene expression of BCL2 in I-125-TFO-BCL2
transfectedcells showed a significant up-regulation when
compared to controls. Analysis of the BCL2 t(14;18)
translocationfrequency revealed a significant 1.8- to 2-fold
increase when compared to control cells. This 2-fold
increase wasnot reflected on the protein level. We conclude
that I-125 decays within the BCL2 gene facilitate the
t(14;18)chromosomal translocation in the SCL-II cells and
that the increased frequency contributes to the
observedoverall enhanced BCL2 gene expression.},
cin = {S-US},
ddc = {570},
cid = {I:(DE-Juel1)S-US-20090406},
pnm = {899 - ohne Topic (POF3-899)},
pid = {G:(DE-HGF)POF3-899},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:28985947},
UT = {WOS:000413615100006},
doi = {10.1016/j.mrgentox.2017.09.002},
url = {https://juser.fz-juelich.de/record/837944},
}