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@ARTICLE{Sonnack:836989,
author = {Sonnack, Laura and Klawonn, Thorsten and Kriehuber, Ralf
and Hollert, Henner and Schäfers, Christoph and Fenske,
Martina},
title = {{C}oncentration dependent transcriptome responses of
zebrafish embryos after exposure to cadmium, cobalt and
copper},
journal = {Comparative biochemistry and physiology / D},
volume = {24},
issn = {1744-117X},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2017-06011},
pages = {29 - 40},
year = {2017},
abstract = {Environmental metals are known to cause harmful effects to
fish of which many molecular mechanisms still require
elucidation. Particularly concentration dependence of gene
expression effects is unclear. Focusing on this matter,
zebrafish embryo toxicity tests were used in combination
with transcriptomics. Embryos were exposed to three
concentrations of copper (CuSO4), cadmium (CdCl2) and cobalt
(CoSO4) from just after fertilization until the end of the
48hpf pre- and 96hpf post-hatch stage. The RNA was then
analyzed on Agilent's Zebrafish (V3, 4×44K) arrays.
Enrichment for GO terms of biological processes illustrated
for cadmium that most affected GO terms were represented in
all three concentrations, while for cobalt and copper most
GO terms were represented in the lowest test concentration
only. This suggested a different response to the
non-essential cadmium than cobalt and copper. In cobalt and
copper treated embryos, many developmental and cellular
processes as well as the Wnt and Notch signaling pathways,
were found significantly enriched. Also, different exposure
concentrations affected varied functional networks. In
contrast, the largest clusters of enriched GO terms for all
three concentrations of cadmium included responses to
cadmium ion, metal ion, xenobiotic stimulus, stress and
chemicals. However, concentration dependence of mRNA levels
was evident for several genes in all metal exposures. Some
of these genes may be indicative of the mechanisms of action
of the individual metals in zebrafish embryos. Real-time
quantitative RT-PCR (qRT-PCR) verified the microarray data
for mmp9, mt2, cldnb and nkx2.2a.},
cin = {S-US},
ddc = {540},
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:28806688},
UT = {WOS:000414815200004},
doi = {10.1016/j.cbd.2017.07.004},
url = {https://juser.fz-juelich.de/record/836989},
}