Journal Article

FZJ-2018-00773

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Comparative analysis of the transcriptome responses of zebrafish embryos after exposure to low concentrations of cadmium, cobalt and copper

Sonnack, L. (Corresponding author) ; Klawonn, T. ; Kriehuber, R.FZJ* ; Hollert, H. ; Schäfers, C. ; Fenske, M. (Corresponding author)

2018
Elsevier New York, NY [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.cbd.2017.12.001

Abstract: Metal toxicity is a global environmental challenge. Fish are particularly prone to metal exposure, which can be lethal or cause sublethal physiological impairments. The objective ofthis study was to investigate how adverse effects of chronic exposure to non-toxic levels of essential and non-essential metals in early life stage zebrafish may be explained by changes inthe transcriptome. We therefore studied the effects of three different metals at low concentrations in zebrafish embryos by transcriptomics analysis. The study design comparedexposure effects caused by different metals at different developmental stages (pre-hatch and post-hatch). Wild-type embryos were exposed to solutions of low concentrations of copper(CuSO4), cadmium (CdCl2) and cobalt (CoSO4) until 96 h post-fertilization (hpf) and microarray experiments were carried out to determine transcriptome profiles at 48 and 96 hpf.We found that the toxic metal cadmium affected the expression of more genes at 96 hpf than 48 hpf. The opposite effect was observed for the essential metals cobalt and copper, whichalso showed enrichment of different GO terms. Genes involved in neuromast and motor neuron development were significantly enriched, agreeing with our previous results showingmotor neuron and neuromast damage in the embryos. Our data provide evidence that the response of the transcriptome of fish embryos to metal exposure differs for essential and nonessential metals.

Keyword(s): Biology (2nd)

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Contributing Institute(s):

1. Sicherheit und Strahlenschutz, Umgebungsüberwachung,Strahlenbiologie (S-US)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

Appears in the scientific report 2018

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Database coverage:
; BIOSIS Previews ; Current Contents - Life Sciences ; IF < 5 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection ; Zoological Record

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