Differential gene expression in rainbow trout (Oncorhynchus mykiss) liver and ovary after exposure to zearalenone.
Zearalenone (ZEA) is a mycotoxin of worldwide occurrence, and it has been shown to produce numerous adverse effects in both laboratory and domestic animals. However, regardless of recent achievements, the molecular mechanisms underlying ZEA toxicity remain elusive, and little is known about transcriptome changes of fish cells in response to ZEA occurrence. In the present study, differential display PCR was used to generate a unique cDNA fingerprint of differentially expressed transcripts in the liver and ovary of juvenile rainbow trout after either 24, 72, or 168 h of intraperitoneal exposure to ZEA (10 mg/kg of body mass). From a total of 59 isolated cDNA bands (ESTs), 5 could be confirmed with Real-Time qPCR and their nucleotide sequences were identified as mRNAs of: acty (β-centractin), the cytoskeleton structural element; bccip, responsible for DNA repair and cell cycle control; enoa (α-enolase), encoding enzyme of the glycolysis process; proc (protein C), that takes part in the blood coagulation process; and frih, encoding the heavy chain of ferritin, the protein complex important for iron storage. Further qPCR analysis of the confirmed ESTs expression profiles revealed significant mRNA level alterations in both tissues of exposed fish during the 168 h study. The results revealed a complex network of genes associated with different biological processes that may be engaged in the cellular response to ZEA exposure, i.e. blood coagulation or iron-storage processes.
Department of Environmental Biotechnology, Faculty of Environmental Sciences, University of Warmia and Mazury in Olsztyn, ul. Słoneczna 45G, 10-709 Olsztyn, Poland. maciej.wozny@uwm.edu.pl
Maciej
M
Woźny
Paweł
P
Brzuzan
Lidia
L
Wolińska
Maciej
M
Góra
Michał K
MK
Łuczyński
D000199:Actins / Q000235:genetics / Q000378:metabolism; D000818:Animals; D003598:Cytoskeletal Proteins / Q000235:genetics / Q000378:metabolism; D016172:DNA Fingerprinting / Q000379:methods; D004781:Environmental Exposure / Q000009:adverse effects; D020224:Expressed Sequence Tags / Q000378:metabolism; D005260:Female; D005786:Gene Expression Regulation; D008099:Liver / Q000187:drug effects* / Q000378:metabolism; D017686:Oncorhynchus mykiss / Q000235:genetics* / Q000378:metabolism; D010053:Ovary / Q000187:drug effects* / Q000378:metabolism; D010751:Phosphopyruvate Hydratase / Q000235:genetics / Q000378:metabolism; D011486:Protein C / Q000235:genetics / Q000378:metabolism; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D060888:Real-Time Polymerase Chain Reaction / Q000379:methods; D018675:Toxicity Tests / Q000379:methods; D059467:Transcriptome; D015025:Zearalenone / Q000008:administration & dosage / Q000009:adverse effects*
D000199:Actins; D003598:Cytoskeletal Proteins; D011486:Protein C; D012333:RNA, Messenger; C076834:centractin; D015025:Zearalenone; D010751:Phosphopyruvate Hydratase