Molecular & Cellular Toxicology

, 7:271

Expression profiling of liver in Java medaka fish exposed to 17β-estradiol

Authors

  • Seonock Woo
    • South Sea Environment Research DepartmentKorea Ocean Research and Development Institute
  • Hye-Young Jeon
    • South Sea Environment Research DepartmentKorea Ocean Research and Development Institute
  • Taek-Kyun Lee
    • South Sea Environment Research DepartmentKorea Ocean Research and Development Institute
  • Seong-Ryul Kim
    • South Sea Environment Research DepartmentKorea Ocean Research and Development Institute
  • Seung-hoon Lee
    • Department of Biological ScienceYong In University
    • South Sea Environment Research DepartmentKorea Ocean Research and Development Institute
Original Paper

DOI: 10.1007/s13273-011-0033-x

Cite this article as:
Woo, S., Jeon, H., Lee, T. et al. Mol. Cell. Toxicol. (2011) 7: 271. doi:10.1007/s13273-011-0033-x

Abstract

Java medaka (Oryzias javanicus) cDNA array was constructed and the microarray platform was used to compare the hepatic expression profiles of Java medaka fish exposed to 17β-estradiol with those of unexposed controls. Data analysis demonstrated that the expression profiles were strongly affected by 17β-estradiol exposure, with 655 genes up- or downregulated after 24 h, and 633 genes after 48 h. The differentially expressed genes were analyzed to determine the effects of 17β-estradiol exposure on the liver tissue and were classified into five functional categories: information storage and processing, cellular processes and signaling, metabolism, general function prediction only, and function unknown. Genes whose expression was upregulated more than 10-fold were predominantly associated with energy production/conversion and reproduction, and 30% of the genes whose expression was downregulated more than 10-fold were associated with carbohydrate transport and metabolism. The observed differences in the expression profiles of 7 genes (encoding apolipoprotein B, cytochrome P450 1A, glucose-6-phosphate dehydrogenase, glutamate dehydrogenase 1b, vitellogenin, selenoprotein M, and transferrin) were confirmed by quantitative RT-PCR, and their transcriptional changes in the livers of Java medaka induced by exposure to 10, 100, and 1,000 μg/L 17β-estradiol were investigated. These results should allow the development of biomarkers for the identification of 17β-estradiol contamination in the environment and provide molecular biological information on the effects of endocrine-disrupting chemical exposure on marine animals.

Keywords

Oryzias javanicus Microarray 17β-estradiol Gene expression Gene ontology

Copyright information

© The Korean Society of Toxicogenomics and Toxicoproteomics and Springer Netherlands 2011