Journal of Embryo Transfer (한국수정란이식학회지)

The Korean Society of Embryo Transfer (한국수정란이식학회)
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Upregulation of Glutathion S-Transferase mu 1 in Bovine Cystic Follicles

  • Kang, Da-Won (Department of Physiology, Institute of Health Sciences, Gyeongsang National University School of Medicine) ;
  • Kim, Chang-Woon (Department of Physiology, Institute of Health Sciences, Gyeongsang National University School of Medicine) ;
  • Han, Jae-Hee (Department of Physiology, Institute of Health Sciences, Gyeongsang National University School of Medicine)
  • Received : 2010.11.09
  • Accepted : 2010.11.30
  • Published : 2010.12.31
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Abstract

Follicular cystic follicles (FCFs) show delayed regression with persistent follicle growth. However, the mechanism by which follicles are persistently grown remains unclear. Glutathione S-transferases (GSTs) are drug-metabolizing and detoxification enzymes that are involved in the intracellular transport and metabolism of steroid hormones. In this study, a proteomic analysis was performed to identify whether GST expression is changed in bovine FCFs and to predict the interactions between GST and other proteins. Normal follicles and FCFs were classified based on their sizes (5 to 10 mm and 25 mm). In bovine follicles, GST mu 1 (GSTM1) was detected as a differentially expressed protein (DEP) and significantly up-regulated in FCFs compared to normal follicles (p<0.05). Consistent with the proteomic results, semi-quantitative PCR data and western blot analysis revealed an up-regulation of GSTM1 in FCFs. Expression levels of aromatase and dehydrogenase proteins were changed in FCFs. These results show that the up-regulation of GSTM1 that is observed in bovine FCFs is likely to be responsible for the persistent follicle growth in FCFs as the activity of aromatase and the dehydrogenases.

Keywords

References

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