Effect of estrogen on expression of prohibitin in white adipose tissue and liver of diet-induced obese rats

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• 作者：Minji Choi ; Harmesh N. Chaudhari ; Young Rae Ji…
• 关键词：Adipose tissue ; Estrogen receptor ; Obesity ; Prohibitin ; Sex hormone
• 刊名：Molecular and Cellular Biochemistry
• 出版年：2015
• 出版时间：September 2015
• 年：2015
• 卷：407
• 期：1-2
• 页码：181-196
• 全文大小：5,268 KB
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• 作者单位：Minji Choi (1)
  Harmesh N. Chaudhari (1)
  Young Rae Ji (2)
  Zae Young Ryoo (2)
  Sang Woo Kim (1)
  Jong Won Yun (1)
  
  1. Department of Biotechnology, Daegu University, Kyungsan, Kyungbuk, 712-714, Republic of Korea
  2. School of Life Science and Biotechnology, Kyungpook National University, Daegu, 702-701, Republic of Korea
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Biochemistry
  Medical Biochemistry
  Oncology
  Cardiology
  
• 出版者：Springer Netherlands
• ISSN：1573-4919

文摘

Prohibitin (PHB) is a ubiquitously expressed and highly conserved protein that participates in diverse cellular processes, and its functions are linked to a variety of diseases. In the present study, to explore transcriptional activation and signaling pathways involved in PHB regulation in response to sex hormone treatment, we investigated the effects of estrogen (17-β-estradiol, E2) on regulation of PHB in several metabolic tissues from male and female rats. Elevated expression of PHB was prominent in white adipose tissue (WAT) and the liver, and E2 stimulated PHB expression in both ND and HFD-fed rats. To further confirm the expression of PHB which was increased in WAT and the liver, we analyzed PHB expression levels in 3T3-L1 and C9 cells after the treatment of E2. Transcription and protein levels of PHB were dose-dependently increased by E2 treatment in both cell types, supporting our in vivo data. To further evaluate the possible role of E2 in elevation of PHB via estrogen receptors (ER), the potent ER inhibitor fulvestrant was treated to 3T3-L1 and C9 cells. Fulvestrant markedly suppressed both transcription and protein levels of PHB, suggesting that PHB expression in both tissues may be regulated through ERs. GeneMANIA, a predictive web interface, was used to show that Phb is regulated via the intracellular steroid hormone receptor signaling pathway, suggesting a role for ERs in expression of Phb as well as other metabolically important genes. Based on these results, we expect that targeting PHB would be a useful therapeutic approach for treatment of obesity.