Journal of Integrative Agriculture ›› 2012, Vol. 12 ›› Issue (8): 1333-1339.DOI: 10.1016/S1671-2927(00)8663

• 论文 • 上一篇    下一篇

Expression of Interleukin-6 and Interleukin-6 Receptor in Ovine Oocytes During In vitro Maturation

 ZHAO Xi-an, CANG Ming, GAO Xiao-yu, YANG Mei-ling, YUAN Jian-long, ZHU Bing, WANG Zhi-gang   

  1. Key Laboratory of Ministry of Education of China for Mammal Reproduction Biology and Biotechnology, Inner Mongolia University,Hohhot 010021, P.R.China
  • 收稿日期:2011-05-20 出版日期:2012-08-01 发布日期:2012-09-09
  • 通讯作者: Correspondence LIU Dong-jun, Tel/Fax: +86-471-4995071, E-mail: nmliudongjun@sina.com; CANG Ming, E-mail:cangming1970@yahoo.com.cn
  • 作者简介:ZHAO Xi-an, E-mail:zxa_81@163.com;
  • 基金资助:

    The present study was supported by funding from the National 863 Program of China (2008AA1010070) and the Key Projects of the Natural Science Foundation of Inner Mongolia of China (20080404ZD08).

Expression of Interleukin-6 and Interleukin-6 Receptor in Ovine Oocytes During In vitro Maturation

 ZHAO Xi-an, CANG Ming, GAO Xiao-yu, YANG Mei-ling, YUAN Jian-long, ZHU Bing, WANG Zhi-gang   

  1. Key Laboratory of Ministry of Education of China for Mammal Reproduction Biology and Biotechnology, Inner Mongolia University,Hohhot 010021, P.R.China
  • Received:2011-05-20 Online:2012-08-01 Published:2012-09-09
  • Contact: Correspondence LIU Dong-jun, Tel/Fax: +86-471-4995071, E-mail: nmliudongjun@sina.com; CANG Ming, E-mail:cangming1970@yahoo.com.cn
  • About author:ZHAO Xi-an, E-mail:zxa_81@163.com;
  • Supported by:

    The present study was supported by funding from the National 863 Program of China (2008AA1010070) and the Key Projects of the Natural Science Foundation of Inner Mongolia of China (20080404ZD08).

摘要: To study the effects of interleukin-6 (IL-6) and its receptor (IL-6R) during in vitro maturation of ovine oocytes, the mRNA and protein expression levels of IL-6 and IL-6R, along with their localization, were examined during ovine oocytes maturation in vitro through real-time PCR, Western blotting, and immunohistochemistry. Specific patterns of expression of IL-6 and IL-6R were observed at both mRNA and protein levels at each stage of ovine oocytes maturation. IL-6 and IL-6R were distributed primarily on the surface of the cell membrane, with little expression in the cytoplasm or nucleus. IL-6 and IL- 6R were expressed significantly at higher levels in the maturation around 4 h, and then decreased dramatically. However the level slightly elevated at 20-24 h. The role of IL-6 and IL-6R on oocytes maturation was studied through in vitro addition of recombinant human IL-6 in different concentrations. The addition of 10 ng mL-1 IL-6 significantly increased the rates of oocytes maturation (P<0.05), but did not affect the rates of development of the subsequence IVF ovine embryos. In summary, IL-6 is likely to play an important role in the early ovine oocytes maturation. The expression patterns of the IL-6 and IL-6R on the ovine oocytes maturation open up the possibility of regulatory role of the cytokine in ovine oocytes maturation.

关键词: IL-6, oocyte, in vitro maturation, real time PCR, Western blotting

Abstract: To study the effects of interleukin-6 (IL-6) and its receptor (IL-6R) during in vitro maturation of ovine oocytes, the mRNA and protein expression levels of IL-6 and IL-6R, along with their localization, were examined during ovine oocytes maturation in vitro through real-time PCR, Western blotting, and immunohistochemistry. Specific patterns of expression of IL-6 and IL-6R were observed at both mRNA and protein levels at each stage of ovine oocytes maturation. IL-6 and IL-6R were distributed primarily on the surface of the cell membrane, with little expression in the cytoplasm or nucleus. IL-6 and IL- 6R were expressed significantly at higher levels in the maturation around 4 h, and then decreased dramatically. However the level slightly elevated at 20-24 h. The role of IL-6 and IL-6R on oocytes maturation was studied through in vitro addition of recombinant human IL-6 in different concentrations. The addition of 10 ng mL-1 IL-6 significantly increased the rates of oocytes maturation (P<0.05), but did not affect the rates of development of the subsequence IVF ovine embryos. In summary, IL-6 is likely to play an important role in the early ovine oocytes maturation. The expression patterns of the IL-6 and IL-6R on the ovine oocytes maturation open up the possibility of regulatory role of the cytokine in ovine oocytes maturation.

Key words: IL-6, oocyte, in vitro maturation, real time PCR, Western blotting