Chinese Science Bulletin

, Volume 47, Issue 12, pp 1011–1014 | Cite as

Expression and regulation of metalloproteinases-2, -9 and tissue inhibitors of metalloproteinases in rat corpus luteum

  • Xiaoguang Yu
  • Qinglei Li
  • Hongmei Wang
  • Wenxiang Luo
  • Longjiang Shao
  • Jiang Ni
  • Cheng Zhu


The expression and regulation of metalloproteinases-2, -9 (MMP-2, -9) and their tissue inhibitors TIMP-1,-2, -3 mRNA were studied in this experiment. In the PMSG-hCG primed pseudopregnant rat, MMP-2, -9 mRNA levels were the highest at Day 1, decreased from Day 4, and reached the minimal level at Day 8, then increased at Day 14; no significant changes were observed in TIMP-2 mRNA expression from Day 1 to Day 14; TIMP-3 mRNA expression was the lowest at Day 1, increased from Day 4, reached the maximal level at Day 8, and persisted to Day 14. TNF-α could significantly increase the expression of MMP-2, -9 and TIMP-1 mRNA in thein vitro perfused pseudopregnant CL, and decrease the expression of TIMP-3 mRNA, but had no effect on TIMP-2 mRNA expression. The results indicate that MMP-2, -9 and TIMP-1, -2, -3 might be involved in the regulation of CL function and maintenance of CL structure via their coordinated gene expression. TNF-a could inhibit luteal regression via increasing MMP-2, -9 and TIMP-1 mRNA in thein vitro perfused pseudopregnant ovary.


matrix metalloproteinases tissue inhibitors of metalloproteinases mRNA corpus luteum ovary perfusion 


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Copyright information

© Science in China Press 2002

Authors and Affiliations

  • Xiaoguang Yu
    • 1
    • 2
  • Qinglei Li
    • 1
  • Hongmei Wang
    • 1
  • Wenxiang Luo
    • 1
  • Longjiang Shao
    • 1
  • Jiang Ni
    • 2
  • Cheng Zhu
    • 1
  1. 1.State Key Laboratory of Reproductive Biology, Institute of ZoologyChinese Academy of SciencesBeijingChina
  2. 2.Laboratory of Reproductive EndocrinologyHarbin Medical UniversityHarbinChina

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