Chinese Science Bulletin

, Volume 49, Issue 11, pp 1142–1145 | Cite as

Regulation of mouse blastocyst adhesion, outgrowth and secretion of matrix metalloproteinase-2 by cGMP and nitric oxide in vitro

  • Zheng Shen
  • Xingxu Zhao
  • Yujing Cao
  • Shumin Bu
  • Weimin Liu
  • Enkui Duan
Articles

Abstract

Nitric oxide (NO) is a multifunctional messenger molecule produced through oxidation of L-arginine to L-citrulline by enzyme NO synthase (NOS). In the current study, mouse blastocysts were cultured in the different media, and the implantation capacity of blastocyst was evaluated by evaluating the percentage of embryos adhesion and outgrowth after culture for 12, 24 or 48 h. Matrix metalloproteinase-2 (MMP-2) mRNA was detected by RT-PCR, and MMP-2 protein was detected by gelatin zymography. Inhibition of blastocyst adhesion and outgrowth was observed in embryo cultured with 500 μmol/L NOS inhibitor NG-monomethyl-L-arginine (L-NMMA) alone; however, 100 μmol/L S-nitroso-N-acetylpenicillamine (SNAP), a NO donor, and 20 μmol/L cGMP analogue, 8-Br-cGMP could block this inhibition. The expression and production of MMP-2 in the blastocysts were suppressed by L-NMMA, and SNAP or 8-br-cGMP could reverse this suppression. These results suggest that NO induces embryo implantation by cGMP signaling pathway.

Keywords

nitric oxide cyclic guanosine monophoshate adhesion outgrowth implantation matrix metalloproteinase-2 

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Copyright information

© Science in China Press 2004

Authors and Affiliations

  • Zheng Shen
    • 1
    • 2
  • Xingxu Zhao
    • 1
  • Yujing Cao
    • 2
  • Shumin Bu
    • 2
  • Weimin Liu
    • 2
  • Enkui Duan
    • 2
  1. 1.College of Veterinary MedicineGansu Agricultural UniversityLanzhouChina
  2. 2.State Key Laboratory of Reproductive Biology, Institute of ZoologyChinese Academy of SciencesBeijingChina

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