An Antisense Oligodeoxynucleotide to the LH Receptor Attenuates FSH-induced Oocyte Maturation in Mice

  • Yang, Jiange (State Key Laboratory of Agrobiotechnology, College of Biological Sciences China Agricultural University) ;
  • Fu, Maoyong (State Key Laboratory of Agrobiotechnology, College of Biological Sciences China Agricultural University) ;
  • Wang, Songbo (State Key Laboratory of Agrobiotechnology, College of Biological Sciences China Agricultural University) ;
  • Chen, Xiufen (State Key Laboratory of Agrobiotechnology, College of Biological Sciences China Agricultural University) ;
  • Ning, Gang (State Key Laboratory of Agrobiotechnology, College of Biological Sciences China Agricultural University) ;
  • Xu, Baoshan (State Key Laboratory of Agrobiotechnology, College of Biological Sciences China Agricultural University) ;
  • Ma, Yuzhen (State Key Laboratory of Agrobiotechnology, College of Biological Sciences China Agricultural University) ;
  • Zhang, Meijia (State Key Laboratory of Agrobiotechnology, College of Biological Sciences China Agricultural University) ;
  • Xia, Guoliang (State Key Laboratory of Agrobiotechnology, College of Biological Sciences China Agricultural University)
  • Received : 2007.09.19
  • Accepted : 2008.02.04
  • Published : 2008.07.01


It has been recently shown that expression of the LH receptor (LHR) in cumulus cells is related with FSH-induced meiotic resumption of mouse cumulus enclosed oocytes (CEOs). However, to date, it is still unclear whether LHR expression in cumulus cells plays a key role during FSH-induced oocyte maturation. The purpose of this study was to characterize the functional role of LHRs in cumulus cells. CEOs were isolated from eCG-primed preovulatory follicles and cultured in hypoxanthine (HX) arrested medium. LHR protein expression in cumulus cells was time-dependent increasing during the process of FSH-induced oocyte maturation. While the sense oligodeoxynucleotide (ODN) had no effect, antisense ODN inhibited FSH-induced LHR expression and meiotic resumption. Moreover, this antisense ODN against LHR could inhibit FSH-induced mitogen-activated protein kinase (MAPK) phosphorylation. This study suggested that LHR expression in cumulus cells is involved in FSH-induced oocyte meiotic resumption, which process is possibly regulated by MAPK cascade.


Supported by : National Natural Science Foundation of China


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