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Safety Assessment of Ovarian Cryopreservation and Transplantation in Nude Mice Bearing Human Epithelial Ovarian Cancer

  • Zhu, Gen-Hai (Department of Gynecology, Hainan Provincial People's Hospital) ;
  • Wang, Sheng-Tan (Department of Gynecology, Hainan Provincial People's Hospital) ;
  • Yang, Zhao-Xin (Drug Safety Evaluation Center, Hainan Medical College) ;
  • Cai, Jun-Hong (Research Center, Hainan Provincial People's Hospital) ;
  • Chen, Chun-Ying (Department of Gynecology, Hainan Provincial People's Hospital) ;
  • Yao, Mao-Zhong (Drug Safety Evaluation Center, Hainan Medical College) ;
  • Hong, Lan (Department of Gynecology, Hainan Provincial People's Hospital) ;
  • He, Guo-Li (Department of Gynecology, Hainan Provincial People's Hospital) ;
  • Yang, Shu-Ying (Department of Gynecology, Hainan Provincial People's Hospital)
  • Published : 2012.09.30

Abstract

Objective: Nude mice with orthotopic transplantation of human ovarian epithelial cancer were used to investigate screening criteria for paraneoplastic normal ovarian tissue and the security of the freezing and thawing for ovarian tissue transplantation. Methods: Expression of CK-7, CA125, P53, survivin, MMP-2/TIMP-2 in paraneoplastic normal ovarian tissues were detected by RT-PCR as well as immunohistochemistry. The tissues of the groups with all negative indicators of RT-PCR, all negative indicators of immunohistochemistry, negative expression of CK-7, CA125 and survivin, positive expression of CK-7, CA125 and survivin, cancer tissues and normal ovarian tissues of nude mice were used for freezing and thawing transplantation, to analyze overt and occult carcinogenesis rates after transplantation. Results: When all indicators or the main indicators, CK-7, CA125 and survivin, were negative, tumorigenesis did not occur after transplantation. In addition the occult carcinogenesis rate was lower than in the group with positive expression of CK-7, CA125 and survivin (P<0.01). After subcutaneous and orthotopic transplantation of ovarian tissues, rates did not change (P>0.05). There was no statistical significance among rates after transplantation of ovarian tissues which were obtained under different severity conditions (P>0.05). Conclusion: Negative expression of CK-7, CA125 and survivin can be treated as screening criteria for security of ovarian tissues for transplantation. Immunohistochemical methods can be used as the primary detection approach. Both subcutaneous and orthotopic transplantation are safe. The initial severity does not affect the carcinogenesis rate after tissue transplantation. Freezing and thawing ovarian tissue transplantation in nude mice with human epithelial ovarian carcinoma is feasible and safe.

Acknowledgement

Supported by : National Natural Science Foundation

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