Chinese Journal of Tissue Engineering Research ›› 2015, Vol. 19 ›› Issue (1): 78-84.doi: 10.3969/j.issn.2095-4344.2015.01.014

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Granulosa cells with stem cell properties in the rat ovary

Liu Hui-ping, Lin Zheng-hua, Zhang Guo-min, Yu Rong, Liu Wen-e, Li Ling, Gu Xu-yu   

  1. Prescription and Syndrome Research and Translational Medicine Laboratory of Hunan University of Traditional Chinese Medicine, Changsha 410208, Hunan Province, China
  • Revised:2014-12-07 Online:2015-01-01 Published:2015-01-01
  • Contact: Zhang Guo-min, M.D., Associate professor, Master’s supervisor, Prescription and Syndrome Research and Translational Medicine Laboratory of Hunan University of Traditional Chinese Medicine, Changsha 410208, Hunan Province, China
  • About author:Liu Hui-ping, M.D., Associate professor, Prescription and Syndrome Research and Translational Medicine Laboratory of Hunan University of Traditional Chinese Medicine, Changsha 410208, Hunan Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81303123; China Postdoctoral Science Foundation, No. 2013T60770, 2012M511382; Specialized Research Fund for the Doctoral Program of Higher Education, No. 20114323120007; the Hunan Provincial Key Laboratory Foundation, No. 2014XNFZ06

Abstract:

BACKGROUND: Human and rat ovarian granulosa cells in dominant follicles have the phenomenon of expressing stem cell characteristics.
OBJECTIVE: To investigate the expression of stem cell-related factors in rat ovarian granulosa cells.
METHODS: After the paraffin sections of rat ovarian tissue, immunohistochemical method was used to detect CD34, CD133, ABCG2/Bcrp1, Pou5f1/Oct-4 expressions. Granulosa cells cultured in vitro were harvested by follicular puncture method, and then the immunohistochemical method was used to detect the expression of FSHR receptor in order to identify the purity of granule cells. In the cultured granulosa cells, CD44 and C-Kit expressions were detected immunohistochemically, RT-PCR was used to detect ABCG2/Bcrp1, Pou5f1/Oct-4, Nanog gene expressions in ovarian tissue and granulosa cells.
RESULTS AND CONCLUSION: Immunohistochemistry detection on paraffin sections showed that a part of ovarian granulosa cells expressed CD34, CD133, ABCG2/Bcrp1 and Pou5f1/Oct-4, and the expression of Pou5f1/Oct-4 protein gradually increased in the development of ovarian follicles, significantly enhanced during the luteal phase, and then disappeared after the formation of corpus albicans, displaying a periodic expression characteristics. FSHR receptor positive identification rate of primary cells harvested by the folliclar puncture method was more than 95%. Granulosa cells cultured in vitro were mainly long spindle-shaped or diamond, and some cells presented with aggregation growth and expressed CD44 and C-Kit. RT-PCR test results showed that there were no Nanog in the ovarian tissue and cultured granulosa cells, low expression of Pou5f1/Oct-4 in the ovarian tissue, strong expression of ABCG2/Bcrp1 in the ovarian tissue, weak expression of Pou5f1/Oct-4 in the cultured granulosa cells, and strong expression of ABCG2/Bcrp1 in the cultured granulosa cells. These findings suggest that a part of granulosa cells in the rat ovarian have the characteristics of stem cells.


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程


全文链接:

Key words: Stem Cells, Ovary, Granulosa Cells

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