Chinese Journal of Tissue Engineering Research ›› 2015, Vol. 19 ›› Issue (46): 7456-7460.doi: 10.3969/j.issn.2095-4344.2015.46.015

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Modified isolation and culture methods of human ovarian granulosa cells

Chen Dong-si, Qi Xiu-juan, Liu Jian-xin, Ding Yu, Ma Wen-cong   

  1. Department of Reproductive Medicine, the Affiliated Hospital of Qingdao University, Qingdao 266061, Shandong Province, China
  • Received:2015-08-25 Online:2015-11-12 Published:2015-11-12
  • Contact: Liu Jian-xin, M.D., Associate professor, Master’s supervisor, Department of Reproductive Medicine, the Affiliated Hospital of Qingdao University, Qingdao 266061, Shandong Province, China
  • About author:Chen Dong-si, Studying for master’s degree, Department of Reproductive Medicine, the Affiliated Hospital of Qingdao University, Qingdao 266061, Shandong Province, China
  • Supported by:

    the Scientific Development Plan of Qingdao, No. 1625

Abstract:

BACKGROUND: To build up an effective method of isolating and culturing granule cells is a pivotal step to enhance fertilization-embryo transfer rate. Current studies mainly focus on the isolation methods of human ovarian granulosa cells rather than cell counting, purity and subsequent growth.
OBJECTIVE: To establish the effective methods of isolating, purifying and culturing human ovarian granulosa cells in vitro.
METHODS: Follicular fluid was harvested from women undergoing fertilization-embryo transfer procedures. Human ovarian granulosa cells were obtained from the follicular fluid by lysis treatment, precipitation method or density gradient centrifugation. Granulosa cell mucus masses were digested with type I collagen enzyme or hyaluronidase and then cultured in the culture medium with or without autologous follicular fluid.
RESULTS AND CONCLUSION: Lysis treatment yielded the largest amount of granulosa cells compared to the precipitation method and density gradient centrifugation (P > 0.05, P < 0.05, respectively). Cells prepared by the three methods showed the same cell viability. After 24 hours of culture, the precipitation method obtained the largest amount of adherent granulosa cells (P < 0.05); and the density gradient centrifugation obtained the least 
amount of cells (P < 0.05). Compared with type I collagen enzyme, hyaluronidase took less time to digest the cells thoroughly. Autologous follicular fluid could promote the growth and survival of granulosa cells. These findings indicate that the precipitation method, though time-consuming, can obtain the highest cell viability and harvested the largest amount of granulosa cells after culture; hyaluronidase is more suitable for digesting granulosa cell mucus mass than type I collagen enzyme; autologous follicular fluid added into the culture medium is more conducive to granulosa cell growth.
中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Ovary, Cells, Cultured, Fertilization in Vitro