Korean J Fertil Steril Search


Korean Journal of Fertility and Sterility 2005;32(3):269-278.
Published online September 1, 2005.
Characterization of Genes Related to the Cell Size Growth and CCN Family According to the Early Folliculogenesis in the Mouse.
Kyeoung Hwa Kim, Chang Eun Park, Se Jin Yoon, Kyung Ah Lee
1Graduate School of Life Science and Biotechnology, Korea.
2Pochon CHA University College of Medicine 1Infertility Medical Center, CHA General Hospital, Korea.
OBJECTIVES: Previously, we sought to compile a list of genes expressed during early folliculogenesis by using cDNA microarray to investigate follicular gene expression and changes during primordialprimary follicle transition and development of secondary follicles (Yoon et al., 2005). Among those genes, a group of genes related to the cell size growth was characterized during the ovarian development in the present study. METHODS: We determined ovarian expression pattern of six genes related to the cell size growth (cyr61, emp1, fhl1, socs2, wig1 and wisp1) and extended into CCN family (connective tissue growth factor/cysteine-rich 61/nephroblastoma-overexpressed), ctgf, nov, wisp2, wisp3, including cyr61 and wisp1 genes. Expression of mRNA and protein according to the ovarian developmental stage was evaluated by in situ hybridization, and/or semiquantitative reverse transcriptase polymerase chain reaction (RT-PCR), and immunohistochemistry, respectively. RESULTS: Among 6 genes related to the cell size growth, cyr61 and wisp1 mRNA was detected only in oocytes in the postnatal day5 mouse ovaries. cyr61 mRNA expression was limited to the nucleolus of oocytes, while wisp1 was expressed in the cytoplasm and nucleolus of oocytes, except nucleus. cyr61 mRNA expression, however, was found in granulosa cells from secondary follicles. The rest 4 genes in the cell size growth group were detected in oocytes, granulosa and theca cells. Cyr61 and Wisp1 proteins were expressed in the oocyte cytoplasm from primordial follicle stage. Especially, Cyr61 protein was detected in pre-granulosa cells, Wisp1 protein was not. By using RT-PCR, we evaluated and decided that Cyr61 protein is produced by their own mRNA in pre-granulosa cells that was not detected by in situ hybridization. cyr61 and wisp1 genes are happen to be the CCN family members. The other members of CCN family were also studied, but their expression was detected in oocytes, granulose and theca cells. CONCLUSIONS: We firstly characterized the ovarian expression of genes related to the cell size growth and CCN family according to the early folliculogenesis. Cyr61 protein expression in the pre-granulosa cells is profound in meaning. Further functional analysis for cyr61 in early folliculogenesis is under investigation.
Key Words: Early folliculogenesis; Cell size growth; cyr61; wisp1; CCN family
Share :
Facebook Twitter Linked In Google+ Line it
METRICS Graph View
  • 848 View
  • 1 Download
Related articles in Clin Exp Reprod Med

mRNA Expression of the Regulatory Factors for the Early Folliculogenesis in vitro.2005 September;32(3)


Browse all articles >

Editorial Office
Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital
82 Gumi-ro 173, Bundang-gu, Seongnam 13620, Korea
Tel: +82-31-787-7254    CP: +82-10-9072-3154    E-mail: blasto@snubh.org                

Copyright © 2024 by Korean Society for Reproductive Medicine.

Developed in M2PI

Close layer
prev next