CXADR-like membrane protein (CLMP) in the rat ovary: Stimulation by human chorionic gonadotrophin during the periovulatory period

Feixue Li, Xiaoping Miao, Yonglong Chen, Thomas E. Curry

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

CXADR-like membrane protein (CLMP) is a novel cell-cell adhesion molecule. The present study investigated the spatiotemporal expression pattern of CLMP and its regulation in the rat ovary during the periovulatory period. Real-time polymerase chain reaction analysis revealed that Clmp mRNA was rapidly stimulated in intact ovaries by 4h after human chorionic gonadotrophin (hCG) treatment. In situ hybridisation analysis demonstrated that Clmp mRNA expression was stimulated in theca cells at 4h after hCG and remained elevated until 12h. Clmp mRNA was also upregulated in granulosa cells and was present in forming corpora lutea. Our data indicate that the protein kinase A but not the protein kinase C pathway regulates the expression of Clmp mRNA in granulosa cells. Phosphatidylinositol 3 kinase and p38 kinase are also involved in regulating Clmp mRNA expression. The stimulation of Clmp mRNA by hCG requires new protein synthesis. Furthermore, inhibition of epidermal growth factor receptor activation significantly inhibited Clmp mRNA expression, whereas inhibition of prostaglandin synthesis or progesterone action had no effect. The stimulation of CLMP in the rat ovary may be important in cell adhesion events during ovulation and luteal formation such as maintaining the structure and communication of ovarian follicular and luteal cells.

Original languageEnglish
Pages (from-to)742-749
Number of pages8
JournalReproduction, Fertility and Development
Volume28
Issue number6
DOIs
StatePublished - 2016

Bibliographical note

Funding Information:
The present study was supported by the National Natural Science Foundation of China (31100845 to F. L.) and National Institutes of Health (R01HD057446 to T. E. C.).

Publisher Copyright:
© CSIRO 2016.

Keywords

  • adhesion molecule
  • corpus luteum
  • ovary
  • ovulation.

ASJC Scopus subject areas

  • Biotechnology
  • Reproductive Medicine
  • Animal Science and Zoology
  • Molecular Biology
  • Genetics
  • Endocrinology
  • Developmental Biology

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