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Basic fibroblast growth factor expression in isolated small human ovarian follicles
J H Quennell1, J-A L Stanton, P R Hurst
1Department of Anatomy and Structural Biology, School of Medical Sciences, University of Otago, P.O.Box 56, Dunedin, 9001, New Zealand.
Molecular Human Reproduction
|July 10, 2004
Summary
Basic fibroblast growth factor (bFGF) is expressed in the human ovary. Its mRNA levels decrease as ovarian follicles grow, suggesting a role in early follicle development.
Area of Science:
- Reproductive Biology
- Molecular Endocrinology
- Ovarian Physiology
Background:
- Basic fibroblast growth factor (bFGF) is a key regulator of cell proliferation, differentiation, and angiogenesis.
- bFGF is a known mitogen for mammalian granulosa cells in vitro.
- The role of bFGF in human follicle development in vivo remains largely uncharacterized.
Purpose of the Study:
- To investigate the expression of bFGF during human follicle initiation and growth in vivo.
- To determine the relationship between bFGF mRNA levels and early follicle development stages.
Main Methods:
- Nested RT-PCR was employed on ovarian cortical biopsies to detect bFGF expression.
- Laser capture microdissection isolated distinct human follicle populations (non-growing, primary, small secondary).
- Quantitative PCR (TaqMan real-time PCR with 18S rRNA as control) measured bFGF mRNA levels.
Main Results:
- bFGF mRNA expression was confirmed in the human adult ovarian cortex.
- A significant down-regulation of bFGF mRNA was observed as follicles progressed from primary to small secondary stages.
- Follicle morphology correlated with observed bFGF expression patterns.
Conclusions:
- This study provides evidence for bFGF expression in the human ovary.
- bFGF mRNA levels are dynamically regulated during early human follicle development.
- The findings suggest a potential role for bFGF in regulating follicle initiation and growth.