Ornithine Decarboxylase Mechanisms in Reproductive Biology
Summary
Ornithine decarboxylase (ODC) is the rate-limiting enzyme in the biosynthesis of polyamines, small polycationic molecules that include putrescine, spermidine and spermine. In reproductive tissues, polyamines regulate cell proliferation, differentiation and steroidogenesis, thereby influencing folliculogenesis, gametogenesis and early embryonic development. ODC expression is dynamically modulated by hormonal cues—including gonadotrophins and sex steroids—and by nutrient availability, integrating metabolic status with reproductive competence. A tightly controlled feedback circuit involving antizyme proteins ensures that polyamine levels remain within physiological bounds, preventing cellular stress or apoptosis. In the ovary, ODC activity supports granulosa cell growth and hormone output, while in the testis it contributes to spermatogonial proliferation and sperm maturation. Alterations in ODC-driven polyamine metabolism have been implicated in ovarian ageing, diminished ovarian reserve and subfertility, as well as in placental function and foetal development. Emerging evidence suggests that targeted modulation of ODC or its regulatory partners may offer therapeutic avenues for reproductive disorders, underscoring the global importance of this enzyme in fertility and reproductive health.
Research from Nature Portfolio
No recent Nature Portfolio content available.
Ornithine Decarboxylase Mechanisms in Reproductive Biology publication trend
The graph below shows the total number of articles in ornithine decarboxylase mechanisms in reproductive biology across all publications each year (not limited to Nature Index journals).
Technical terms
Ornithine Decarboxylase (ODC): A pyridoxal-phosphate-dependent enzyme that converts ornithine to putrescine, initiating polyamine biosynthesis and serving as a key control point in cellular growth and differentiation.
Polyamines: Small organic cations—primarily putrescine, spermidine and spermine—that stabilise nucleic acids, regulate ion channels and modulate signalling pathways essential for cell proliferation and function.
Antizyme: A regulatory protein induced by elevated polyamine levels that binds to ODC, inhibiting its activity and targeting it for proteasomal degradation to maintain polyamine homeostasis.
Granulosa cells: Somatic cells within ovarian follicles that support oocyte maturation, produce steroid hormones and respond to gonadotrophins to regulate follicular development.
References
- Polyamines in Ovarian Aging and Disease. International Journal of Molecular Sciences (2023).
- Effects of ODC on polyamine metabolism, hormone levels, cell proliferation and apoptosis in goose ovarian granulosa cells. Poultry Science (2021).
- OAZ1 knockdown enhances viability and inhibits ER and LHR transcriptions of granulosa cells in geese. PLOS ONE (2017).
Turn complex research questions into confident strategic decisions
When you're under pressure to set direction, justify investment, or understand your competitive position, you need more than raw data — you need trusted insights you can act on.
Benchmark your performance against global peers using robust, methodologically sound analysis.
Combine quantitative metrics with qualitative expert insight to uncover strengths, gaps and emerging opportunities.
Gain tailored, decision-ready recommendations aligned to your strategic priorities.
Talk to us to learn more about our data dashboards and bespoke strategy reports.
Grow research skills, confidence and careers with training built for every stage of the research lifecycle.
Developed with Nature Portfolio journal Editors and internationally renowned experts. Discover three ways to learn:
Self-paced, online courses in convenient bite-sized units, covering key skills across scientific writing, publishing, grant writing, data analysis, and more.
Expert trainer-led workshops with hands-on exercises and real-time feedback across core research skills, delivered via interactive group sessions.
Editor-led workshops combining core principles in writing and publishing, personalised 1:1 feedback from Nature Portfolio Editors and hands-on exercises.
Explore course catalogues and workshop agendas, enquire about the options or request institutional pricing.