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Regulation of Female Reproductive Aging by the Spag17 Gene
Biorxiv : the Preprint Server for Biology
|March 17, 2025
Summary
The gene Spag17 plays a crucial role in female reproductive aging. Its loss in mice led to infertility, obstructed labor, and maternal death, highlighting its importance in maintaining reproductive health.
Area of Science:
- Reproductive biology
- Genetics
- Aging research
Background:
- Female reproductive aging involves decreased oocyte quality and uterine/cervical dysfunction, leading to infertility.
- Tissue homeostasis and fibrosis are critical factors in reproductive aging.
- The cilia-related gene Spag17's role in reproductive aging is unexplored.
Purpose of the Study:
- To investigate the contribution of Spag17 to female reproductive aging.
- To understand the molecular mechanisms underlying Spag17's function in the reproductive tract.
Main Methods:
- Expression analysis of Spag17 in the female reproductive tract across different ages.
- Phenotypic analysis of Spag17-deficient mice, including fertility, parturition, and maternal outcomes.
- Molecular analysis of aging-associated pathways in Spag17-deficient models.
Main Results:
- Spag17 expression declines with age in ovarian tissue but is high in the cervix during remodeling.
- Spag17 loss in mice caused impaired fertility, obstructed labor, and maternal death.
- Spag17 deficiency accelerated ovarian aging, increased fibrosis, and cervical stiffness, activating aging pathways.
Conclusions:
- Spag17 is a critical modulator of female reproductive aging.
- Loss of Spag17 disrupts reproductive function by promoting fibrosis and activating senescence signaling.
- Targeting Spag17 may offer therapeutic strategies for age-related reproductive decline.
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