阴道上皮质雌激素受体α在小鼠中协调糖原沉积,微生物稳定性和pH调节
Srinivasan Mahalingam1, Erin M Carulli1, Jiude Mao1
1Department of Obstetrics, Gynecology and Women's Health, School of Medicine, Columbia, MO 65211 USA.
bioRxiv : the preprint server for biology
|November 24, 2025
概括
皮质雌激素受体α (ESR1) 对于维持阴道平衡至关重要. 它的缺失会破坏糖原,pH和微生物平衡,反映了绝经后的变化,并暗示了治疗目标.
科学领域:
- 生殖生物学 生殖生物学
- 微生物组研究 微生物组研究
- 内分泌学 在内分泌学.
背景情况:
- 雌激素对阴道健康至关重要,但上皮雌激素受体α (ESR1) 在微生物和生化平衡中的作用尚不清楚.
- 之前的研究证实了表皮ESR1对雌激素驱动的表皮扩散,角化和MUC1表达的重要性.
研究的目的:
- 研究表皮ESR1在调节阴道糖原沉积,pH和微生物稳定的特定作用.
- 为了确定小鼠上皮上ESR1缺乏是否重现了绝经后阴道失调症的特征.
主要方法:
- 雌激素受体α (Esr1) 基因在小鼠阴道上皮细胞 (上皮Esr1淘汰赛小鼠) 中的条件删除.
- 分析阴道糖原水平,光道pH值和微生物组成 (16SrRNA测序).
- 皮质Esr1淘汰赛小鼠与对照 littermates 的比较.
主要成果:
- 与对照组相比,表皮Esr1淘汰赛小鼠表现出减少的阴道糖原和增加的光pH值.
- 观察到阴道微生物组合的显著变化,Comonadaceae的增加和Lactobacillus物种的减少.
- 两组之间检测到的阴道微生物群的α多样性没有显著差异.
结论:
- 表皮ESR1是阴道平衡的关键调节者,影响表皮代谢,屏障功能和宿主微生物相互作用.
- 在淘汰赛小鼠中观察到的变化模仿了绝经后的阴道失调,突出了雌激素信号传递的作用.
- 向上皮质雌激素信号传递为更年期的生殖尿综合征提供了潜在的治疗策略.
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