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通过调节FoxO3表达,FXR维持了原始卵泡的休眠状态

Ikuo Tomioka¹, Asuka Komoshita¹, Koichi Watanabe¹

¹Faculty of Agriculture, Shinshu University. 8304 Minami-Minowa, Kami-Ina, Nagano 399-4598, Japan.

Reproduction (Cambridge, England)

|March 12, 2026

概括

法尔内索伊德X受体 (FXR) 调节卵巢储备. FXR淘汰赛小鼠显示卵泡激活加速,这表明FXR通过控制卵泡休眠来维持女性生育能力.

科学领域:

生殖生物学生殖生物学
内分泌学在内分泌学.
分子遗传学分子遗传学

背景情况:

核受体Farnesoid X受体 (FXR) 在卵巢中发现,但其生殖作用尚不清楚.
卵巢储备对于女性生育至关重要,通过调节原始卵泡激活和休眠状态来维持.

研究的目的:

调查FXR在调节卵巢储备维持中的作用.
阐明FXR影响原始卵泡激活的分子机制.

主要方法:

使用了一种新的FXR淘汰赛 (FXR-KO) 鼠标模型.
在新生儿卵巢中分析了卵巢卵泡池和原始卵泡激活标记物 (例如FOXO3).
通过分子技术研究了FXR与FoxO3促进体的直接结合.
在实验室中使用用FXR激应剂治疗的花粉状细胞进行了实验.

主要成果:

FXR-KO小鼠显示卵细胞排卵的增加和一个更大的二次毛囊池,表明增强的原始毛囊招募.
新生儿FXR-KO卵巢显示原卵泡激活加速,与增加的叉头盒O3 (FOXO3) 核排斥有关.
在野生型卵巢中,FXR激活抑制了原始卵泡激活;FXR直接在转录上调节了FoxO3的表达.
在体外,花质细胞中的FXR激活增加了细胞循环抑制剂和减少了增殖,这表明它在维持毛囊休眠中发挥了作用.

结论:

FXR被确定为维持卵巢储备的新型调节剂.
FXR抑制了颗粒状细胞的分化,并促进了卵细胞的静止,从而保持了原始卵泡的休眠状态.
FXR代表了调节生殖寿命和生育管理的潜在药理目标.

关键词:

细胞周期控制细胞周期控制毛囊毛囊是一种毛囊.基因调节基因调节颗粒素细胞是颗粒素的细胞.卵巢卵巢卵巢

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