血外体和含有的MiRNAs会影响多囊性卵巢综合征的生殖表型
Xiao Jiang1,2,3,4,5,6,7,8, Zhirong Zhang1,2,3,4,5,6,7, Min Hou1,2,3,4,5,6,7
1Center for Reproductive Medicine, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.
概括
患有多囊性卵巢综合征 (PCOS) 的女性的等离子外基因组扰乱了小鼠的雌性周期和卵巢功能. 这些外体内的外体微RNA (miRNAs),特别是miR-126-3p,会影响颗粒细胞的增殖和激素合成,为PCOS病理生理学提供新的见解.
科学领域:
- 生殖生物学 生殖生物学
- 内分泌学 在内分泌学.
- 细胞生物学 细胞生物学
背景情况:
- 无排卵是患有多囊性卵巢综合征 (PCOS) 的女性不孕症的主要原因.
- 血外体和外体微RNAs (miRNAs) 在PCOS相关的无排卵中的特定作用仍然不太清楚.
- 关于循环的细胞外囊泡如何导致PCOS病变的研究有限.
研究的目的:
- 在小鼠模型中研究PCOS患者血外体和外体miRNA对生殖参数的功能影响.
- 确定参与PCOS病理生理学的特定外体miRNA并阐明它们的细胞机制.
- 探索血外体组件作为PCOS生物标志物或治疗点的潜力.
主要方法:
- 从患有PCOS的妇女和健康对照组中分离了血外体.
- 在雌性ICR小鼠中静脉注射分离的外体,以评估对雌性雌性生殖周期,血清荷尔蒙和卵巢形态的影响.
- 用差异表达的外体miRNAs (miR-18a-3p,miR-20b-5p,miR-106a-5p,miR-126-3p,miR-146a-5p) 培养和转染KGN细胞,以评估类固醇生成,增殖和亡.
- 分析涉及PDGFRβ和PI3K-AKT信号级联的miR-126-3p调节通路.
主要成果:
- 注射PCOS等离子体外体的小鼠表现出被破坏的雌性周期 (寡环周期性) 和改变的卵巢形态.
- 来自PCOS患者的异位表达的外体miRNA显著影响了花菌细胞类固醇激素的合成和增殖.
- miR-126-3p表现出最明显的效果,通过向PDGFRβ和抑制PI3K-AKT通路来抑制颗粒细胞的增殖.
结论:
- 在PCOS患者中,等离子体外基因组及其含有的miRNA在扰乱雌性周期,荷尔蒙分泌和颗粒细胞功能方面发挥着至关重要的作用.
- 外体miR-126-3p被确定为PCOS的关键媒介,通过PDGFRβ/PI3K-AKT通路影响颗粒状细胞的增殖.
- 这项研究为血外体和外体miRNAs在多囊性卵巢综合征的发病过程中的功能提供了新的见解.
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