年龄和体力活动调节含在人卵泡液细胞外囊泡中的miRNAs
Maria Soares1,2, Carmen Almiñana3,4, Ana Filipa Ferreira5,6,7
1University of Coimbra, Institute for Interdisciplinary Research, Doctoral Program in Experimental Biology and Biomedicine (PDBEB), Coimbra, Portugal.
概括
衰老和体力活动会改变毛囊液内的细胞外囊泡中的microRNA载荷. 这些变化可能会影响女性的生育能力和卵细胞能力.
科学领域:
- 生殖生物学 生殖生物学
- 细胞外囊泡中的细胞外囊泡.
- 微RNA生物学 微RNA生物学
背景情况:
- 晚年母亲的年龄通过减少卵细胞的质量和数量,对女性的生育能力产生负面影响.
- 卵细胞能力依赖于卵泡内的细胞间通信,特别是通过卵泡液中携带微RNA (miRNA) 的细胞外囊泡 (EVs).
- 系统性条件可以改变EV分泌和载荷,这表明生理状态和卵泡内通信之间存在联系.
研究的目的:
- 研究衰老和体力活动对人类毛囊液和血中EVs的miRNA载荷的影响.
- 为了确定可能影响女性生育能力的根据年龄和身体活动调节的特定miRNAs.
主要方法:
- 从年轻和先进的孕产妇年龄组以及中等或高体力活动组的妇女收集卵泡液和血.
- 使用尺寸排除染色法分离EV,通过特定标记和形态确认其身份.
- 进行小型非编码RNA测序以分析miRNA货物,然后进行定量PCR (qPCR) 验证.
主要成果:
- 在EVs中,衰老与两个特定的miRNA (miR-486-5p和miR-451a) 的显著改变有关.
- 身体活动水平在五种miRNA中显示出显著的差异,包括miR-143-3p,在EVs内.
- 验证了与年龄和活动相关的miRNA,揭示了它们在生殖途径,寿命和衰老中的作用.
结论:
- 年龄和身体活动差异地调节毛囊液中EVs的miRNA载荷.
- 这些miRNA变化可能会影响卵细胞的能力,并导致与年龄相关的女性不孕症.
- 该研究强调,电动汽车是生殖健康的关键媒介,受生活方式和衰老的影响.
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