人类颗粒细胞的与年龄相关的整合性转录组定型揭示了与关键排卵动态相关的mRNA-microRNA调节网络†
Heather M Rogers1,2, Ahmed Gad2,3, Gentry K Cork1
1Colorado Center for Reproductive Medicine, Lone Tree, CO, USA.
Biology of reproduction
|February 21, 2025
概括
这项研究揭示了与卵巢衰老相关的颗粒细胞 (GCs) 中的分子特征. 衰老的GC显示炎症受损和血管生成失调,microRNA可能调节这些过程.
科学领域:
- 生殖生物学 生殖生物学
- 分子生物学分子生物学
- 基因组学就是基因组学.
背景情况:
- 先进的孕产妇年龄 (AMA) 与辅助生殖技术 (ART) 的成功率降低有关.
- 颗粒状细胞 (GCs) 的质量显著影响卵细胞健康和ART结果.
- 卵巢衰老会影响GC功能,影响生殖潜力.
研究的目的:
- 为了识别与卵巢衰老相关的GC中的分子特征.
- 为了比较年轻和AMA患者的GC的转录组.
- 探索差异表达基因 (DEGs) 和微RNA (DE miRNAs) 在卵巢衰老中的作用.
主要方法:
- RNA测序用于比较来自年轻 (<32岁) 和AMA (>38岁) 患者的GC的mRNA和miRNA转录组.
- 生物信息分析用于识别差异表达的基因和miRNAs.
- 途径分析和目标基因预测,以了解分子机制.
主要成果:
- 在年轻和年长的GC之间确定了293个DEG和21个DE小RNA.
- 老年GC中线粒体基因 (例如MT-ND3,MT-ND6) 的下调表明线粒体功能障碍.
- DEGs与炎症,细胞因子信号传递,ECM重塑和血管生成有关.
- 德微RNA可能调节参与细胞信号传递,线粒体功能,氧化应激,亡和衰老的基因.
结论:
- 与年轻的GC相比,老年GC表现出受损的促炎反应和失调的血管生成和ECM重塑.
- 微RNA可能在调节受卵巢衰老影响的关键排卵过程中发挥关键作用.
- 特定的miRNAs (例如,miR-483-3p,miR-1268a) 是老年GC中炎症,ECM和血管生成途径的潜在调节者.
- 需要进一步的实验验证,以证实已确定的监管关系及其生物学意义.
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