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衰老促进了人类子宫内膜上皮质中衰老和多细胞的积累
Marina Loid1,2, Darina Obukhova1,3,4, Keiu Kask1,2
1Department of Obstetrics and Gynecology, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia.
Human reproduction open
|August 26, 2024
概括
子宫内膜老化显著改变了晚产妇年龄 (AMA) 的女性的基因表达和细胞组成,影响了生育能力. 这些上皮细胞的变化可能会降低子宫内膜受容性,影响怀孕的结果.
科学领域:
- 生殖生物学和衰老研究.
- 基因组学和转录组学.
- 细胞衰老和组织重塑.
背景情况:
- 生殖衰老主要与卵巢衰退有关,但子宫内膜变化也起着至关重要的作用.
- 晚期孕产妇年龄 (AMA) 与试管婴儿植入和怀孕率的降低有关.
- 以前的分子研究表明,AMA女性子宫内膜的基因表达和突变发生改变.
研究的目的:
- 为了研究子宫内膜中与年龄相关的变化.
- 为了确定子宫内膜老化是否会影响生育能力和受容性.
- 为了比较年轻和高级母亲年龄组之间的子宫内膜转录组和细胞组成.
主要方法:
- 从年轻 (YMA) 和AMA妇女的子宫内膜样本中进行RNA测序 (RNA-seq) 和差异基因表达分析.
- 使用qPCR和免疫组织化学 (IHC) 的验证.
- 计算解卷以分析子宫内膜细胞组成.
主要成果:
- 来自AMA妇女的子宫内膜样本显示,与YMA妇女相比,接受性子宫内膜的比例较低.
- 鉴定出491个不同表达的年龄敏感基因,影响子宫内膜上皮的生长和受体.
- 观察到细胞衰老标记物 (例如,p16INK4a),新陈代谢,炎症和激素反应基因的变化.
- 发现子宫内膜衰老会影响多细胞的比例.
结论:
- 年轻的子宫内膜和AMA子宫内膜之间存在转录组和细胞组成的显著差异.
- 在AMA子宫内膜中的特定的上皮细胞变化可能会损害子宫内膜受体.
- 这些发现对改善晚期生育年龄妇女生育管理策略有意义.
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