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人类胎盘中的全基因组DNA甲基化和基因表达来自辅助生殖技术
Pauliina Auvinen1, Jussi Vehviläinen1, Karita Rämö1
1Environmental Epigenetics Laboratory, Department of Medical and Clinical Genetics, Medicum, University of Helsinki, Helsinki, Finland.
Communications medicine
|December 20, 2024
概括
辅助生殖技术 (ART) 可能改变胎盘发育,影响胎儿生长和新陈代谢. 胎盘中的这些分子变化与ART程序和潜在的不孕不育有关,为不孕不育的分子基础提供了见解.
科学领域:
- 生殖生物学 生殖生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 发育生物学是发展生物学.
背景情况:
- 辅助生殖技术 (ART) 与不良妊娠结果有关,包括生长障碍和代谢障碍.
- 这些与ART相关的风险的分子基础仍然不清楚,关于其原因的模糊性ART程序或次生育.
- 研究胎盘的分子变化对于了解ART的长期影响至关重要.
研究的目的:
- 阐明ART相关的胎盘变化背后的分子机制.
- 要区分由ART手术引起的效应和源于潜在的低生育能力引起的效应.
- 为了确定在ART胎盘中受影响的特定分子通路和基因.
主要方法:
- 使用EPIC Illumina微阵列进行全基因组DNA甲基化分析.
- 在胎盘组织中进行基因表达概况的mRNA测序.
- 对来自ART的胎盘进行比较分析,对非生育夫妇的自然受孕和子宫内授精.
主要成果:
- 与ART相关的胎盘变化丰富了与荷尔蒙调节,胰岛素分泌,神经元发育和血管化相关的途径.
- 在ART胎盘中减少的筋细胞和下调的TRIM28和NOTCH3表达表明血管生成和生长受损.
- 观察到印记区域的DNA甲基化变化和改变的DLK1表达,将ART和次生育与印记缺陷联系起来.
结论:
- 对TRIM28,NOTCH3和DLK1的下调提供了与ART相关的表型特征的潜在分子解释.
- 与冷胚胎移植相比,新鲜胚胎移植与更明显的生长和代谢变化有关.
- 在ART胎盘中观察到的分子变化也与不孕不育有关,为不孕不育的分子基础提供了见解.
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