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在整个妊娠期内在无细胞DNA中进行 (胎盘) DNA 甲基化分析:鹿特丹经受孕队列
Marjolein M van Vliet1,2, Ruben G Boers2, Joachim B Boers2
1Department of Obstetrics and Gynecology, Erasmus MC, Rotterdam, The Netherlands.
Molecular human reproduction
|May 8, 2025
概括
这项研究表明,母亲的无细胞DNA (cfDNA) 可以在整个怀孕期间非侵入性地跟踪胎盘DNA甲基化变化. 研究人员在cfDNA中确定了特定的妊娠年龄相关的胎盘DNA甲基化标记,为监测妊娠健康提供了一个新的工具.
科学领域:
- 生殖生物学 生殖生物学
- 遗传学 是一个遗传学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 胎盘DNA甲基化模式在妊娠期间发生变化,并与妊娠并发症有关.
- 母胎血细胞自由DNA (cfDNA) 为胎盘表观遗传学提供了一个非侵入性窗口,但研究有限.
- 在怀孕期间分析cfDNA甲基化存在技术挑战.
研究的目的:
- 通过使用甲基化DNA测序 (MeD-seq) 在整个妊娠期内研究母体cfDNA和胎盘组织中的DNA甲基化.
- 探索整个妊娠期间母亲cfDNA中甲基化差异的起源.
- 直接在cfDNA中识别与妊娠年龄相关的胎盘DNA甲基化标记.
主要方法:
- 在所有三个月和出生时对母体cfDNA的纵向采集.
- 通过激光捕获微解剖分离胎盘和母细胞类型.
- 应用MeD-seq技术来分析cfDNA和组织样本中的DNA甲基化.
主要成果:
- 在怀孕和非怀孕妇女之间的cfDNA中发现了显著的差异甲基化区域 (DMR).
- 在整个妊娠期间,在cfDNA,胎盘组织和热囊细胞中观察到逐渐的DNA甲基化变化.
- 在cfDNA中与妊娠年龄相关的特定的DMR显示了同胞细胞/细胞细胞中可比的关联,并且在母体衣样本中被低甲基化.
结论:
- 母亲cfDNA可用于非侵入性地识别妊娠年龄依赖的胎盘DNA甲基化标记.
- 这种方法为未来对胎盘表观遗传学和怀孕监测的研究提供了可行的参考.
- 研究结果强调了cfDNA甲基化作为跟踪胎盘发育和健康的生物标志物的潜力.
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