转录组分析和表观遗传调节器在人类卵子细胞在卵子细胞中介成熟的不同阶段
Carla Caniçais1, Daniel Sobral2, Sara Vasconcelos3
1Genetics Unit, Department of Pathology, Faculty of Medicine University of Porto (FMUP), 4200-319, Portugal; ICBAS- School of Medicine and Biomedical Sciences, University of Porto, 4050-313, Porto, Portugal.
Developmental biology
|December 16, 2024
概括
人类卵细胞的成熟涉及显著的基因表达变化. 研究人员在三个关键阶段分析了基因活动,揭示了总和独特基因表达的下降,并确定了可能表明卵细胞质量的关键表观遗传调节者.
科学领域:
- 生殖生物学 生殖生物学
- 分子遗传学 分子遗传学
- 细胞生物学 细胞生物学
背景情况:
- 人类卵细胞储存和调节母亲的mRNA,以促进早期发育.
- 卵细胞成熟是成功受精和胚胎发育的关键过程.
- 了解人类卵细胞成熟期间的转录组变化对于评估卵细胞质量至关重要.
研究的目的:
- 为了研究人类卵细胞在介质成熟过程中的转录基因景观.
- 在成熟阶段识别差异表达基因 (DEG) 和独特表达基因.
- 分析人类卵细胞中表观遗传调节者的表达模式.
主要方法:
- 对人类卵细胞进行了单卵细胞转录组分析,这些卵细胞处于生殖囊 (GV),元相I (MI) 和元相II (MII) 阶段.
- 对每个阶段的基因表达水平和独特的基因表达量化.
- 进行了差异基因表达分析和基因本体学 (GO) 丰富分析.
主要成果:
- 从GV到MII阶段观察到总和独特表达基因的逐渐减少.
- 在GV和MII卵子细胞 (1165 DEG) 和GV和MI卵子细胞 (42 DEG) 之间发现了基因表达的显著差异.
- 表观遗传调节剂,包括基因组修饰剂和DNA甲基化调节剂 (例如DNMT1,DPPA3,UHRF1),表达高,在成熟阶段表达差异.
结论:
- 这项研究提供了人类卵细胞成熟期间的转录动态的全面观点.
- 确定了特定的基因和表观遗传调节剂,可以作为人类卵细胞质量的潜在生物标志物.
- 这些发现有助于更深入地了解控制人类卵细胞发育和能力的分子机制.
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