VGLL1对正在发育的热囊细胞区的转录组和表观基因组都有贡献
bioRxiv : the preprint server for biology
|November 24, 2025
概括
VGLL1是一种人类特异性的胎盘标志物,对人类早期发育至关重要. 它整合了关键的信号通路,以确定托菲克托皮 (TE) 身份,这对于植入和胎盘形成至关重要.
科学领域:
- 发展生物学 发展生物学
- 干细胞生物学 干细胞生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 托菲克托皮 (TE) 是哺乳动物发育中的第一个血统,形成胎盘.
- 由于早期发育中的物种差异,需要针对人类的特定模型.
- 此前,VGLL1已被确定为人类特异性的胎盘标记物.
研究的目的:
- 使用基于多能干细胞 (PSC) 的模型研究人类TE形成期间的染色质重塑和转录动态.
- 阐明VGLL1在确定热囊细胞身份和整合信号通路中的作用.
主要方法:
- 多能干细胞 (PSC) 模型用于BMP4诱导的TE分化.
- 染色体可访问性测试.染色体可访问性测试.
- 转录概况. 转录概况.
- 对转录因子和信号通路相互作用的分析.
主要成果:
- BMP4诱导的热囊细胞基因表达和短暂的中皮标记物.
- VGLL1是关键的TE转录因子 (GATA2/3,TFAP2A/C) 的下游.
- VGLL1提高了EGFR的调节,加强了GATA3,增强了WNT信号,并准了KDM6B.
- KDM6B通过去除H3K27me3压制标记来促进TE标记器的激活.
结论:
- VGLL1对于完全的人类热囊细胞身份至关重要,并集成HIPPO,BMP和WNT信号.
- VGLL1 作为 TE 机构的中央监管机构.
- 通过KDM6B的表观遗传调节将VGLL1活动与TE血统身份联系起来.
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