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新型长非编码RNA lnc_2217通过山羊的miR-877-3p/YTHDF2通路调节胚胎基因组激活
Haonan Chen1, Mengyuan Tian1, Ershuai Kuang1
1Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China.
Theriogenology
|October 19, 2025
概括
一种新的长非编码RNA (lncRNA), lnc_2217,对于早期胚胎发育至关重要. 它通过控制母体mRNA衰变来调节胚胎基因组激活 (ZGA),这对于山羊胚胎生成至关重要.
科学领域:
- 发展生物学 发展生物学
- 基因组学就是基因组学.
- 在RNA生物学,RNA生物学.
背景情况:
- 紫毒基因组激活 (ZGA) 和母体mRNA衰变对于哺乳动物早期胚胎发育至关重要.
- 长非编码RNAs (lncRNAs) 在ZGA中的确切作用在很大程度上是未知的.
研究的目的:
- 在山羊的早期胚胎发育过程中,研究一种新型lncRNA,Inc_2217的功能.
- 阐明lnc_2217调节ZGA和母体mRNA周转的分子机制.
主要方法:
- 小干扰RNA (siRNA) 微注射以击倒 lnc_2217.7.
- RNA测序 (RNA-seq) 和5-乙氨基尿素 (5-EU) 整合试验用于评估转录和mRNA水平.
- 对lncRNA/microRNA/mRNA调节网络的分析.
主要成果:
- lnc_2217 knockdown显著减少了胚胎细胞形成和增加了发育停止.
- lnc_2217 缺陷导致全球de novo转录受损,并加速了母体mRNA的降解.
- lnc_2217通过隔离miR-877-3p,上调YTHDF2和稳定关键的母体转录来作为竞争的内源RNA (ceRNA) 起作用.
结论:
- 确定了lnc_2217/miR-877-3p/YTHDF2轴作为一个关键调节器,在ZGA过程中同步转录激活与母亲mRNA清除.
- lnc_2217对于早期山羊胚胎发生是不可或缺的,强调其在协调关键发育事件中的作用.
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