转化体和转录体共同分析揭示了TPRXs在人类胚胎基因组激活中的作用
Zhuoning Zou1,2,3, Chuanxin Zhang4,5,6,7,8, Qiuyan Wang1,2
1Center for Stem Cell Biology and Regenerative Medicine, MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing 100084, China.
概括
这项研究揭示了早期发育过程中人类胚胎基因组激活 (ZGA) 的关键转化调节剂. 类似PRD的同源体转录因子对ZGA和胚胎发育至关重要.
科学领域:
- 发育生物学
- 遗传学
- 分子生物学
背景情况:
- 转化调节对于卵细胞转化为胚胎 (OET) 和胚胎基因组激活 (ZGA) 是至关重要的.
- 了解这些过程是人类早期发展的关键.
研究的目的:
- 在人类卵细胞和早期胚胎中共同分析转化体和转录体.
- 在OET期间,确定物种之间保存和分离的转换景观.
- 发现人类ZGA的关键调节剂.
主要方法:
- 综合的超低输入核糖体分析 (Ribo-lite) 和信使RNA测序.
- 对比人类和小鼠的卵子和早期胚胎.
- 在人类胚胎干细胞中利用基因淘汰和子宫外表达.
主要成果:
- 在表观遗传重编程,转子体防御和小RNA生物生成中涉及广泛的差异化转化基因.
- 在ZGA周围发现高转化PRD样本体转录因子 (例如TPRXL,TPRX1,TPRX2).
- 证明TPRX1/2/L的降低会影响ZGA和植入前发育.
- 显示 TPRX 激活关键的 ZGA 基因在异位表达时.
结论:
- 在OET过程中发现了保存和转换的差异.
- 鉴定了PRD类同源体转录因子作为人类ZGA的关键调节剂.
- 突出了转化控制在人类早期发展的重要性.
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