300调节了组织激素的克罗托尼和植入前胚胎发育
Di Gao1,2,3, Chao Li3, Shao-Yuan Liu3
1Shenzhen Key Laboratory of Fertility Regulation, Center of Assisted Reproduction and Embryology, The University of Hong Kong Shenzhen Hospital, 518053, Shenzhen, China.
Nature communications
|July 30, 2024
概括
通过P300调节的基因组基化对胚胎发育至关重要. 这种表观遗传修饰确保了正确的基因表达和进展到囊胚阶段.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 分子生物学分子生物学
- 发展生物学 发展生物学
背景情况:
- 基因组 lysine crotonylation 是一个进化保存的表观遗传修饰.
- 它影响基因转录,精子生成和细胞循环过程.
- 它在哺乳动物植入前胚胎发育中的作用在很大程度上是未知的.
研究的目的:
- 为了研究哺乳动物植入前胚胎发育期间的激素缩的动态变化和功能.
- 为了确定参与催化胚胎中基因组激素化酶的关键酶.
- 阐明胚胎发育中的基因素克罗托尼化调节机制.
主要方法:
- 在小鼠胚胎中,转录协激活剂P300的耗尽.
- 转录组分析以评估基因表达变化.
- 染色体免疫沉以研究基因素修饰局部化.
主要成果:
- 在胚胎发育过程中,P300被确定为组织激素缩的关键编写者.
- P300的枯竭导致了显著的胚胎发育缺陷和转录组失调.
- 通过P300介导的基因组激素克罗托尼化直接刺激转录和调节基因表达.
- 基因组H3氨酸18化 (H3K18cr) 标记了活跃的促进子区域.
- H3K18cr作为转录调节器激活的表观遗传指标.
结论:
- 通过P300介导的基因组激素缩化对于成功的胚胎发育至囊胚阶段至关重要.
- 基因组结,特别是H3K18cr,在早期胚胎发生过程中对调节基因转录起着至关重要的作用.
- 这项研究提出了一个模型,其中P300驱动的基因组激素克罗化控制了胚胎发育命运.
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