Dynamic and aberrant patterns of H3K4me3, H3K9me3, and H3K27me3 during early zygotic genome activation in cloned mouse embryos.

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-12-01 Epub Date: 2022-09-15 DOI:10.1017/S0967199422000454

Zhihui Liu, Jing Cui, Weiguo Wang, Mingyang Li, Zhisong Wang, Giorgio Antonio Presicce, Xiuchun Cindy Tian, Liyou An, Fuliang Du

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引用次数: 2

Abstract

Somatic cell nuclear transfer (NT) is associated with aberrant changes in epigenetic reprogramming that impede the development of embryos, particularly during zygotic genome activation. Here, we characterized epigenetic patterns of H3K4me3, H3K9me3, and H3K27me3 in mouse NT embryos up to the second cell cycle (i.e. four-celled stage) during zygotic genome activation. In vivo fertilized and parthenogenetically activated (PA) embryos served as controls. In fertilized embryos, maternal and paternal pronuclei exhibited asymmetric H3K4me3, H3K9me3, and H3K27me3 modifications, with the paternal pronucleus showing delayed epigenetic modifications. Higher levels of H3K4me3 and H3K9me3 were observed in NT and PA embryos than in fertilized embryos. However, NT embryos exhibited a lower level of H3K27me3 than PA and fertilized embryos from pronuclear stage 3 to the four-celled stage. Our finding that NT embryos exhibited aberrant H3K4me3, H3K9me3, and H3K27me3 modifications in comparison with fertilized embryos during early zygotic genome activation help to unravel the epigenetic mechanisms of methylation changes in early NT reprogramming and provide an insight into the role of histone H3 in the regulation of cell plasticity during natural reproduction and somatic cell NT.

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克隆小鼠胚胎早期合子基因组激活过程中H3K4me3、H3K9me3和H3K27me3的动态和异常模式

体细胞核移植(NT)与表观遗传重编程的异常变化有关，这种变化会阻碍胚胎的发育，特别是在合子基因组激活期间。在这里，我们研究了H3K4me3、H3K9me3和H3K27me3在小鼠NT胚胎中直至合子基因组激活的第二个细胞周期(即四细胞期)的表观遗传模式。体内受精和孤雌生殖激活(PA)胚胎作为对照。在受精卵中，母本和父本原核表现出不对称的H3K4me3、H3K9me3和H3K27me3修饰，父本原核表现出延迟的表观遗传修饰。NT和PA胚胎中H3K4me3和H3K9me3的表达水平高于受精胚胎。然而，从原核阶段3到四细胞阶段，NT胚胎的H3K27me3水平低于PA和受精胚胎。我们发现，与受精卵相比，NT胚胎在早期合子基因组激活过程中表现出异常的H3K4me3、H3K9me3和H3K27me3修饰，这有助于揭示早期NT重编程中甲基化变化的表观遗传机制，并深入了解组蛋白H3在自然生殖和体细胞NT过程中调节细胞可塑性的作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.