单细胞长读Hi-C,scNanoHi-C2,详细介绍了胚胎阶段生殖细胞中的3D基因组重组

单细胞长读Hi-C,scNanoHi-C2,详细介绍了胚胎阶段生殖细胞中的3D基因组重组

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Updated: Jun 20, 2026

Hi-C: A Method to Study the Three-dimensional Architecture of Genomes.

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Hi-C: A Method to Study the Three-dimensional Architecture of Genomes.

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Jiansen Lu^1,2,3, Wen Li⁴, Fuchou Tang^5,6,7

¹Biomedical Pioneering Innovative Center, School of Life Sciences, Peking University, Beijing, China.

Nature structural & molecular biology

|July 4, 2025

概括

我们开发了一种新方法scNanoHi-C2,用于研究个体胚胎生殖细胞 (EGC) 中的3D基因组结构. 这揭示了介质变异过程中的动态色素重组以及雄性EGC中意想不到的结构.

科学领域:

基因组学就是基因组学.
发展生物学发展生物学
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:

胚胎生殖细胞 (EGCs) 在发育过程中经历了关键的命运决定.
雌性EGC进入半变化,而雄性EGC则在线索性地停止.
了解个体EGC中的3D基因组结构动态至关重要,但具有挑战性.

研究的目的:

研究单个小鼠EGC中的3D基因组结构的动态.
揭示染色质结构在生殖细胞发育和半分裂过程中如何变化.
描述雄性和雌性EGC中独特的染色体组织.

主要方法:

开发和应用一个单细胞,长时间读取的Hi-C方法 (scNanoHi-C2).
从单细胞数据重建3D基因组模型.
对染色质相互作用和细分的系统分析.

主要成果:

雌性EGC X染色体在半分裂过程中表现出特定的B区相互作用.
在半变异过程中观察到的动态染色体定位和随机非同质染色体邻近.
可转移的元素重组,在中介性TAD边界附近的非对称的Alu/B2元素分布.
高阶相互作用从B转移到A分区,可能有助于介质转录.
线粒体被捕的雄性EGC显示出独特的染色质结构,而不是典型的G0状态.

结论:

scNanoHi-C2是一个强大的工具,用于剖析单细胞3D基因组动态.
在EGC中,染色体结构的重编程是复杂的,并以性别为特征.
动态基因组组织对于介质进展和生殖细胞命运至关重要.

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