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Updated: Jul 6, 2025

Mapping Mammalian 3D Genome Interactions with Micro-C-XL

Mapping Mammalian 3D Genome Interactions with Micro-C-XL

Published on: November 3, 2023

在植物中使用Micro-C-XL绘制核素分辨率染色体组织和增强剂-促进剂循环

Linhua Sun^1,2, Jingru Zhou¹, Xiao Xu¹

¹Peking University Institute of Advanced Agricultural Sciences, Shandong Laboratory of Advanced Agricultural Sciences at Weifang, Shandong, 261000, China.

Nature communications

|January 3, 2024

概括

微C-XL技术揭示了单核细胞分辨率的植物中微小的染色质组织. 该方法识别了增强剂-促进剂循环,并提供了对植物基因组3D结构的见解.

科学领域:

植物基因组学植物基因组学
表观遗传学在表观遗传学中,表观遗传学是指表观遗传学.
分子生物学分子生物学

背景情况:

了解植物染色体组织对于基因调节至关重要.
之前的方法缺乏对染色体结构的细度分辨率.

研究的目的:

使用Micro-C-XL在植物中剖析单核细胞分解染色体组织.
识别监管要素,如增强器-促进器循环及其机制.

主要方法:

微-C-XL:一种高通量染色体形状捕获技术.
利用小菌核酶和长交叉链接器进行高分辨率分析.
绝缘分析和RNA聚合酶II (Pol II) 的扰动.

主要成果:

识别了14000多个与可访问性,表观遗传标记和转录因子相关的染色质边界.
揭示了RNA聚合酶和局部染色体组织之间的关联,表明转录在域建立中的作用.
证实了Pol II在通过遗传和化学干扰来调节染色体组织中的功能.
将可见的循环和条纹映射到超级增强剂及其向基因上,为远端 cis-regulatory elements (CREs) 提供了见解.
成功地将Micro-C-XL应用于大豆和大米,证明了广泛的适用性.

结论:

微-C-XL提供了前所未有的细度分辨率植物染色体组织.
基因转录,特别是涉及Pol II,在塑造局部染色体域方面发挥着重要作用.
该研究提供了关于植物增强剂-促进剂相互作用和CREs机制的直接见解.
这项工作促进了对植物3D基因组架构的理解.

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