哺乳动物组织的空间表观基因组-转录基因组共分析
Di Zhang1, Yanxiang Deng2,3,4, Petra Kukanja5
1Department of Biomedical Engineering, Yale University, New Haven, CT, USA.
Nature
|March 16, 2023
概括
新的空间技术可以同时对组织中的表观基因组和转录基因组进行分析. 这使得研究人员能够将表观遗传变化与基因表达联系起来,揭示了细胞状态和组织结构的洞察力.
科学领域:
- 分子生物学
- 基因组学
- 神经科学
背景情况:
- 空间转录组和表观组是组织细胞状态分析的关键工具.
- 目前的方法只分析一个奥米克层,限制了对中央教条的机制理解.
- 研究表观遗传与基因表达之间的相互作用至关重要.
研究的目的:
- 开发和介绍新的技术,用于联合,空间分辨,全基因组的表观基因组和转录.
- 允许在同一组织部分同时分析基因表达的染色质可访问性或基因组修饰.
- 探索组织架构中的细胞表型和动态的表观遗传调节.
主要方法:
- 开发了两种用于共序染色体可访问性和基因表达的技术.
- 开发了两种用于对基因组修饰 (H3K27me3,H3K27ac,H3K4me3) 和基因表达的技术.
- 将这些方法应用于胚胎/幼鼠大脑和成年人类大脑,近乎单细胞分辨率.
主要成果:
- 实现了表观基因组和转录基因组的空间分辨,全基因组联合分析.
- 在空间表观基因组和转录基因组数据之间确定了高度一致的组织特征.
- 观察到不同的模式,表明表观遗传学和转录在定义细胞状态中的差异性作用.
结论:
- 连接表观基因组和转录基因组的像素对空间表观基因原始化,分化和基因调节的新见解.
- 这些技术为研究组织结构和细胞动态提供了强大的方法.
- 开发的方法对生命科学和生物医学研究具有重要意义.
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