在小鼠发育过程中构建转录因子结合图谱,确定了流行的调节区域
Anna Nordin1,2,3, Gianluca Zambanini1,2, Mattias Enar Jonasson1,2
1Wallenberg Centre for Molecular Medicine, Linköping University, 58185 Linköping, Sweden.
概括
这项研究绘制了基因调节器在发育过程中在小鼠组织中结合的基因图. 它揭示了对胚胎发育至关重要的保护性调节区域,并在人类中得到保护.
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:
- 基因调节者通过对基因组的组合结合来控制组织特异性基因表达.
- 了解整个组织的全基因组调节活性对于破译发育基因调节至关重要.
研究的目的:
- 绘制关键转录因子和参与发育信号通路的辅助因子的全基因组结合概况.
- 在小鼠胚胎发育过程中调查基因调节者的组织和时间特异性活性.
主要方法:
- 利用CUT&RUN测序系统地绘制全基因组结合配置文件.
- 分析数据集以确定基因调节者的组织和时间特定的结合模式.
- 研究了调节区域的进化保护及其与发育基因的关联.
主要成果:
- 对个别基因调节者的特定组织和时间特定的结合活动.
- 发现了由多个调节器约束的"流行的"调节区域,表现出高度的进化保护.
- 这些保存区域位于重要的发育基因的转录起点附近,失调导致胚胎致死.
- 这些地区的人类同类表现出类似的结合模式和保护,突出显示了它们在人类发展中的重要性.
结论:
- 这项研究提供了基因调节器在胚胎发育过程中如何与基因组相互作用的基础理解.
- 确定了对发展至关重要的保护性监管元素,表明了物种间的保护机制.
- 这些发现代表了全面了解发育过程中的基因组调节的重要一步.
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