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深度学习破译了主调节器和G四重复体在组织规范中的相关作用
Artem Bashkatov1, Andrey Andreasyan1, Dmitry Konovalov1
1International Laboratory of Bioinformatics, HSE University, Moscow, Russia.
Scientific reports
|July 2, 2025
概括
G四重复体 (G四重复体) 在组织特异化中起着关键作用. 我们的深度学习模型预测了全基因组的G-四重复位,揭示了它们与主调节基因和组织特异性调节的关联.
科学领域:
- 基因组学就是基因组学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 计算生物学 计算生物学
背景情况:
- G四重复体 (GQs) 是非正规的DNA结构,在基因调节中发挥作用.
- G-四重复形成序列 (G-flipons) 涉及染色体结构和基因表达.
- 在组织特异性基因调节中G-四重复的作用仍然在很大程度上未被探索.
研究的目的:
- 调查G-四重复合体在组织特征中的作用.
- 开发一个深度学习框架,用于全基因组的G-四重复性预测在人类组织.
- 为了识别特定于组织的G-四重体调节模式及其相关基因.
主要方法:
- 使用实验性GQ地图,ATAC-seq峰值,RNA聚合酶,基因质标记和转录因子结合位点来训练一个深度学习模型 (DeepGQ).
- 该模型在EndoQuad 4-6级的GQ中接受了训练,并与全面的EndoQuad数据集 (1-6级) 进行了验证.
- GQ促进者预测被分类为"核心"或"组织特定"以确定监管模式.
主要成果:
- 全基因组G-四重复预测在14种人类组织类型中产生.
- 在预测的组织特异性G-四重复位和主调节基因 (MRG) 之间观察到显著的重叠.
- 组织特定的G-四重复位也与组织特定的DNase过敏位和调节R循环形成的蛋白质重叠.
结论:
- G四重复体,特别是组织特异性基因,与主调节基因相关,并在组织特异性中发挥作用.
- 这些发现突出了主调节基因和G-四复合体之间的相互作用,由RNA:DNA杂交物介导.
- 这项研究为了解G-四重体在发育过程和组织识别中的功能作用提供了一个框架.
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