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相关概念视频

Reporter Genes02:11

Reporter Genes

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Reporter genes are a type of protein-coding gene that are often tagged to a gene of interest. Once inside a target cell, reporter genes usually produce visually identifiable characteristics like fluorescence and luminescence when expressed along with the gene of interest. Thus, reporter genes “report” the presence or absence of genes of interest in an organism, determine the gene expression pattern, or track the physical location of a DNA segment or protein in the cell.
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相关实验视频

Updated: Jun 15, 2025

Prediction and Validation of Gene Regulatory Elements Activated During Retinoic Acid Induced Embryonic Stem Cell Differentiation
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TF-EPI:一种基于变压器的可解释增强剂-促进剂相互作用检测方法.

Bowen Liu1, Weihang Zhang1, Xin Zeng1

  • 1Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, University of Tokyo, Tokyo, Japan.

Frontiers in genetics
|August 26, 2024
PubMed
概括

我们开发了TF-EPI,这是一个基于变压器的深度学习模型,用于从DNA序列中检测增强剂-促进剂相互作用 (EPI). TF-EPI的性能优于现有的方法,并识别了细胞特异性的调节元素,推进了基因调节研究.

关键词:
变压器变压器变压器注意力机制注意力机制增强剂-促进剂相互作用.发现动机 发现动机转移学习转移学习

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科学领域:

  • 基因组学就是基因组学.
  • 计算生物学 计算生物学
  • 分子生物学分子生物学

背景情况:

  • 增强剂-促进剂相互作用 (EPI) 对基因表达调节和理解疾病机制至关重要.
  • 准确检测EPI对于破译复杂的监管网络至关重要.
  • 目前用于EPI检测的方法在可扩展性和准确性方面面临挑战,特别是在不同类型的细胞之间.

研究的目的:

  • 开发一种新的深度学习模型,TF-EPI,用于仅从DNA序列中检测增强剂-促进剂相互作用 (EPI).
  • 利用变压器架构的注意力机制来识别EPI中涉及的关键序列动机和转录因子结合位.
  • 提高EPI检测的准确性和可解释性,并探索其在了解细胞类型特定基因调节方面的应用.

主要方法:

  • 开发了TF-EPI,这是一个使用变压器架构进行基于序列的EPI检测的深度学习模型.
  • 使用变压器中的注意力机制来识别增强器和促进器中的重要序列动机和特征.
  • 与已建立的数据库 (JASPAR,UniBind) 验证了已识别的动机和序列,并分析了相关的转录因子 (TF).
  • 整合转移学习以提高跨细胞系EPI检测准确度.

主要成果:

  • 与最先进的方法相比,TF-EPI在用于EPI检测的多个基准数据集上表现优越.
  • 注意力机制成功地在增强剂和促进剂中识别出独特的,细胞类型特定的序列动机,对JASPAR和UniBind进行了验证.
  • 对TF动机的分析揭示了细胞类型中保存和异质的基因调节机制,并确定了细胞系特异的TF.
  • 转移学习显著提高了不同细胞系EPI检测的准确性.

结论:

  • TF-EPI提供了一种强大的,基于序列的方法,用于准确检测增强剂-促进剂相互作用.
  • 变压器的注意力机制提供了对EPI基础的序列决定因素和TF约束偏好有价值的见解.
  • 这种方法提升了对cis调节语法和细胞类型特定基因调节的理解,在该领域提供了一个里程碑.