arXiv:2502.01311cs.LGcs.AI2025-02被引 1

用DNABERT和卷积网络预测转录因子结合位点,性能优于现有方法。

TFBS-Finder: Deep Learning-based Model with DNABERT and Convolutional Networks to Predict Transcription Factor Binding Sites

  • 融合DNABERT与改进的卷积模块提取序列特征
  • 在165个ENCODE数据集上表现更优,准确率显著提升
  • 适合基因调控研究者使用,代码开源可复现

转录因子通过结合到特定基因组区域(即转录因子结合位点,TFBS)来调控基因表达,这些位点通常位于基因启动子区。准确预测这些结合位点对理解复杂的基因调控网络至关重要。尽管已有多种深度学习模型用于该任务,但仍存在优化空间。本文提出一种深度学习模型TFBS-Finder,结合预训练的DNABERT进行序列嵌入,以捕捉DNA序列的长程依赖关系;并引入卷积神经网络(CNN)、改进的卷积块注意力模块(MCBAM)和多尺度注意力卷积模块(MSCA),有效提取高阶局部特征。模型在165个ENCODE ChIP-seq数据集上进行了训练与测试,并开展了消融实验、跨细胞系验证及与其他模型的对比。结果表明,该方法在预测精度上优于现有主流方法。代码与数据集已公开于https://github.com/NimishaGhosh/TFBS-Finder/。

原文摘要 · Abstract (English)

Transcription factors are proteins that regulate the expression of genes by binding to specific genomic regions known as Transcription Factor Binding Sites (TFBSs), typically located in the promoter regions of those genes. Accurate prediction of these binding sites is essential for understanding the complex gene regulatory networks underlying various cellular functions. In this regard, many deep learning models have been developed for such prediction, but there is still scope of improvement. In this work, we have developed a deep learning model which uses pre-trained DNABERT, a Convolutional Neural Network (CNN) module, a Modified Convolutional Block Attention Module (MCBAM), a Multi-Scale Convolutions with Attention (MSCA) module and an output module. The pre-trained DNABERT is used for sequence embedding, thereby capturing the long-term dependencies in the DNA sequences while the CNN, MCBAM and MSCA modules are useful in extracting higher-order local features. TFBS-Finder is trained and tested on 165 ENCODE ChIP-seq datasets. We have also performed ablation studies as well as cross-cell line validations and comparisons with other models. The experimental results show the superiority of the proposed method in predicting TFBSs compared to the existing methodologies. The codes and the relevant datasets are publicly available at https://github.com/NimishaGhosh/TFBS-Finder/.

基因调控深度学习DNA序列TFBS预测

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