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arXiv 2103.04246q-bio.GNcs.AIcs.LG
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基于离散组合能量网络的RNA可变剪接预测

RNA Alternative Splicing Prediction with Discrete Compositional Energy Network

Nanyang Technological University(南洋理工大学)

Alvin Chan, Anna Korsakova, Yew-Soon Ong, Fernaldo Richtia Winnerdy, Kah Wai Lim, Anh Tuan Phan

摘要:

一个基因可以通过一个称为可变剪接的过程编码不同的蛋白质版本。由于蛋白质在细胞功能中起主要作用,异常剪接谱可导致多种疾病,包括癌症。可变剪接是由基因的一级序列和其他调控因素如RNA结合蛋白水平决定的。以这些为输入,我们将RNA剪接的预测公式化为回归任务,并构建一个新的训练数据集(CAPD)来对学习模型进行基准测试。我们提出了离散组成能量网络(DCEN),它利用剪接位点,接头和转录本之间的层次关系来实现这一任务。在可变剪接预测的情况下,DCEN通过其组成剪接点的能量值对mRNA转录概率进行建模。随后将这些转录概率映射到关键核苷酸的相对丰度值,并使用地面真实实验测量进行训练。通过我们对CAPD的实验,我们表明DCEN优于基线和消融变体。

英文摘要:

A single gene can encode for different protein versions through a process called alternative splicing. Since proteins play major roles in cellular functions, aberrant splicing profiles can result in a variety of diseases, including cancers. Alternative splicing is determined by the gene's primary sequence and other regulatory factors such as RNA-binding protein levels. With these as input, we formulate the prediction of RNA splicing as a regression task and build a new training dataset (CAPD) to benchmark learned models. We propose discrete compositional energy network (DCEN) which leverages the hierarchical relationships between splice sites, junctions and transcripts to approach this task. In the case of alternative splicing prediction, DCEN models mRNA transcript probabilities through its constituent splice junctions' energy values. These transcript probabilities are subsequently mapped to relative abundance values of key nucleotides and trained with ground-truth experimental measurements. Through our experiments on CAPD, we show that DCEN outperforms baselines and ablation variants.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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