MRCNN: a deep learning model for regression of genome-wide DNA methylation.

Abstract:

BACKGROUND:Determination of genome-wide DNA methylation is significant for both basic research and drug development. As a key epigenetic modification, this biochemical process can modulate gene expression to influence the cell differentiation which can possibly lead to cancer. Due to the involuted biochemical mechanism of DNA methylation, obtaining a precise prediction is a considerably tough challenge. Existing approaches have yielded good predictions, but the methods either need to combine plenty of features and prerequisites or deal with only hypermethylation and hypomethylation. RESULTS:In this paper, we propose a deep learning method for prediction of the genome-wide DNA methylation, in which the Methylation Regression is implemented by Convolutional Neural Networks (MRCNN). Through minimizing the continuous loss function, experiments show that our model is convergent and more precise than the state-of-art method (DeepCpG) according to results of the evaluation. MRCNN also achieves the discovery of de novo motifs by analysis of features from the training process. CONCLUSIONS:Genome-wide DNA methylation could be evaluated based on the corresponding local DNA sequences of target CpG loci. With the autonomous learning pattern of deep learning, MRCNN enables accurate predictions of genome-wide DNA methylation status without predefined features and discovers some de novo methylation-related motifs that match known motifs by extracting sequence patterns.

journal_name

BMC Genomics

journal_title

BMC genomics

authors

Tian Q,Zou J,Tang J,Fang Y,Yu Z,Fan S

doi

10.1186/s12864-019-5488-5

subject

Has Abstract

pub_date

2019-04-04 00:00:00

pages

192

issue

Suppl 2

issn

1471-2164

pii

10.1186/s12864-019-5488-5

journal_volume

20

pub_type

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