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1.
BMC Bioinformatics ; 20(Suppl 15): 598, 2019 Dec 24.
Artigo em Inglês | MEDLINE | ID: mdl-31874597

RESUMO

BACKGROUND: Super-enhancers (SEs) are clusters of transcriptional active enhancers, which dictate the expression of genes defining cell identity and play an important role in the development and progression of tumors and other diseases. Many key cancer oncogenes are driven by super-enhancers, and the mutations associated with common diseases such as Alzheimer's disease are significantly enriched with super-enhancers. Super-enhancers have shown great potential for the identification of key oncogenes and the discovery of disease-associated mutational sites. RESULTS: In this paper, we propose a new computational method called DEEPSEN for predicting super-enhancers based on convolutional neural network. The proposed method integrates 36 kinds of features. Compared with existing approaches, our method performs better and can be used for genome-wide prediction of super-enhancers. Besides, we screen important features for predicting super-enhancers. CONCLUSION: Convolutional neural network is effective in boosting the performance of super-enhancer prediction.


Assuntos
Redes Neurais de Computação , Humanos , Neoplasias/genética , Oncogenes
2.
BMC Bioinformatics ; 18(Suppl 12): 418, 2017 Oct 16.
Artigo em Inglês | MEDLINE | ID: mdl-29072144

RESUMO

BACKGROUND: Studies have shown that enhancers are significant regulatory elements to play crucial roles in gene expression regulation. Since enhancers are unrelated to the orientation and distance to their target genes, it is a challenging mission for scholars and researchers to accurately predicting distal enhancers. In the past years, with the high-throughout ChiP-seq technologies development, several computational techniques emerge to predict enhancers using epigenetic or genomic features. Nevertheless, the inconsistency of computational models across different cell-lines and the unsatisfactory prediction performance call for further research in this area. RESULTS: Here, we propose a new Deep Belief Network (DBN) based computational method for enhancer prediction, which is called EnhancerDBN. This method combines diverse features, composed of DNA sequence compositional features, DNA methylation and histone modifications. Our computational results indicate that 1) EnhancerDBN outperforms 13 existing methods in prediction, and 2) GC content and DNA methylation can serve as relevant features for enhancer prediction. CONCLUSION: Deep learning is effective in boosting the performance of enhancer prediction.


Assuntos
Algoritmos , Biologia Computacional/métodos , Elementos Facilitadores Genéticos , Bases de Dados Genéticas , Humanos , Curva ROC
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