Publication

Abstract : Background Heart failure (HF) is a leading cause of mortality rate worldwide, but studied less for its underlying biomolecular mechanisms. With the advances in gene sequence analysis, many non-coding RNAs, especially from long non-coding RNA (lncRNA) genre are found to be involved in regulating HF conditions. Recent studies are based on competing endogenous RNA (ceRNA) theory in which lncRNA-miRNA-mRNA compounds control many disease conditions. Method In this paper, we present a topic model based network cluster analysis to identify the role of lncRNAs in HF. The network is constructed based on the differentially expressed long non-coding RNAs (lncRNAs), micro RNAs (miRNAs), and messenger RNAs (mRNAs) of heart failure patients and control samples from the gene expression omnibus (GEO) database. Further, we extend the primary ceRNA network by adding pathways as additional nodes. Deep belief network based feature learning is used to extract the features from the network automatically. Results We obtained two clusters where each cluster was a mixture of lncRNAs, mRNAs, miRNAs and pathways. The analysis included the identification of key lncRNAs, enriched pathways, and gene ontology terms from each cluster. Based on the shreds of evidence from literature, one of the clusters obtained was identified to be an essential functional module in HF mechanism. The potential of lncRNA as a diagnostic biomarker in HF was also analysed.