Background: Atrial fibrillation (AF) is one of the most common heart arrhythmic disorders
all over the world. However, it is worth noting that the mechanism underlying AF is still dimness.
Methods: In this study, we implemented a series of bioinformatics methods to explore the
mechanisms of lncRNAs underlying AF pathogenesis. The present study analyzed the public
datasets (GSE2240 and GSE115574) to identify differentially expressed long non-coding RNAs
(lncRNAs) and mRNAs in the progression of AF.
Results: Totally, 71 differentially expressed lncRNAs and 390 DEGs were identified in AF.Next,
we performed bioinformatics analyses to explore the functions of lncRNAs in AF. Gene Ontology
(GO) analysis indicated that differentially expressed lncRNAs were involved in regulating multiple
key biological processes, such as cell cycle and signal transduction. Kyoto Encyclopedia of Genes
and Genomes (KEGG) pathway analysis demonstrated these lncRNAs were associated with the
regulation of MAPK and Wnt signaling pathways. Eight lncRNAs (RP5-1154L15.2, RP11-
339B21.15, RP11-448A19.1, RP11-676J12.4, LOC101930415, MALAT1, NEAT1, and PWAR6)
were identified to be key lncRNAs and widely co-expressed with a series of differentially expressed
Conclusion: Although further validation was still needed, our study may be helpful to elucidate the
mechanisms of lncRNAs underlying AF pathogenesis and providing further insight into identifying
novel biomarkers for AF.