This study has constructed a PTC‐related lncRNA‐miRNA‐mRNA network and identified the hub lncRNA RP11‐159F24.1 in the tumorigenesis, which provided novel insights to explore the underlying mechanism of PTC.
Abstract
Papillary thyroid cancer (PTC) is one of the most common cancers worldwide, and its carcinogenesis is influenced by a complex network of gene interactions. In this study, the microarray expression profile was re‐annotated into a lncRNA‐mRNA biphasic profile. LncRNA‐mRNA interactions were confirmed by established miRNA‐RNA data and hypergeometric test. Then, a PTC‐related lncRNA‐miRNA‐mRNA network (PTCRN) was constructed by integrating differentially expressed genes with the RNA‐RNA networks. The new network consisted of 21 lncRNAs, 241 mRNAs and 803 edges. To prioritize PTC‐related genes, we performed topological analysis and random walk with restart (PWR) algorithm analysis of PTCRN. Both analyses identified lncRNA RP11‐159F24.1 as a hub node in the network, which could interact with 47 mRNAs by sponging miR‐485. In functional enrichment analysis, these interacting mRNAs were associated with the pathways in cancer. In validation, RP11‐159F24.1 (up‐regulated; P = 0.0013) showed an opposite expression pattern with its target miR‐485 (down‐regulated; P = 0.0013) in PTC, indicating that the RP11‐159F24.1/miR‐485/mRNAs axis might play an important role in the development of PTC. In conclusion, this study has constructed a PTC‐related lncRNA‐miRNA‐mRNA network and identified the hub lncRNA RP11‐159F24.1 in the tumorigenesis, which provided novel insights to explore the underlying mechanism of PTC.
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