Abstract
Ischemic stroke (IS) is a common and serious neurological disease. Extensive evidence indicates that activation of the immune system contributes significantly to the development of IS pathology. In recent years, some long non-coding RNAs (lncRNAs), acting as competing endogenous RNAs (ceRNAs), have been reported to affect IS process, especially the immunological response after stroke. However, the roles of lncRNA-mediated ceRNAs in immune pathogenesis of IS are not systemically investigated. In the present study, we generated a global immune-related ceRNA network containing immune-related genes (IRGs), miRNAs, and lncRNAs based on experimentally verified interactions. Further, we excavated an IS immune-related ceRNA (ISIRC) network through mapping significantly differentially expressed IRGs, miRNAs, and lncRNAs of patients with IS into the global network. We analyzed the topological properties of the two networks, respectively, and found that lncRNA NEAT1 and lncRNA KCNQ1OT1 played core roles in aforementioned two immune-related networks. Moreover, the results of functional enrichment analyses revealed that lncRNAs in the ISIRC network were mainly involved in several immune-related biological processes and pathways. Finally, we identified 17 lncRNAs which were highly related to the immune mechanism of IS through performing random walk with restart for the ISIRC network. Importantly, it has been confirmed that NEAT1, KCNQ1OT1, GAS5, and RMRP could regulate immuno-inflammatory response after stroke, such as production of inflammatory factors and activation of the immune cells. Our results suggested that lncRNAs exerted an important role in the immune pathogenesis of IS and provided a new strategy to do research on IS.
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The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Funding
This work was supported by grants from the National Natural Science Foundation of China (nos. 81820108014, 81771361, 82071407, 81801190, and 81901277), National Key Research and Development Project (no. 2018YFE0114400), and the Postdoctoral Foundation of Heilongjiang Province (no. LBH-TZ1019).
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All authors have participated in the work to take public responsibility for appropriate portions of the content and agreed to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved. WL and CY are responsible of the part of the design of the work. LL, XS, and WT contributed to the part of acquisition and analysis of data. ZH and LX contributed to the part of interpretation of data. KX and BC are responsible of the creation of new software used in the work. LS, WJ, and NS have been involved in drafting the manuscript and revising it critically. All authors read and approved the final manuscript.
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Supplementary Information
Supplementary table 1
The results of GO function enrichment based on DEIRGs regulated by DElncRNAs in the ISIRC network (XLS 124 kb)
Supplementary table 2
The results of KEGG enrichment analysis based on DEIRGs regulated by DElncRNAs in the ISIRC network (XLS 24 kb)
Supplementary table 3
The detailed interactions among DEIRGs, DEmiRNAs and candidate DElncRNAs (XLS 27 kb)
Supplementary table 4
The DElncRNAs in GSE140275 (XLSX 90 kb)
Supplementary Figure 1
Venn diagram of 17 candidate DElncRNAs and GSE140275; yellow ellipse indicates 17 candidate DElncRNAs, purple ellipse indicates DElncRNAs of GSE140275; overlap intersection indicates common shared DElncRNAs. (PNG 161 kb)
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Li, S., Cao, Y., Zhang, H. et al. Construction of lncRNA-Mediated ceRNA Network for Investigating Immune Pathogenesis of Ischemic Stroke. Mol Neurobiol 58, 4758–4769 (2021). https://doi.org/10.1007/s12035-021-02426-6
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DOI: https://doi.org/10.1007/s12035-021-02426-6