Abstract
Multiple sclerosis (MS) is a common chronic autoimmune disorder of the central nervous system that predominantly affects young adults. Mounting evidence indicates that deregulation of microRNAs (miRNAs) in cerebrospinal fluid (CSF) has been implicated in MS as a potential biomarker. However, comprehensive assessments of CSF miRNAs and their target genes are lacking. Here, aberrantly expressed CSF miRNAs of MS patients were obtained from numerous studies by manual search. With detailed information on these miRNAs, we utilized online databases to screen out immune-related target genes and further performed Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses. To identify MS high-risk pathways and pivotal genes, pathway crosstalk and pathway-gene networks were constructed, followed by the establishment of a protein–protein interaction (PPI) network. The datasets collected from ArrayExpress were used to assess pivotal genes. Overall, 21 MS-related CSF miRNAs were included in this study. Subsequently, we identified 469 MS-related genes and 14 high-risk pathways. In the pathway-gene network, 27 critical MS-related genes participated in at least half of the high-risk pathways, and these genes were used to identify pivotal genes. Finally, miR-150, miR-328, and miR-34c-5p were determined to be risk miRNAs via the regulation of the pivotal risk genes MAPK1, AKT1, and VEGFA. Among them, VEGFA was validated to be significantly decreased in the CSF cells of MS patients by transcriptomic datasets. These findings may provide potential biomarkers or therapeutic targets and help elucidate the molecular mechanisms underlying the pathogenesis of MS.
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The data and other items supporting the results of the study will be made available upon reasonable request.
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Thanks to Zhiqiang Zhang for suggestions and English editing on the manuscript.
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This work was supported by a grant from the Provincial Natural Science Foundation of Heilongjiang province (No. ZD2020H004).
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YS and ZL designed research, analyzed the data, created the figures and tables, and wrote the manuscript. XR and YW analyzed the data and revised the original manuscript. JF designed research and provided final critical revisions. All authors critically read and approved the final manuscript.
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Su, Y., Li, Z., Rang, X. et al. Integrated Analysis and Identification of CSF-Derived Risk miRNAs and Pivotal Genes in Multiple Sclerosis. J Mol Neurosci 72, 1916–1928 (2022). https://doi.org/10.1007/s12031-022-02007-9
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DOI: https://doi.org/10.1007/s12031-022-02007-9