Abstract
Our study aimed to explore the molecular mechanisms and novel target genes of neuropathic pain via bioinformatics analysis. Gene expression profiling of GSE30691 which was consisted of sciatic nerve lesion and sham control samples at 3 days, 7 days, 21 days, and 40 days (D3, D7, D21, and D40) after injury were downloaded from Gene Expression Omnibus. Differentially expressed genes (DEGs) were identified for all the four time points. Overlapped DEGs for all the four time points were used for functional and weighted co-expression modular analysis. Afterwards, protein-protein interaction (PPI) network was analyzed by MCODE (Molecular Complex Detection) and BiNGO. Pathway network was constructed according to the enriched pathways of PPI network and relevant pathways selected from the Comparative Toxicogenomics Database. There were 355 overlapped DEGs for all the four time points. Two co-expression modules had significant positive correlations with disease. The top ten hub DEGs in the PPI network were Fos, Tp53, Csk, Map2k2, Stat3, Ccl2, Pxn, Tgfb1, Notch1, and Prkacb. Fos, Dusp1, Tp53, Tgfb1, and Map2k2 participated in MAPK signaling pathway, while Csk participated in chemokine signaling pathway. The expressions of Fos, Tp53, Csk, and Map2k2 were significantly increased at D3. Tp53, Csk, and Map2k2 continued overexpressing until at D7, and an elevated tendency in Csk expression could be observed until at D21. The expression of Fos reached up to the highest at D40. Fos, Tp53, Csk, and Map2k2 might be the potential biomarkers related to neuropathic pain.
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Zhang, Cg., Wan, Hq., Ma, Kn. et al. Identification of Biomarkers Related to Neuropathic Pain Induced by Peripheral Nerve Injury. J Mol Neurosci 69, 505–515 (2019). https://doi.org/10.1007/s12031-019-01322-y
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DOI: https://doi.org/10.1007/s12031-019-01322-y