Abstract
Major depressive disorder (MDD) is generally among the most prevalent psychiatric illnesses. Significant advances have occurred in comprehension of the MDD biology. However, it is still essential to recognize new biomarkers for potential targeted treatment of patients with MDD. The present work deals with in-depth comparative computational analyses to obtain new insights, such as gene ontology and pathway enrichment analyses and weighted gene co-expression network analysis (WGCNA) through gene expression dataset. The expression of selected hub-genes was validated in MDD patients using quantitative real-time PCR (RT-qPCR). We found that MDD progression includes the turquoise module genes (p-value = 1e-18, r = 0.97). According to gene enrichment analysis, the cytokine-mediated signaling pathway mostly involves genes in this module. By selection of four candidate hub-genes (IL6, NRG1, TNF, and BDNF), RT-qPCR validation was performed. A significant NRG1 downregulation was revealed by the RT-qPCR outcomes in MDD. In MDD patients, TNF and IL6 expression were considerably higher, and no considerable differences were found in the BDNF expression. Ultimately, based on ROC analyses, IL6, NRG1, and TNF had a higher MDD diagnostic performance. Therefore, our study presents information on the intricate association between MDD development and cytokine-mediated signaling, thus providing new rationales to develop new therapeutic approaches.
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SJ and HS conceptualized and designed the study and revised the manuscript; SAMN collected the data, evaluated and interpreted the results, and wrote the manuscript. All authors approved the current version of the manuscript.
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Jalili, S., Shirzad, H. & Mousavi Nezhad, S.A. Prediction and Validation of Hub Genes Related to Major Depressive Disorder Based on Co-expression Network Analysis. J Mol Neurosci 74, 8 (2024). https://doi.org/10.1007/s12031-023-02172-5
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DOI: https://doi.org/10.1007/s12031-023-02172-5