基于生物信息学与机器学习分析重度抑郁症相关铁死亡关键基因
收稿日期: 2025-09-10
修回日期: 2026-03-26
录用日期: 2026-04-20
网络出版日期: 2026-06-29
基金资助
安徽省自然科学基金项目(2208085MH272);安徽省高校自然科学研究重点项目(2023AH050800)
Bioinformatics and Machine Learning-Based Analysis of Key Ferroptosis-Related Genes in Major Depressive Disorder
Received date: 2025-09-10
Revised date: 2026-03-26
Accepted date: 2026-04-20
Online published: 2026-06-29
目的:基于生物信息学与机器学习技术筛选重度抑郁症(major depressive disorder,MDD)相关铁死亡关键基因并构建诊断模型,为MDD的临床辅助诊断提供新型生物标志物。方法:从GEO基因数据库中获得MDD数据集,经R软件标准化和批次效应校正后,筛选差异基因(DEGs),将DEGs与FerrDb数据库铁死亡基因集取交集,得到MDD铁死亡相关基因(FRGs),对FRGs进行GO和KEGG富集分析。随后采用支持向量机(SVM)、随机森林(RF)和最小绝对收敛和选择算子(LASSO)回归多算法联合筛选MDD铁死亡相关关键基因(Hub-FRGs),并构建逻辑回归诊断模型。通过受试者工作特征曲线(ROC)评估模型效能,在独立验证集中进行验证,再进行免疫浸润分析。结果:获得29个FRGs,GO/KEGG主要富集于氧化应激、炎症、代谢等相关生物功能与通路。经机器学习算法筛选出MAFG、LCN2和G6PD为Hub-FRGs。所构建诊断模型在训练集曲线下面积(AUC)达0.932,在GSE76826(AUC=0.867)验证集中表现良好。免疫浸润结果显示巨噬细胞、CD4⁺ T、CD8⁺ T细胞与Hub-FRGs存在相关性。结论:铁死亡关键基因 MAFG、LCN2和G6PD具备作为MDD诊断标志物的潜力,可为MDD的临床诊断与治疗提供新的研究思路。
刘继俊
,
张慧
.
基于生物信息学与机器学习分析重度抑郁症相关铁死亡关键基因
Objective: To identify key ferroptosis-related genes (FRGs) in major depressive disorder (MDD) and construct a diagnostic model using bioinformatics and machine learning, aiming to provide novel biomarkers for the clinical auxiliary diagnosis of MDD.Methods: MDD datasets were obtained from the GEO database. After standardization and batch effect correction, differentially expressed genes (DEGs) were screened. The intersection of DEGs with the ferroptosis-related gene set from FerrDb defined MDD-specific FRGs, which underwent functional enrichment analysis (GO and KEGG). Hub-FRGs were subsequently identified through the combined application of support vector machine (SVM), random forest (RF), and least absolute shrinkage and selection operator (LASSO) regression. A logistic regression diagnostic model was constructed and evaluated using receiver operating characteristic (ROC) curve analysis, followed by validation in an independent set and immune infiltration analysis.Results: Twenty-nine FRGs were obtained, primarily enriched in biological functions and pathways related to oxidative stress, inflammation, and metabolism. Three genes—MAFG, LCN2, and G6PD—were selected as Hub-FRGs. The diagnostic model achieved an AUC of 0.932 in the training set and an AUC of 0.867 in the GSE76826 validation set. Immune infiltration analysis revealed significant correlations of macrophages, CD4⁺ T cells, and CD8⁺ T cells with the Hub-FRGs.Conclusion: The identified ferroptosis-related hub genes (MAFG, LCN2, and G6PD) possess the potential to serve as diagnostic biomarkers for MDD, providing new insights for the diagnosis and treatment of MDD.
[1] Marx W, Penninx BWJH, Solmi M, et al. Major depressive disorder[J].Nat Rev Dis Primers, 2023,9(1):44.
[2] Lu Jin, Xu Xiufeng, Huang Yueqin, et al. Prevalence of depressive disorders and treatment in China: a cross-sectional epidemiological study[J].Lancet Psychiatry, 2021,8(11):981-990.
[3] Li Qiaofeng, Lu Wentian, Zhang Qing, et al. Proprietary medicines containing Bupleurum chinense DC. (Chaihu) for depression: network meta-analysis and network pharmacology prediction[J].Front Pharmacol, 2022,13:773537.
[4] Rockson C, Girish C, Natarajan H, et al. A cross-sectional trait versus state biomarker analysis of inflammatory cytokines and miRNAs in patients with major depressive disorder[J].Indian J Psychol Med, 2025,47(1):57-64.
[5] Ait Tayeb AEK, Poinsignon V, Chappell K, et al. Major depressive disorder and oxidative stress: a review of peripheral and genetic biomarkers according to clinical characteristics and disease stages[J].Antioxidants, 2023,12(4):942.
[6] Stockwell BR, Friedmann Angeli JP, Bayir H, et al. Ferroptosis: a regulated cell death nexus linking metabolism, redox biology, and disease[J].Cell, 2017,171(2):273-285.
[7] Correia AS, Cardoso A, Vale N. Oxidative stress in depression: the link with the stress response, neuroinflammation, serotonin, neurogenesis and synaptic plasticity[J].Antioxidants, 2023,12(2):470.
[8] Wang Fang, Zhang Ming, Li Yan, et al. Alterations in brain iron deposition with progression of late-life depression measured by magnetic resonance imaging (MRI)-based quantitative susceptibility mapping[J].Quant Imaging Med Surg, 2022,12(7):3873-3888.
[9] Ryan SK, Zelic M, Han Y, et al. Microglia ferroptosis is regulated by SEC24B and contributes to neurodegeneration[J].Nat Neurosci, 2023,26(1):12-26.
[10] Leday GGR, Vértes PE, Richardson S, et al. Replicable and coupled changes in innate and adaptive immune gene expression in two case-control studies of blood microarrays in major depressive disorder[J].Biol Psychiatry, 2018,83(1):70-80.
[11] Zhou Nan, Yuan Xiaoqing, Du Qingsong, et al. FerrDb V2: update of the manually curated database of ferroptosis regulators and ferroptosis-disease associations[J].Nucleic Acids Res, 2023,51(D1):D571-D582.
[12] Warde-Farley D, Donaldson SL, Comes O, et al. The GeneMANIA prediction server: biological network integration for gene prioritization and predicting gene function[J].Nucleic Acids Res, 2010,38(Web Server issue):W214-W220.
[13] Sun Ye, Li Jinying, Wang Lin, et al. Identification of potential diagnoses based on immune infiltration and autophagy characteristics in major depressive disorder[J].Front Genet, 2022,13:702366.
[14] Cui Lulu, Li Shu, Wang Siman, et al. Major depressive disorder: hypothesis, mechanism, prevention and treatment[J].Signal Transduct Target Ther, 2024,9(1):30.
[15] Cheng Junxiang, Liu Zhifen, Zhu Ruifang, et al. Identifying potential pathogenic oxidative stress-related genes in depression through multi-omics summary-data-based Mendelian randomization analysis[J].J Affect Disord, 2025,388:119734.
[16] Xue Ying, Lu Fujia, Wang Weimin. Ferroptotic cells augment T-cell activation and neuroinflammation[J].Ageing Neurosci Dis, 2022,2:15.
[17] Dixon SJ, Lemberg KM, Lamprecht MR, et al. Ferroptosis: an iron-dependent form of nonapoptotic cell death[J].Cell, 2012,149(5):1060-1072.
[18] Xu Dejun, Wu Lin, Jiang Xiaohan, et al. SIRT2 inhibition results in meiotic arrest, mitochondrial dysfunction, and disturbance of redox homeostasis during bovine oocyte maturation[J].Int J Mol Sci, 2019,20(6):1365.
[19] Chen BY, Pathak JL, Lin HY, et al. Inflammation triggers chondrocyte ferroptosis in TMJOA via HIF-1α/TFRC[J].J Dent Res, 2024,103(7):712-722.
[20] Wang Huimeng, Sun Jiajia, Luo Yongsheng, et al. The role of ferroptosis in acute kidney injury: the preemptive mode of cell death and the bridging effect[J].Ren Fail, 2025,47(1):2536732.
[21] Dong Yishan, Li Yong, Tang Weijie, et al. Increased trophoblast cell ferroptosis via HMGB1/ACSL4 pathway is associated with spontaneous abortion[J].Reprod Sci, 2025,32(5):1713-1722.
[22] Mondal A, Mukherjee S, Upadhyay P, et al. Enhancing NADPH to restore redox homeostasis and lysosomal function in G6PD-deficient microglia[J].Heliyon, 2025,11(4):e42735.
[23] Naderi S, Khodagholi F, Janahmadi M, et al. Ferroptosis and cognitive impairment: unraveling the link and potential therapeutic targets[J].Neuropharmacology, 2025,263:110210.
[24] Yu Zhengran, Cheng Xing, Pan Wenxu, et al. The ferroptosis activity is associated with neurological recovery following chronic compressive spinal cord injury[J].Neural Regen Res, 2023,18(11):2482-2488.
[25] Fei Xiaowei, Dou Yanan, Yang Yuefan, et al. Lipocalin-2 inhibition alleviates neural injury by microglia ferroptosis suppression after experimental intracerebral hemorrhage in mice via enhancing ferritin light chain expression[J].Biochim Biophys Acta Mol Basis Dis, 2024,1870(7):167435.
[26] Dai Yi, Hu Lan. HSPB1 overexpression improves hypoxic-ischemic brain damage by attenuating ferroptosis in rats through promoting G6PD expression[J].J Neurophysiol, 2022,128(6):1507-1517.
[27] Nava RG, Adri AS, Filgueiras IS, et al. Modulation of neuroimmune cytokine networks by antidepressants: implications in mood regulation[J].Transl Psychiatry, 2025,15(1):314.
[28] Varsamos I, Patilas C, Galanis A, et al. The impact of nuclear factor Kappa B on the response of microglia in spinal cord injuries[J].Cureus, 2025,17(2):e79367.
[29] White Z, Cabrera I, Mei L, et al. Gut inflammation promotes microbiota-specific CD4 T cell-mediated neuroinflammation[J].Nature, 2025,643(8071):509-518.
[30] Zhang Zhaolong, Duan Zhongying, Cui Yu. CD8+ T cells in brain injury and neurodegeneration[J].Front Cell Neurosci, 2023,17:1281763.
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