目的:本研究的目的是通过多种机器学习算法确定青光眼中心基因。
背景:青光眼多年来困扰着许多患者,眼睛压力过大,会不断损害神经系统,导致严重失明。目前缺乏有效的分子诊断方法。
目的:本研究试图揭示中心基因在青光眼中的分子机制和基因调控网络。随后试图揭示由hub基因调节的药物-基因-疾病网络。
方法:通过基因表达综合数据库获得微阵列测序数据集(GSE9944)。鉴定了青光眼中差异表达的基因。基于这些基因,我们构建了三个用于特征训练的机器学习模型,随机森林模型(RF)最小绝对收缩和选择算子回归模型(LASSO),和支持向量机模型(SVM)。同时,对GSE9944表达谱进行加权基因共表达网络分析(WGCNA)以鉴定青光眼相关基因。四组中的重叠基因被认为是青光眼的中心基因。基于这些基因,我们还构建了青光眼的分子诊断模型。在这项研究中,我们还进行了分子对接分析,以探索针对hub基因的基因-药物网络.此外,我们应用CIBERSORT方法评估了青光眼样本和正常样本中的免疫细胞浸润情况。
结果:确定了8个hub基因:ATP6V0D1,PLEC,SLC25A1,HRSP12,PKN1,RHOD,TMEM158和GSN。诊断模型显示出优异的诊断性能(曲线下面积=1)。GSN可能正调节T细胞CD4原初以及负调节T细胞调节(Tregs)。此外,我们构建了基因-药物网络,试图探索新型青光眼治疗药物.
结论:我们的结果系统地确定了8个hub基因,并建立了可以诊断青光眼的分子诊断模型。我们的研究为未来青光眼发病机制的系统研究提供了基础。
OBJECTIVE: The aims of this study were to determine hub genes in glaucoma through multiple machine learning algorithms.
BACKGROUND: Glaucoma has afflicted many patients for many years, with excessive pressure in the eye continuously damaging the nervous system and leading to severe blindness. An effective molecular diagnostic method is currently lacking.
OBJECTIVE: The present study attempted to reveal the molecular mechanism and gene regulatory network of hub genes in glaucoma, followed by an attempt to reveal the drug-gene-disease network regulated by hub genes.
METHODS: A microarray sequencing dataset (GSE9944) was obtained through the Gene Expression Omnibus database. The differentially expressed genes in Glaucoma were identified. Based on these genes, we constructed three machine learning models for feature training, Random Forest model (RF), Least absolute shrinkage and selection operator regression model (LASSO), and Support Vector Machines model (SVM). Meanwhile, Weighted Gene Co-Expression Network Analysis (WGCNA) was performed for GSE9944 expression profiles to identify Glaucoma-related genes. The overlapping genes in the four groups were considered as hub genes of Glaucoma. Based on these genes, we also constructed a molecular diagnostic model of Glaucoma. In this study, we also performed molecular docking analysis to explore the gene-drug network targeting hub genes. In addition, we evaluated the immune cell infiltration landscape in Glaucoma samples and normal samples by applying CIBERSORT method.
RESULTS: 8 hub genes were determined: ATP6V0D1, PLEC, SLC25A1, HRSP12, PKN1, RHOD, TMEM158 and GSN. The diagnostic model showed excellent diagnostic performance (area under the curve=1). GSN might positively regulate T cell CD4 naïve as well as negatively regulate T cell regulation (Tregs). In addition, we constructed gene-drug networks in an attempt to explore novel therapeutic agents for Glaucoma.
CONCLUSIONS: Our results systematically determined 8 hub genes and established a molecular diagnostic model that allowed the diagnosis of Glaucoma. Our study provided a basis for future systematic studies of Glaucoma pathogenesis.