摘要
目的探究原发性开角型青光眼(POAG)房角细胞类型和细胞通信模式变化。方法从基因表达综合(GEO)数据库中下载单细胞数据集GSE231749(包含POAG的食蟹猴房角组织样本3例和健康食蟹猴房角组织样本3例,数据更新时间为2023年),分别设为POAG组与健康对照组。采用R包“Seurat”对数据进行降维、聚类、分群和可视化,并通过R包“CellChat”进行了细胞通信分析,确认POAG组和健康对照组细胞通信模式的差异。同时,联合GEO数据库中转录组测序(RNA-seq)数据集GSE27276(包含POAG的人类房角组织样本17例和健康人房角组织样本19例,数据更新时间为2023年)的差异基因分析,确定具体的细胞通信信号变化。结果健康对照组与POAG组细胞类型无明显差异,均可分为小梁网细胞、巨噬细胞、黑素细胞、周细胞、施莱姆氏管细胞、有髓施万细胞、无髓施万细胞、平滑肌细胞和血管内皮细胞。POAG组与健康对照组细胞间通信强度具有显著差异,其中,POAG组巨噬细胞移动抑制因子(MIF)-CD74、CX3C趋化因子配体1(CX3CL1)-CX3C趋化因子受体1(CX3CR1)、HBB等通信概率显著上调,分泌型磷蛋白1(SPP1)-(ITGA8+ITGB1)、SPP1-(ITGA4+ITGB1)、IGF2-IGF2R、CCL8-CCR1、CCL8/26/24/2-ACKR2等信号明显下调;RNA-seq分析证实,POAG组HBB、HBD、HBA、CD74等基因表达水平均高于健康对照组。结论小梁网组织中通过MIF/CD74信号上调、SPP1-(ITGA8+ITGB1)、SPP1-(ITGA4+ITGB1)信号下调共同参与纤维化过程,这可能是POAG潜在的致病机制。
Objective To explore the changes in trabecular meshwork cell types and cellular communication patterns in primary open-angle glaucoma(POAG).Methods The POAG single-cell dataset GSE135337(including the trabecular meshwork samples of 3 cynomolgus macaque monkeys with POAG and 3 healthy cynomolgus macaque monkeys,data updated to 2023)was downloaded from the Gene Expression Omnibus(GEO),two groups of samplesare named the POAG group and the control group.The downscaling,clustering,grouping,and visualization of data were performed using the Seurat package in R.The cellular communication pattern was analyzed by using the CellChat package in R to identify the differences in the cellular communication pattern between the POAG group and the control group.Meanwhile,the differential gene analysis was performed based on the transcriptome sequencing(RNA-seq)dataset GSE27276(including the atrial horn tissue samples from 17 POAG patients and 19 healthy individuals,data updated to 2023)from the GEO to identify specific cellular communication signaling changes.Results There were no significant differences in the cell types between the control group and the POAG group,including trabecular meshwork cells,macrophages,melanocytes,pericytes,Schlemm’s canal cells,myelinating Schwann cells,nonmyelinating Schwann cells,smooth muscle cells,and vascular endothelial cells.There was a significant difference in the cellular communication intensity between the POAG group and the control group.The expression of macrophage migration inhibitory factor(MIF)-CD74,C-X3-C motif chemokine ligand 1(CX3CL1)-C-X3-C motif chemokine receptor 1(CX3CR1),and HBB in the POAG group was significantly up-regulated compared with the control group,while the expression of secreted phosphoprotein 1(SPP1)-(ITGA8+ITGB1),SPP1-(ITGA4+ITGB1),IGF2-IGF2R,CCL8-CCR1,and CCL8/26/24/2-ACKR2 in the POAG group was significantly down-regulated compared with the control group.The RNA-seq analysis results confirmed that the expression levels of HBB,HBD,HBA,and CD74 were higher in the POAG group than in the control group.Conclusion The up-regulation of MIF-CD74 and the down-regulation of SPP1-(ITGA8+ITGB1)and SPP1-(ITGA4+ITGB1)in trabecular meshwork tissues may participate in the fibrotic process,which may be a potential pathogenic mechanism of POAG.
作者
赵雅婷
赵春峰
王文晶
蒋晓迪
姜雅琴
ZHAO Yating;ZHAO Chunfeng;WANG Wenjing;JIANG Xiaodi;JIANG Yaqin(School of Clinical Medicine,Shandong Second Medical University,Weifang 261000,Shandong Province,China;Weifang Eye Hospital,Weifang 261041,Shandong Province,China)
出处
《眼科新进展》
CAS
北大核心
2025年第1期39-45,共7页
Recent Advances in Ophthalmology
基金
山东省医药卫生科技发展计划项目(编号:202007021388)。
关键词
开角型青光眼
RNA测序
单细胞分析
细胞间通信
巨噬细胞移动抑制因子
分泌型磷蛋白1
open-angle glaucoma
RNA sequencing
single-cell analysis
cellular communication
macrophage migration inhibitory factor
secreted phosphoprotein 1
