摘要
目的 揭示心力衰竭(HF)与血管性痴呆(VaD)的共病机制,挖掘跨器官治疗靶点及心脑协同保护的天然化合物。方法 使用Seurat对GEO数据库中8例单细胞数据进行聚类及注释,利用CellChat构建器官通讯网络并筛选前95%高置信配体-受体对进行KEGG富集分析,同时结合limma与CIBERSORT对70例常规转录组进行差异基因分析和免疫浸润评估。利用AutoDock Vina筛选TCMbank库31186种天然化合物,经分子动力学模拟验证其稳定性。结果单细胞图谱显示HF成纤维细胞占比43.75%(7亚群),VaD少突胶质细胞占76.57%(6亚群)。跨疾病分析表明HF成纤维细胞通过COLLAGEN信号、VaD胶质细胞通过SPP1信号驱动病理进程,共享PI3K-Akt和ECM-受体交互通路。鉴定出HF特征基因TNXB/THBS4/COL1A2,VaD特征基因SPP1/PDGFC/TGFA,联合分析得出FOXC1为共病核心转录因子。免疫微环境显示B细胞普遍激活。筛选出的8种FOXC1抑制剂中,青黛酮(Qingdainone)的结合最优[亲和力:-9.0 kcal/mol, RMSD:(0.2±0.06)nm]。结论 该研究阐明HF与VaD的纤维化-神经炎症共病机制,发现了靶向FOXC1的天然抑制剂青黛酮,为共病治疗药物研发提供了理论依据。
Objective To investigate shared mechanisms and therapeutic targets between heart failure(HF)and vascular de-mentia(VaD),and identify natural compounds for dual-organ protection.Methods Single-cell data(8 samples)from GEO were processed via Seurat for clustering.Through CellChat,inter-organ communication was constructed,and top 95%ligand-receptor pairs were analyzed by KEGG enrichment.Bulk RNA-seq(70 samples)underwent differential gene(limma)and immune infiltra-tion(CIBERSORT)analyses.31186 compounds from TCMbank were screened by AutoDock Vina,followed by molecular dynam-ics validation.Results HF fibroblasts(43.75%,7 subclusters)and VaD oligodendrocytes(76.57%,6 subclusters)dominated re-spective tissues.Cross-disease integration revealed HF-driven fibrosis(COLLAGEN)and VaD-associated neuroinflammation(SPP1),converging on PI3K-Akt and ECM pathways.HF-specific markers(TNXB/THBS4/COL1 A2)and VaD signatures(SPP1/PDGFC/TGFA)were identified,with FOXC1 identified as a shared transcriptional regulator.B cell activation character-ized immune dysregulation.Among 8 FOXC1 inhibitors,Qingdainone showed optimal bindingLaffinity:-9.0 kcal/mol;RMSD:(0.2±0.06)nmJ.Conclusion This study uncovers fibrosis-neuroinflammation crosstalk in HF-VaD comorbidity and proposes Qingdainone as a FOXC1-targeting therapeutic candidate.
作者
夏天骄
张添琦
王碧洁
张希源
曾巧春
汪诗娆
曹晓璐
王江友
Xia Tianjiao;Zhang Tianqi;Wang Bijie(Environmental Toxicology Laboratory,Hubei Province Key Laboratory of Occupational Hazard Identification and Control,School of Medicine,Wuhan University of Science and Technology,Wuhan 430065,China)
出处
《华中科技大学学报(医学版)》
北大核心
2025年第4期498-506,共9页
Acta Medicinae Universitatis Scientiae et Technologiae Huazhong
基金
国家自然科学基金资助项目(No.81801307)
武汉亚心总医院科研创新基金资助(No.2022KYCX1-A01)
职业危害识别与控制湖北省重点实验室联合基金资助项目(No.JF2023-K05)
湖北省卫生健康委员会青年人才项目(No.WJ2023Q018)。
