炎症
趋化因子
免疫系统
单核细胞
病理生理学
细胞
细胞生物学
基因表达
生物
人脑
电池类型
基因
免疫学
医学
癌症研究
病理
神经科学
遗传学
作者
Hang Ji,Yue Li,Haogeng Sun,Ruiqi Chen,Ran Zhou,Anqi Xiao,Yongbo Yang,Rong Wang,Chao You,Yi Liu
出处
期刊:Cold Spring Harbor Laboratory - medRxiv
日期:2023-05-05
标识
DOI:10.1101/2023.05.03.23289486
摘要
Abstract Background Intracranial aneurysms (IA) is a common condition and may ultimately result in life-threatening hemorrhagic strokes. A precise understanding of the cellular and gene expression perturbations in human IA tissue may enlighten additional therapeutics for unruptured IA. Methods A total of 21,332 qualified cells were obtained from four cell-sparse ruptured and unruptured human IA tissues. Detailed cell atlas and dynamics, gene expression perturbations, and inflammation features were thoroughly investigated using multiple machine learning-based algorithms. Results Endothelial cells, smooth muscle cells (SMCs), fibroblasts and, for the first time, pericytes have been identified in human IA tissue. A significant proportion of immune cells are also identified, with the number of monocyte/macrophages and neutrophils being notably higher in ruptured IA. By leveraging external datasets, macrophages characterized by transcriptional activation of NF-κB and HIVEP2 is most strongly associated with IA rupture. Interestingly, the recruitment and activation of macrophages and their functional characteristics in terms of TNFα and chemokine production remain consistent between unruptured and ruptured IA. Conclusions This study provides insights into the pathophysiology and molecular underpinnings of the IA wall and may motivate novel therapeutic options for unruptured IA.
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