Single‐cell atlas of peripheral blood by CyTOF revealed peripheral blood immune cells metabolic alterations and neutrophil changes in intracranial aneurysm rupture

• Published in: MedComm (2020) Vol. 5; no. 8; pp. e637 - n/a
• Main Authors: Ya, Xiaolong, Liu, Chenglong, Ma, Long, Ge, Peicong, Xu, Xiaoxue, Zheng, Zhiyao, Mou, Siqi, Wang, Rong, Zhang, Qian, Ye, Xun, Zhang, Dong, Zhang, Yan, Wang, Wenjing, Li, Hao, Zhao, Jizong
• Format: Journal Article
• Language: English
• Published: China John Wiley & Sons, Inc 01.08.2024; John Wiley and Sons Inc; Wiley
• Subjects: Aneurysms; CyTOF; Enzymes; heterogeneity of neutrophils; immune metabolism; intracranial aneurysms; Metabolism; Original; intracranial aneurysms; heterogeneity of neutrophils; immune metabolism; CyTOF
• ISSN: 2688-2663; 2688-2663
• DOI: 10.1002/mco2.637

Previous studies have found that the peripheral immune environment is closely related to the occurrence and development of intracranial aneurysms. However, it remains unclear how the metabolism of peripheral blood mononuclear cells (PBMCs) and the composition of polymorphonuclear leukocytes (PMNs) changes in the process of intracranial aneurysm rupture. This study utilized cytometry by time of flight technology to conduct single‐cell profiling analysis of PBMCs and PMNs from 72 patients with IAs. By comparing the expression differences of key metabolic enzymes in PBMCs between patients with ruptured intracranial aneurysms (RIAs) and unruptured intracranial aneurysms, we found that most PBMCs subsets from RIA group showed upregulation of rate‐limiting enzymes related to the glycolytic pathway. By comparing the composition of PMNs, it was found that the proinflammatory CD101+HLA DR+ subsets were increased in the RIA group, accompanied by a decrease in the anti‐inflammatory polymorphonuclear myeloid‐derived suppressor cells. In conclusion, this study showed the changes in the peripheral immune profile of RIAs, which is helpful for our understanding of the mechanisms underlying peripheral changes and provides a direction for future related research. Immune cell metabolism: Explore the metabolic changes of peripheral immune cells after intracranial aneurysm rupture. Neutrophil heterogeneity: To explore the changes in the composition and function of peripheral blood neutrophils after intracranial aneurysm rupture. Therapeutic insights: Understanding the mechanism of peripheral immune dysfunction in patients after rupture.