{"title":"ACKR1<sup>hi</sup>ECs Promote Aortic Dissection Through Adjusting Macrophage Behavior.","authors":"Yayu Wang, Xiong Jia, Yifei Zhang, Bin Zhang, Yazhe Zhou, Xiaoru Li, Xiaoying Zhu, Jinquan Xia, Jun Ren, Chang Zou, Qijun Zheng","doi":"10.1161/CIRCRESAHA.124.325458","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Type A aortic dissection (TAAD) is a life-threatening condition characterized by complex pathophysiology, in which macrophages play a critical but not yet fully understood role. This study focused on the role of endothelial cells with elevated expression of ACKR1 (atypical chemokine receptor 1) and their interaction with proinflammatory macrophages in TAAD development.</p><p><strong>Methods and results: </strong>Single-cell transcriptomic analysis of human aortic tissues revealed increased populations of endothelial cells exhibiting high ACKR1 expression and proinflammatory macrophages in TAAD samples. Both clinical and animal studies revealed that ACKR1 expression levels were strongly linked to TAAD severity. Gain- and loss-of-function studies demonstrated that ACKR1 promotes TAAD progression. Specific knockdown of ACKR1 in endothelial cells suppressed the NF-κB (nuclear factor-κB) signaling pathway and SPP1 (secreted phosphoprotein 1) expression, leading to reduced macrophage migration and proinflammatory polarization, which subsequently inhibited TAAD development. Conversely, ACKR1 overexpression accelerated TAAD progression. Notably, molecular docking and comprehensive evaluation identified amikacin as a potential novel modulator of ACKR1. Extensive in vitro and in vivo studies demonstrated that amikacin can regulate macrophage behavior through the ACKR1/NF-κB/SPP1 signaling pathway, thereby attenuating TAAD progression and improving survival rates in TAAD mice.</p><p><strong>Conclusions: </strong>This study reveals how endothelial cells exhibiting high ACKR1 expression modulate macrophage migration and proinflammatory polarization through the ACKR1/NF-κB/SPP1 signaling pathway, a crucial mechanism in TAAD progression. Targeting ACKR1 through both functional and pharmacological approaches effectively suppressed TAAD progression and extended survival in TAAD mice, offering promising new intervention strategies for clinical evaluation.</p>","PeriodicalId":10147,"journal":{"name":"Circulation research","volume":" ","pages":""},"PeriodicalIF":16.5000,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Circulation research","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1161/CIRCRESAHA.124.325458","RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CARDIAC & CARDIOVASCULAR SYSTEMS","Score":null,"Total":0}
引用次数: 0
Abstract
Background: Type A aortic dissection (TAAD) is a life-threatening condition characterized by complex pathophysiology, in which macrophages play a critical but not yet fully understood role. This study focused on the role of endothelial cells with elevated expression of ACKR1 (atypical chemokine receptor 1) and their interaction with proinflammatory macrophages in TAAD development.
Methods and results: Single-cell transcriptomic analysis of human aortic tissues revealed increased populations of endothelial cells exhibiting high ACKR1 expression and proinflammatory macrophages in TAAD samples. Both clinical and animal studies revealed that ACKR1 expression levels were strongly linked to TAAD severity. Gain- and loss-of-function studies demonstrated that ACKR1 promotes TAAD progression. Specific knockdown of ACKR1 in endothelial cells suppressed the NF-κB (nuclear factor-κB) signaling pathway and SPP1 (secreted phosphoprotein 1) expression, leading to reduced macrophage migration and proinflammatory polarization, which subsequently inhibited TAAD development. Conversely, ACKR1 overexpression accelerated TAAD progression. Notably, molecular docking and comprehensive evaluation identified amikacin as a potential novel modulator of ACKR1. Extensive in vitro and in vivo studies demonstrated that amikacin can regulate macrophage behavior through the ACKR1/NF-κB/SPP1 signaling pathway, thereby attenuating TAAD progression and improving survival rates in TAAD mice.
Conclusions: This study reveals how endothelial cells exhibiting high ACKR1 expression modulate macrophage migration and proinflammatory polarization through the ACKR1/NF-κB/SPP1 signaling pathway, a crucial mechanism in TAAD progression. Targeting ACKR1 through both functional and pharmacological approaches effectively suppressed TAAD progression and extended survival in TAAD mice, offering promising new intervention strategies for clinical evaluation.
期刊介绍:
Circulation Research is a peer-reviewed journal that serves as a forum for the highest quality research in basic cardiovascular biology. The journal publishes studies that utilize state-of-the-art approaches to investigate mechanisms of human disease, as well as translational and clinical research that provide fundamental insights into the basis of disease and the mechanism of therapies.
Circulation Research has a broad audience that includes clinical and academic cardiologists, basic cardiovascular scientists, physiologists, cellular and molecular biologists, and cardiovascular pharmacologists. The journal aims to advance the understanding of cardiovascular biology and disease by disseminating cutting-edge research to these diverse communities.
In terms of indexing, Circulation Research is included in several prominent scientific databases, including BIOSIS, CAB Abstracts, Chemical Abstracts, Current Contents, EMBASE, and MEDLINE. This ensures that the journal's articles are easily discoverable and accessible to researchers in the field.
Overall, Circulation Research is a reputable publication that attracts high-quality research and provides a platform for the dissemination of important findings in basic cardiovascular biology and its translational and clinical applications.