Upregulated by Deficiency Aggravates Acute Myocardial Infarction NETosis
Overview
Authors
Affiliations
Neutrophils are mobilized and recruited to the injured heart after myocardial infarction, and neutrophil count has been clinically implicated to be associated with coronary disease severity. Histidine decarboxylase (HDC) has been implicated in regulating reactive oxidative species (ROS) and the differentiation of myeloid cells. However, the effect of HDC on neutrophils after myocardial infarction remains unclear. Here, we found that neutrophils were disorderly recruited into the ischemic injured area of the myocardium of deficiency ( ) mice. Moreover, deficiency led to attenuated adhesion but enhanced migration and augmented ROS/neutrophil extracellular traps (NETs) production in neutrophils. mouse-derived NETs promoted cardiomyocyte death and cardiac fibroblast proliferation/migration. Furthermore, protein arginine methyltransferase 1 (PRMT1) was increased in mouse-derived neutrophils but decreased with exogenous histamine treatment. Its expression could be rescued by blocking histamine receptor 1 (H1R), inhibiting ATP synthesis or reducing SWItch/sucrose non fermentable (SWI/SNF) chromatin remodeling complex. Accordingly, histamine or MS023 treatment could decrease ROS and NETs , and ameliorated cardiac function and fibrosis, along with the reduced NETs in plasma . Together, our findings unveil the role of HDC in NETosis by histamine-H1R-ATP-SWI/SNF-PRMT1-ROS signaling and provide new biomarkers and targets for identifying and tuning the detrimental immune state in cardiovascular disease.
Complex regulation of cardiac fibrosis: insights from immune cells and signaling pathways.
Rao W, Li D, Zhang Q, Liu T, Gu Z, Huang L J Transl Med. 2025; 23(1):242.
PMID: 40022104 PMC: 11869728. DOI: 10.1186/s12967-025-06260-5.
Effect of inflammatory factors on myocardial infarction.
Zeng Q, Xu T, Luo Z, Zhou H, Duan Z, Xiong X BMC Cardiovasc Disord. 2024; 24(1):538.
PMID: 39375629 PMC: 11457337. DOI: 10.1186/s12872-024-04122-4.
The emerging role of neutrophil extracellular traps in ulcerative colitis.
Long D, Mao C, Xu Y, Zhu Y Front Immunol. 2024; 15:1425251.
PMID: 39170617 PMC: 11335521. DOI: 10.3389/fimmu.2024.1425251.
Protein Arginine Methyltransferases: Emerging Targets in Cardiovascular and Metabolic Disease.
Zhang Y, Wei S, Jin E, Jo Y, Oh C, Bae G Diabetes Metab J. 2024; 48(4):487-502.
PMID: 39043443 PMC: 11307121. DOI: 10.4093/dmj.2023.0362.
The cGAS-STING pathway in cardiovascular diseases: from basic research to clinical perspectives.
An C, Li Z, Chen Y, Huang S, Yang F, Hu Y Cell Biosci. 2024; 14(1):58.
PMID: 38720328 PMC: 11080250. DOI: 10.1186/s13578-024-01242-4.