Abstract
Focal inflammation and arterial damage driven by macrophages are key pathogenic processes in atherosclerosis. However, the mechanisms that regulate these processes remain poorly understood. In this study, we demonstrate that formyl peptide receptor 1 (FPR1) agonist, a mitochondrial N-formyl peptide, is elevated in the blood of patients with atherosclerosis and correlates with carotid stenosis. Macrophages expressing FPR1 were found in atherosclerotic lesions. Conditional deletion of Fpr1 in macrophages reduced plaque formation, local inflammation, and aortic atherosclerosis in apolipoprotein E (ApoE)−/− mice. FPR1 activates protein kinase C (PKC) in macrophages, promoting the production of reactive oxygen species (ROS), tumor necrosis factor alpha (TNF-α) and interleukin-1beta (IL-1β), which accelerates the apoptosis of endothelial cells and smooth muscle cells. To inhibit FPR1 bioactivity, we developed an antagonist, T0080. Therapeutic administration of T0080 attenuates atherosclerotic progression in ApoE−/− mice. Our findings highlight the pivotal role of FPR1 in macrophage-mediated atherosclerotic plaque formation and support further investigation of T0080-mediated FPR1 inhibition as a potential treatment for atherosclerosis.
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Data availability
RNA-Seq data were obtained from NCBI’s Gene Expression Omnibus (GEO) database (GEO GSE155512, https://www.ncbi.nlm.nih.gov). Codes were implemented in R (version R-4.4.1) and are deposited in GitHub - snowinghere/R-code-for-FPR1-in-atherosclerosis. All other data are available from the corresponding author upon reasonable request.
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Acknowledgements
We thank Drs. L. Zheng, M. Liu and Y. Zhu for fruitful discussions, and Dr. S.X. Shi for editorial assistance.
Funding
This work was supported by the National Natural Science Foundation of China (82471312, 82320108007 and 81830038) and Tianjin Science and Technology Commission Foundation (21JCYBJC00770).
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ZL, F-DS and SCJ formulated the conception and design of this study. YL, XZ, SW, YL, XT, XZ, YL and NY performed the experiments, YL, XZ, BG, F-DS, ZL and SW analyzed and interpreted the results. ZL, F-DS, YL, XZ and SCJ wrote and edited the manuscript.
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All experiments involving human tissue samples were approved by the Medical Ethics Committee of Tianjin Medical University General Hospital (Tianjin, China). All animal experiments were approved by the Laboratory Animal Management and Ethics Committee of Tianjin Medical University General Hospital (Tianjin, China) and were performed in accordance with the “China’s Guidelines on Welfare and Ethical Review for Laboratory Animals”.
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Li, YJ., Zhao, X., Wu, S. et al. Formyl peptide receptor 1 and its antagonist T0080 in atherosclerosis. Cell Death Differ 32, 1859–1870 (2025). https://doi.org/10.1038/s41418-025-01506-7
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DOI: https://doi.org/10.1038/s41418-025-01506-7


