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Pathogenic Autoimmunity in Atherosclerosis Evolves from HSP60-Reactive CD4 + T Cells

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Abstract  

Clinical evidence suggests anti-Hsp60 antibodies could contribute to atherosclerosis (AS) development, with unclear mechanisms. This study aims to explore the role of anti-HSP60-mediated autoimmunity in AS progression. HSP60-MHC tetramers were used to characterize HSP60-specific CD4 + T cells and assess TCR responses in mice. These cells were transplanted into AS mice to examine immune cell differentiation and infiltration in plaques and blood. Mice were injected with recombinant HSP60 or anti-HSP60 sera to evaluate effects on plaque progression and macrophage activity. Experiments with muMT–/–Apoe–/– mice examined humoral immunity's role in this autoimmunity. HSP60-reactive CD4 + T cells in AS mice differentiated into follicular helper cells, not Th1/Th17. Anti-HSP60 treatments increased macrophage infiltration and M1 polarization, indicating an anti-HSP60-driven inflammatory progression, dependent on humoral immunity. Anti-HSP60 influences macrophage infiltration, polarization, and plaque formation via humoral immunity, shedding light on its potential role in AS progression.

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Data Availability

The data used to support the findings of this study are available from the corresponding author upon request.

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Authors

Contributions

Shixiang Wang and Youquan Chen conceived and designed the study. Shixiang Wang and Yongquan Chen did the main experiments, Danyan Zhou, Jiawei Zhang and Guofeng Guo interpreted the data and drafted the article. Youquan Chen was responsible for reagents and materials and revised the article critically. All authors had final approval of the submitted versions.

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Correspondence to Youquan Chen.

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This work has been approved by the ethical committees at The Third Affiliated Hospital of Guangzhou Medical University.

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Communicated by Associate Editor Junjie **ao oversaw the review of this article.

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Wang, S., Chen, Y., Zhou, D. et al. Pathogenic Autoimmunity in Atherosclerosis Evolves from HSP60-Reactive CD4 + T Cells. J. of Cardiovasc. Trans. Res. (2024). https://doi.org/10.1007/s12265-024-10516-8

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