In adaptive immunity, effector T cells, especially Th17 cells, lead to the pathogenesis of cardiac fibrosis, including the distal fibrosis and scar formation. Cardiomyocytes protectors, Treg cells, inhibit reduce the inflammatory response, then directly trigger the regeneration of local progenitor cell via IL-10.
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Sun, K., Li, Y., & Jin, J. (2021). A double-edged sword of immuno-microenvironment in cardiac homeostasis and injury repair. Signal Transduction and Targeted Therapy, 6(1), 1–16. https://doi.org/10.1038/s41392-020-00455-6 Cite