The study contributes to the understanding of CD4+AT2R+ cell function after myocardial infarction (MI). This potential novel T cell subset, which expresses FoxP3 and various cytokines improves cardiac function and reduces infarct size. Results indicate that the CD4+AT2R+ T cells might be included in therapeutic approaches for the treatment of cardiac diseases, due to its upregulation in the infarcted state. The application of this T cell subset may improve the healing process of compromised heart tissue and contribute to a better quality of life in affected patients.