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- W4294805107 abstract "Increasing evidence has pointed to the important function of T cells in controlling immune homeostasis and pathogenesis after myocardial infarction (MI), although the underlying molecular mechanisms remain elusive. In this study, a broad analysis of immune markers in 283 patients revealed significant CD69 overexpression on Tregs after MI. Our results in mice showed that CD69 expression on Tregs increased survival after left anterior descending (LAD) coronary artery ligation. Cd69-/- mice developed strong IL-17+ γδT cell responses after ischemia that increased myocardial inflammation and, consequently, worsened cardiac function. CD69+ Tregs, by induction of AhR-dependent CD39 ectonucleotidase activity, induced apoptosis and decreased IL-17A production in γδT cells. Adoptive transfer of CD69+ Tregs into Cd69-/- mice after LAD ligation reduced IL-17+ γδT cell recruitment, thus increasing survival. Consistently, clinical data from 2 independent cohorts of patients indicated that increased CD69 expression in peripheral blood cells after acute MI was associated with a lower risk of rehospitalization for heart failure (HF) after 2.5 years of follow-up. This result remained significant after adjustment for age, sex, and traditional cardiac damage biomarkers. Our data highlight CD69 expression on Tregs as a potential prognostic factor and a therapeutic option to prevent HF after MI." @default.
- W4294805107 created "2022-09-06" @default.
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- W4294805107 date "2022-11-01" @default.
- W4294805107 modified "2023-09-26" @default.
- W4294805107 title "CD69 expression on regulatory T cells protects from immune damage after myocardial infarction" @default.
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- W4294805107 doi "https://doi.org/10.1172/jci152418" @default.
- W4294805107 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36066993" @default.
- W4294805107 hasPublicationYear "2022" @default.
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