CD36-mediated ferroptosis destabilizes CD4+ T cell homeostasis in acute Stanford type-A aortic dissection

作者：Hui Li, Pengfei Wang, Wei Luo, Di Fu, Weiyun Shen, Yanling Zhang, Shuai Zhao, Ru‐Ping Dai · 发表于：Cell Death and Disease · 年份：2024 · DOI：10.1038/s41419-024-07022-9 · 被引用次数：20 · 研究领域：Aortic aneurysm repair treatments、Immune cells in cancer、Ferroptosis and cancer prognosis

Abstract Acute type A aortic dissection (ATAAD) is a lethal pathological process within the aorta with high mortality and morbidity. T lymphocytes are perturbed and implicated in the clinical outcome of ATAAD, but the exact characteristics of T cell phenotype and its underlying mechanisms in ATAAD remain poorly understood. Here we report that CD4 + T cells from ATAAD patients presented with a hypofunctional phenotype that was correlated with poor outcomes. Whole transcriptome profiles showed that ferroptosis and lipid binding pathways were enriched in CD4 + T cells. Inhibiting ferroptosis or reducing intrinsic reactive oxygen species limited CD4 + T cell dysfunction. Mechanistically, CD36 was elevated in CD4 + T cells, whose blockade effectively alleviated palmitic acid-induced ferroptosis and CD4 + T cell hypofunction. Therefore, targeting the CD36-ferroptosis pathway to restore the functions of CD4 + T cells is a promising therapeutic strategy to improve clinical outcomes in ATAAD patients.