Abstract:Post-myocardial infarction ventricular remodeling can lead to heart failure and poor outcomes, and its mechanisms mainly involve dynamic regulation of immune cells and their interactions with the microenvironment. However, the dynamic evolutionary process and functional diversity of immune cell subpopulations still require further investigation. The development of Single-cell sequencing technology has revealed the functional diversity exhibited by immune cell subpopulations at different stages of injury. These subpopulations crucially determine the final outcomes of inflammation resolution and tissue repair through core mechanisms such as cell-cell interactions, metabolic reprogramming, and signaling pathways regulation. In the future, it is still necessary to integrate advanced technologies such as spatial multiomics and nanodelivery to overcome translational bottlenecks. This article comprehensively summarizes the roles of key immune cell subpopulations and their molecular mechanisms in ventricular remodeling after myocardial infarction, and discusses therapeutic strategies for targeted immune regulation. 〖JP