Endothelial progenitor cells in vascular remodeling

Abstract

The integrity of the vascular endothelium is fundamental to its barrier function, maintaining vascular homeostasis and microenvironmental stability, and serves as a prerequisite for preventing certain vascular diseases. After vascular integrity is compromised, endothelial progenitor cells (EPCs), a diverse population of progenitor cells with the capacity to develop into endothelial cells, can reconstruct blood vessels. This occurs primarily through two mechanisms: (1) direct integration into existing vessels for repair; and (2) paracrine secretion of proangiogenic factors to promote EPC mobilization and migration, regulate immune functions, and inhibit endothelial hyperplasia. This review aims to elucidate the mechanisms by which EPCs participate in vascular remodeling, and to discuss the latest advances in clinical translation strategies such as cell therapy, EPC-derived exosome therapy, and EPC functional modulation, as well as the current challenges in standardization and clinical application.

Keywords

Endothelial progenitor cell / vascular remodeling / paracrine effect / cell therapy / EPC-derived exosome

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