Extracellular vesicle signaling in regulatory T cell biology: From immune suppression to microenvironmental crosstalk.
Regulatory T cells (Tregs) are essential for maintaining immune homeostasis, yet classical suppressive mechanisms alone do not fully explain how tolerance is propagated across tissues and sustained over time. Extracellular vesicles (EVs), particularly exosome-enriched small EVs, have emerged as an important additional...