Unveiling nanoparticle-immune interactions: how super-resolution imaging illuminates the invisible.

Nanoparticles (NPs) have attracted considerable attention in nanomedicine, particularly in harnessing and manipulating immune cells. However, the current understanding of the interactions between NPs and immune cells at the nanoscale remains limited. Advancing this knowledge guides the design principles of NPs. This review offers a historical perspective on the synergistic evolution of immunology and optical microscopy, examines the current landscape of NP applications in immunology, and explores the advancements in super-resolution imaging techniques, which provide new insights into nanoparticle-immune cell interactions. Key findings from recent studies are discussed, along with challenges and future directions in this rapidly evolving field.