Nanoparticles that modulate immune cells - an important strategy for the future treatment of tumors

T cells proliferation or activity and reducing the number of Tregs (including nanoparticles composed of liposomes, gels, cerium, and selenium, hyaluronic acid-modified nanoparticles, nanocapsules, nanovesicles, other material nanoparticles, and nanoparticles combined with other treatment modalities), besides, some nanoparticles can exert anti-tumor activity by regulating two or more types of immune cells in the TME. In short, nanoparticles targeting immune cells will become an important strategy in tumor treatment based on the advantages of nanoparticles in enhancing efficacy and reducing toxicity in tumor therapy, as well as the important role of immune cells in tumor occurrence and development. In this article, we will provide a detailed introduction to nanoparticles that exert anti-tumor activity by regulating immune cells in the TME and briefly introduce the mechanisms by which nanoparticles regulate immune cells.