Synergistically Promoted Antitumor Photoimmunotherapy Using Immune-Stimulating Peach Gum Polysaccharides as Nanocarriers.

Nanomaterial-based mild photothermal therapy (mPTT, 42-45 °C) with controllable light-triggered thermal diffusion holds potential in reversing immunosuppressive microenvironments and activating antitumor immunity in tumors. However, the limited antitumor efficacy of mPTT alone always requires sophisticated synergistic strategies to promote its overall therapeutic outcome. Herein, we employ an immune-active natural polymer, peach gum polysaccharide (PGP), as the nanocarrier to encapsulate the photothermal reagent of TTQPL to yield PLA-T nanoparticles (NPs).