Functionalized neutrophil nanovesicles for targeted photodynamic immunotherapy and potentiation of checkpoint blockade in colorectal cancer.
Colorectal cancer (CRC) patients with microsatellite-stable tumors typically resist immune checkpoint blockade (ICB) due to an immunosuppressive "cold" microenvironment. Photodynamic therapy (PDT) generates reactive oxygen species (ROS) to ablate tumor cells and induce immunogenic cell death (ICD), potentiating antitum...