Light-activatable nanomedicine for cancer theranostics. A) A light-activatable amphiphilic dendrimer, LIA, as a fluorescence imaging-assisted immunological adjuvant. a) Schematic of the procedure for preparing LIA and triggering its adjuvant function. b) Fluorescence images of 4T1 tumor models treated with free Ce6 and LIA. c) H&E staining of lung tissues after different treatments, and black circles represented metastatic nodules, scale bar: 500 μm. Reproduced with permission 168. Copyright 2021 the Authors, published by Springer Nature. B) A light-responsive liquid metal (LM)-based immunostimulator for NIR-light triggered PTT and release of immunomodulators (anti-PD-L1 and imiquimod (IMIQ)). a) Scheme for preparation and structure of anti-PD-L1-PEG-IMIQ-ICG-LM. b) Fluorescence images of CT26-bearing mice and their resected organs after injection of this theranostic nanomedicine. c) Survival rates of the murine tumor model after different treatments. Reproduced with permission 169. Copyright 2023, published by Wiley-VCH.