In hypoxic liver cancer stem cell-like C5WN1 cells, SorPLB@Gal-PM elicits markedly enhanced intracellular ROS upon irradiation, showing approximately 3.4-fold and 2.9-fold higher DCFH-DA signals than SorPLB@Gal-PCN-224 and PM, respectively, accompanied by downregulation of hypoxia-inducible factor-1α (HIF-1α) and glutathione peroxidase 4 (GPX4). Here, GAL is linked to liver cancer.