Fig. 13
a Synthesis of DPPA-RRPNP@Fe2O3. b DPPA-RRPNP@Fe2O3 synergizes ROS scavenging, immune checkpoint blockade, and chemo-ferroptosis-mediated antitumor immunity. c Flow cytometry analysis of PD-L1 expression on tumor cells (mean ± SD, n = 3). Tumor-infiltrating d CD3+CD8+ and e CD3+CD4+ T cell quantification across treatments. f Lung metastasis detection via luciferase bioluminescence imaging at day 31. Adapted with permission from [118], copyright 2024 Wiley–VCH GmbH, Weinheim