Figure 9.

a) Schematic illustration of preparation of vanadyl nanocomplex (STVN), and STVN‐mediated PTT enhances immunogenicity for systemic antitumor immune responses. Reproduced with permission.^{[ 151 ]} Copyright 2021, Elsevier. b) Schematic illustration of MPNs coordinated with TA and metal‐ion complex of Fe₃₊/Mn²⁺ loaded with a PD‐L1 inhibiting DNAzyme (DZ@TFM) for PTT‐enhanced cyclically amplified tumor ferroptosis–immunotherapy. Reproduced with permission.^{[ 152 ]} Copyright 2021, Wiley‐VCH. c) Schematic illustration of semiconductor polymers encapsulated Fe³⁺ and exosome inhibitor GW4869 (PFG MPNs) for phototheranostic effect, relief of exosomal immunosuppression, ferroptosis enhancement, and immune stimulation. Reproduced with permission.^{[ 153 ]} Copyright 2022, American Chemical Society. d) PFGs combined with PD‐L1 checkpoint blockade for immune response enhancement inhibiting tumor proliferation and metastasis. Reproduced with permission.^{[ 155 ]} Copyright 2020, Wiley‐VCH.