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September 28, 2025Inorganic Chemistry

Type I Rhodamine-Sensitized Iridium(III) Complex Photosensitizers Activate Pyroptosis for Hypoxic Photodynamic Immunotherapy

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Authors

DSDongliang ShiAlpha Therm (Germany)XZXianming ZhangNortheast Agricultural UniversitySWSiye WuUniversity of Toronto

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Implication

Synthesized type I photosensitizers activate pyroptosis in tumors, highlighting potential in hypoxic photodynamic immunotherapy.

Key Points

  • Type I photosensitizers induce pyroptosis in CT26 cells, leading to tumor ablation and a robust immune response.
  • Ir3 demonstrates an IC50 of 0.46 μM under hypoxia, significantly enhancing superoxide radical production.
  • Synthesis utilized a donor-acceptor strategy in cyclometalated Ir(III) complexes to improve phototoxicity substantially.
  • Findings imply a new pathway for designing hypoxia-tolerant photosensitizers for effective cancer treatment.

Cite This Study

Shi et al. (2025) studied this question.

synapsesocial.com/papers/68d9052141e1c178a14f519fhttps://doi.org/10.1021/acs.inorgchem.5c03280
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