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October 5, 2025Journal of Medicinal Chemistry

Targeted Photoredox System under a Hypoxic Environment to Evoke Photodynamic Immunotherapy

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Authors

NXNa XuHFHongbao FangZZZhirong Zhu

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Overview

This research demonstrates that a novel type-I photosensitizer produces oxygen radicals in hypoxic tumors, highlighting its potential in immunotherapy.

Key Points

  • Type-I photosensitizers like BDP-Ir-bpt can effectively produce oxygen radicals even in low-oxygen environments.
  • The study shows significant intracellular production of O2–• and •OH under hypoxic conditions using a new photoredox system.
  • Immunotherapy responses were triggered following lysosomal rupture and the release of cathepsin B, leading to pyroptosis.
  • The work emphasizes the importance of rational design in developing biocompatible photosensitizers for effective cancer therapy.

Cite This Study

Xu et al. (2025) studied this question.

synapsesocial.com/papers/68e28310dcef4a166ce03cd9https://doi.org/10.1021/acs.jmedchem.5c01579
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Type I Rhodamine-Sensitized Iridium(III) Complex Photosensitizers Activate Pyroptosis for Hypoxic Photodynamic Immunotherapy2025
  2. 2Molecular Engineering of Pure Superoxide Radical Photogenerator for Hypoxia‐Tolerant Tumor Theranostics2024 · 11 citations
  3. 3Combining Type I&II Photosensitizer With Hypoxia‐Activated Prodrug Enables Oxygen‐Unrestricted Synergistic Photocatalytic Therapy2026
  4. 4Totally Caged Type I Pro‐Photosensitizer for Oxygen‐Independent Synergistic Phototherapy of Hypoxic Tumors2024 · 10 citations
  5. 5Utilizing Rationally Designed Photosensitizers to Drive Divergent Immunogenic Cell Death in Photoimmunotherapy2026 · 1 citations