articleJournal of the American Chemical SocietyJan 24, 2025Closed access

A Second Near-Infrared Window-Responsive Metal–Organic-Framework-Based Photosensitizer for Tumor Immunotherapy via Synergistic Ferroptosis and STING Activation

Nanyang Technological University · Chinese PLA General Hospital · +4 more institutions

PubMed
Indexed incrossrefpubmed

Abstract

Photodynamic therapy (PDT) holds promise as a cancer treatment modality due to its potential for enhanced therapy precision and safety. To enhance deep tissue penetration and minimize tissue adsorption and phototoxicity, developing photosensitizers activated by second near-infrared window (NIR-II) light shows significant potential. However, the efficacy of PDT is often impeded by tumor microenvironment hypoxia, primarily caused by irregular tumor vasculature. Fortunately, the stimulator of interferon genes (STING) pathway, known for immune activation, has been linked to vasculature normalization. In this study, we developed a nanoplatform (Fe-THBQ/SR) by loading a STING agonist (SR-717) into an…

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