Injectable and NIR-Responsive CDN-POM Hydrogels for Combined Non-Inflammatory Photo-immunotherapy

Hailong Jiang, Die Liu, Jianing Wang,Jingchao Li, Xinrui Pang,Ke Zhang,Hong Shan

crossref(2024)

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摘要
Abstract Similar to clinically applied thermal ablation techniques, the cellular necrosis that occurs during photothermal tumor therapy (PTT) can induce inflammatory response, severely compromising the therapeutic efficacy and clinical translation of PTT. Inspired by the remarkable ROS-scavenging activity and high photothermal efficiency of molybdenum-based polyoxometalate (POM) and immunostimulatory effect of Cyclic dinucleotides (CDNs), a NIR-responsive and injectable DNA-mediated hybrid hydrogel (CDN-POM) is developed. The hydrogels have superior photothermal efficiency (43.41%) to POM, impressive anti-inflammatory capability and prolonged intratumoral CDN-releasing behavior, thus enabling synergistic anti-tumor therapeutic outcomes. Meanwhile, local treatment induced by CDN-POM hydrogels displays minimal side effects on normal tissue. Taking advantage of the high phototherapeutic effect, ROS-scavenging activity and sustained CDN release of CDN-POM hydrogels, a novel combined approach that integrates the photothermal and immunotherapy of breast tumor is successfully pioneered.
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