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- W4386157343 abstract "The therapeutic effect of cancer immunotherapy is restrained by limited patient response rate caused by ‘cold’ tumors with an intrinsically immunosuppressive tumor microenvironment (TME). Activating stimulator of interferon genes (STING) confers promising antitumor immunity even in ‘cold’ tumors, but the further promotion of STING agonists is hindered by undesirable toxicity, low specificity and lack of controllability. Herein, an ultrasound-controllable cGAS-STING amplifying nanoagonist was constructed by coordinating mitochondria-targeting ligand triphenylphosphonium (TPP) to sonodynamic cobalt organic framework nanosheets (TPP@CoTCPP). The Co ions specifically amplify STING activation only when cytosolic mitochondrial DNA leakage is caused by sonocatalysis-induced ROS production and sensed by cGAS. A series of downstream innate immune proinflammatory responses induced by local cGAS-STING pathway activation under spatiotemporal ultrasound stimulation efficiently prime the antitumor T-cell response against bone metastatic tumor, a typical immunosuppressive tumor. We also found that the coordination of TPP augments the sonodynamic effect of CoTCPP nanosheets by reducing the band gap, improving O2 adsorption and enhancing electron transfer. Overall, our study demonstrates that the targeted and amplified cGAS-STING activation in cancer cell controlled by spatiotemporal ultrasound irradiation boosts high-efficiency sonodynamic-ionicimmunotherapy against immunosuppressive tumor." @default.
- W4386157343 created "2023-08-26" @default.
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- W4386157343 date "2023-11-01" @default.
- W4386157343 modified "2023-10-14" @default.
- W4386157343 title "Sonodynamic amplification of cGAS-STING activation by cobalt-based nanoagonist against bone and metastatic tumor" @default.
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- W4386157343 doi "https://doi.org/10.1016/j.biomaterials.2023.122295" @default.
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- W4386157343 hasPublicationYear "2023" @default.
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