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He, Shasha; Jiang, Yuyan; Li, Jingchao; Pu, Kanyi
Angewandte Chemie International Edition, June 22, 2020, Letnik: 59, Številka: 26Journal Article
This study reports the development of iron‐chelated semiconducting polycomplex nanoparticles (SPFeN) for photoacoustic (PA) imaging‐guided photothermal ferrotherapy of cancer. The hybrid polymeric nanoagent comprises a ferroptosis initiator (Fe3+) and an amphiphilic semiconducting polycomplex (SPC) serving as both the photothermal nanotransducer and iron ion chelator. By virtue of poly(ethylene glycol) (PEG) grafting and its small size, SPFeN accumulates in the tumor of living mice after systemic administration, which can be monitored by PA imaging. In the acidic tumor microenvironment, SPFeN generates hydroxyl radicals, leading to ferroptosis; meanwhile, under NIR laser irradiation, it generates localized heat to not only accelerate the Fenton reaction but also implement photothermal therapy. Such a combined photothermal ferrotherapeutic effect of SPFeN leads to minimized dosage of iron compared to previous studies and effectively inhibits the tumor growth in living mice, which is not possible for the controls. Iron‐chelated semiconducting polycomplex nanoparticles (SPFeN) with theability to induce ferroptosis and a near‐infrared photothermal effect were developed for photoacoustic imaging‐guided combination cancer therapy.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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