Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 32, Pages 13557-13561Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202004894
Keywords
metal-organic frameworks; nanoparticles; multimodal imaging; oxygen generation; sonodynamic therapy
Categories
Funding
- Fundamental Research Funds for the Central Universities [XK1802-8, buctrc201915]
- National Natural Science Foundation of China [21822802, 51772018, 51572271, 81671800]
- National Basic Research Program of China [2016YFA0201500]
- Fundamental Research Funds for the Central Universities, Research projects on biomedical trans-formation of China-Japan Friendship Hospital [PYBZ1825]
- Natural Science Foundation of Beijing Municipality [7172204]
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The high reactive oxygen species (ROS) generation ability and simple construction of sonosensitizer systems remain challenging in sonodynamic therapy against the hypoxic tumor. In this work, we rationally prepared MOF-derived double-layer hollow manganese silicate nanoparticle (DHMS) with highly effective ROS yield under ultrasound irradiation for multimodal imaging-guided sonodynamic therapy (SDT). The presence of Mn in DHMS increased ROS generation efficiency because it could be oxidized by holes to improve the electron-hole separation. Moreover, DHMS could produce oxygen in the tumor microenvironment, which helps overcome the hypoxia of the solid tumor and thus enhance the treatment efficiency. In vivo experiments demonstrated efficient tumor inhibition in DHMS-mediated SDT guided by ultrasound and magnetic resonance imaging. This work presents a MOF-derived nanoparticle with sonosensitive and oxygen generating ability, which provides a promising strategy for tumor hypoxia in SDT.
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