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Get Free AccessUltrasound (US)-triggered sonodynamic therapy (SDT) based on semiconductor nanomaterials has attracted considerable attention for cancer therapy. However, most inorganic sonosensitizers suffer from low efficiency due to the rapid recombination of electron-hole pairs. Herein, the Cu2-xO-BaTiO3 piezoelectric heterostructure was fabricated as a sonosensitizer and chemodynamic agent, simultaneously, for improving reactive oxygen species (ROS) generation and cancer therapeutic outcome. Under US irradiation, the Cu2-xO-BaTiO3 heterojunction with a piezotronic effect exhibits high-performance singlet oxygen (1O2) and hydroxyl radical (•OH) generation to enhance SDT. Moreover, it possesses Fenton-like reaction activity to convert endogenous H2O2 into •OH for chemodynamic therapy (CDT). The integration of SDT and CDT substantially boosts ROS generation and cellular mitochondria damage, and the in vitro and in vivo results demonstrate high cytotoxicity and tumor inhibition on murine refractory breast cancer. This work realizes improvement in cancer therapy using piezoelectric heterostructures with piezotronic effects.
Yunchao Zhao, Shaobo Wang, Yiming Ding, Zeyu Zhang, Tian Huang, Yalong Zhang, Xingyi Wan, Zhong Lin Wang, Linlin Li (2022). Piezotronic Effect-Augmented Cu<sub>2–<i>x</i></sub>O–BaTiO<sub>3</sub> Sonosensitizers for Multifunctional Cancer Dynamic Therapy. , 16(6), DOI: https://doi.org/10.1021/acsnano.2c01968.
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Type
Article
Year
2022
Authors
9
Datasets
0
Total Files
0
Language
en
DOI
https://doi.org/10.1021/acsnano.2c01968
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