Stable black phosphorus/Bi2O3 heterostructures for synergistic cancer radiotherapy

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Hao Huang
  • Lizhen He
  • Wenhua Zhou
  • Guangbo Qu
  • Jiahong Wang
  • Na Yang
  • Jie Gao
  • Tianfeng Chen
  • Xue-Feng Yu

Detail(s)

Original languageEnglish
Pages (from-to)12-22
Journal / PublicationBiomaterials
Volume171
Online published13 Apr 2018
Publication statusPublished - Jul 2018

Abstract

X-ray induced photodynamic therapy (X-ray-PDT) is a promising approach for synergistic cancer radiotherapy and development of suitable radiosensitizers is highly desired. In this paper, we propose black phosphorus/Bi2O3 (BP/Bi2O3) heterostructures as efficient and biocompatible radiosensitizers for synergistic cancer radiotherapy. The heterostructures are synthesized by growth of ultrasmall Bi2O3 nanoparticles onto BP nanosheets. The Bi2O3 decoration inhibits the rapid degradation of BP nanosheets by occupation of the defect sites, and the synergistic effects of BP and Bi2O3 enable 1O2 overproduction under X-ray irradiation. This X-ray-PDT effect of the BP/Bi2O3 nanosheets enhances the radiotherapy activity towards cancer cells by inducing cell apoptosis and cycle arrest. In vivo treatment of melanoma conducted on a clinical radiotherapeutic instrument demonstrates that the BP/Bi2O3 sensitized radiotherapy inhibits tumor growth efficiently. Furthermore, the BP/Bi2O3 nanosheets composed of biological friendly P, O, and Bi elements shows good biocompatibility in vitro and in vivo. This radiosensitizer thus has immense clinical potential for cancer therapy, and our findings reveal a general strategy to fabricate stable BP-based heterostructures for different applications.

Research Area(s)

  • 2D Layered materials, Black phosphorus, Cancer therapy, Photodynamic effect, Radiotherapy

Citation Format(s)

Stable black phosphorus/Bi2O3 heterostructures for synergistic cancer radiotherapy. / Huang, Hao; He, Lizhen; Zhou, Wenhua; Qu, Guangbo; Wang, Jiahong; Yang, Na; Gao, Jie; Chen, Tianfeng; Chu, Paul K.; Yu, Xue-Feng.

In: Biomaterials, Vol. 171, 07.2018, p. 12-22.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal