Synthesis of CoSnS2 hollow nanocubes with NIR-enhanced chemodynamic therapy and glutathione depletion for combined cancer therapy

Xuerui Zhu; Zhaoyou Chu; Benjin Chen; Qianqian Jin; Xuke Ma; Juan Yang; Yongxin Jiang; Wanni Wang; Zhengbao Zha; Haisheng Qian

doi:10.1039/D2QM00230B

Synthesis of CoSnS₂ hollow nanocubes with NIR-enhanced chemodynamic therapy and glutathione depletion for combined cancer therapy†

Xuerui Zhu,‡^ab Zhaoyou Chu,‡^b Benjin Chen,^b Qianqian Jin,^a Xuke Ma,^a Juan Yang,^b Yongxin Jiang,^b Wanni Wang,*^b Zhengbao Zha

*^a and Haisheng Qian

*^bc

Author affiliations

* Corresponding authors

^a School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, P. R. China
E-mail: zbzha@hfut.edu.cn

^b School of Biomedical Engineering, Research and Engineering Center of Biomedical Materials, School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, P. R. China
E-mail: wnwang@ahmu.edu.cn, shqian@ahmu.edu.cn

^c Anhui Provincial Institute of Translational Medicine, Anhui Medical University, Hefei, Anhui 230032, P. R. China

Abstract

Low concentrations of endogenous hydrogen peroxide (H₂O₂) and intrinsic oxidative stress defense system greatly limited the efficiency of Fenton and Fenton-like reactions driven by a single metal element. Moreover, the complex physiological environment and inherent self-healing function of tumors make it difficult for chemodynamic therapy (CDT) alone, driven by Fenton and Fenton-like reactions, to eliminate malignant tumors. Herein, a tumor microenvironment (TME) remodeling cobalt-stannous sulfide CoSnS₂ (CSS) hollow nanocubes are presented for photothermal therapy (PTT)-improved CDT, in which two redox pairs (Co²⁺/Co³⁺ and Sn²⁺/Sn⁴⁺) are involved in catalyzing H₂O₂ to generate a large number of toxic hydroxyl radicals (˙OH) resulting in massive apoptosis of tumor cells. Importantly, two redox pairs (Co²⁺/Co³⁺ and Sn²⁺/Sn⁴⁺) promoted the depletion of glutathione (GSH), which reduced tumor antioxidant capacity and thus enhanced the CDT therapeutic impact of CDT. Furthermore, the CDT efficiency was greatly improved by the excellent photothermal effect (η = 47.23%). The combination of PTT and CDT achieved good therapeutic effects, which may provide a new perspective for the development of other anti-tumor strategies on the basis of improved CDT and modulation of TME.

Materials Chemistry Frontiers

Synthesis of CoSnS₂ hollow nanocubes with NIR-enhanced chemodynamic therapy and glutathione depletion for combined cancer therapy†

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Synthesis of CoSnS₂ hollow nanocubes with NIR-enhanced chemodynamic therapy and glutathione depletion for combined cancer therapy

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