Volume 61, Issue 31 e202203546
Research Article

Restoration of the Immunogenicity of Tumor Cells for Enhanced Cancer Therapy via Nanoparticle-Mediated Copper Chaperone Inhibition

Feixiang Ding

Feixiang Ding

Department of Clinical Pharmacology, Hunan Key Laboratory of Pharmacogenetics, and National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008 P. R. China

Institute of Clinical Pharmacology, Engineering Research Center for applied Technology of Pharmacogenomics of Ministry of Education, Central South University, Changsha, 410078 P. R. China

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Fei Li

Fei Li

Department of Chemical Biology, State Key Laboratory of Natural and Biomimetic Drugs and Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing, 100191 P. R. China

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Dongsheng Tang

Dongsheng Tang

Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China

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Bin Wang

Bin Wang

Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China

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Junyan Liu

Junyan Liu

Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, 410008 P. R. China

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Prof. Xiaoyuan Mao

Prof. Xiaoyuan Mao

Department of Clinical Pharmacology, Hunan Key Laboratory of Pharmacogenetics, and National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008 P. R. China

Institute of Clinical Pharmacology, Engineering Research Center for applied Technology of Pharmacogenomics of Ministry of Education, Central South University, Changsha, 410078 P. R. China

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Prof. Jiye Yin

Prof. Jiye Yin

Department of Clinical Pharmacology, Hunan Key Laboratory of Pharmacogenetics, and National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008 P. R. China

Institute of Clinical Pharmacology, Engineering Research Center for applied Technology of Pharmacogenomics of Ministry of Education, Central South University, Changsha, 410078 P. R. China

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Prof. Haihua Xiao

Corresponding Author

Prof. Haihua Xiao

Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China

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Prof. Jing Wang

Corresponding Author

Prof. Jing Wang

Department of Chemical Biology, State Key Laboratory of Natural and Biomimetic Drugs and Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing, 100191 P. R. China

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Prof. Zhaoqian Liu

Corresponding Author

Prof. Zhaoqian Liu

Department of Clinical Pharmacology, Hunan Key Laboratory of Pharmacogenetics, and National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008 P. R. China

Institute of Clinical Pharmacology, Engineering Research Center for applied Technology of Pharmacogenomics of Ministry of Education, Central South University, Changsha, 410078 P. R. China

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First published: 01 June 2022
Citations: 59

Graphical Abstract

A combination strategy for synergistic chemo-sensitization and conversion of tumor cells into vaccines triggers an intense immune response through copper chaperone inhibition with multifunctional nanoparticles loaded with cisplatin prodrugs and DC_AC50 conjugated to reactive oxygen species (ROS)-responsive polymers.

Abstract

Recent progress in studying copper-dependent targets and pathways in the context of tumor treatment has provided new insights into therapeutic strategies of leveraging copper-dependent disease vulnerabilities and pharmacological manipulation of intratumor copper transportation to improve chemotherapy. Here, we developed reactive oxygen species (ROS)-sensitive nanoparticles loaded with copper chaperone inhibitor DC_AC50 and cisplatin(IV) prodrug. The released DC_AC50 can promote a remarkable accumulation of intracellular cisplatin and copper through inhibition of the Atox1-ATPase pathways, thereby enhancing the chemotherapeutic effect of cisplatin and inducing significant ROS generation. Excessive ROS then elicits intense endoplasmic reticulin (ER) stress which facilitates the immunogenic cell death (ICD) spurring a sustained immune response. Our study suggests that nanoparticle-mediated copper chaperone inhibition via DC_AC50 can restore the immunogenicity of tumor cells for enhanced chemotherapy and cancer immunotherapy.

Conflict of interest

The authors declare no conflicts of interest.

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