Volume 9, Issue 7 2402091
Research Article

Biomimetic Nanoplatform-Mediated Protective Autophagy Blockage Enhancing Sonodynamic and Ca2+-Overload Combined Therapy for Colon Cancer

Yuanru Zhao

Yuanru Zhao

Institute of Cardiovascular Sciences, Guangxi Academy of Medical Sciences, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, 530021 China

School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061 China

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Yujie Zhang

Yujie Zhang

School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061 China

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Yan Zhang

Yan Zhang

School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061 China

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Yuanyuan Zhang

Yuanyuan Zhang

School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061 China

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Zhichao Deng

Zhichao Deng

School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061 China

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Ting Bai

Ting Bai

Department of Cardiovascular Medicine, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi, 710077 China

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Mingxin Zhang

Corresponding Author

Mingxin Zhang

Department of Gastroenterology, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi, 710077 China

E-mail: [email protected]; [email protected]; [email protected]

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Mingzhen Zhang

Corresponding Author

Mingzhen Zhang

School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061 China

Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061 China

E-mail: [email protected]; [email protected]; [email protected]

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Jian Song

Corresponding Author

Jian Song

Institute of Cardiovascular Sciences, Guangxi Academy of Medical Sciences, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, 530021 China

E-mail: [email protected]; [email protected]; [email protected]

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First published: 26 January 2025

Abstract

The application of a multimodal combination therapy based on a targeted nanodelivery system has been demonstrated to be more valuable in the treatment of cancer. In this work, a hollow polydopamine delivery system (CCC@HP@M) was designed to achieve sonodynamic and calcium-overload combined therapy for colon cancer. The CCC@HP@M exhibits both homologous tumour-targeting ability and pH-responsive drug release properties, enabling the simultaneous targeted delivery of CaO2 nanoparticles/sonosensitizer Ce6/autophagy inhibitor CQ. The CaO2 nanoparticles as calcium agents capable of triggering Ca2+ overload in tumor cells. The oxidative stress produced by sonodynamic therapy is facilitated by the disruption of calcium homeostasis to enhance the effect of Ca2+ overload-induced apoptosis. Furthermore, the O2 produced by CaO2 augments the sensitization of sonodynamic therapy. The autophagy inhibitor CQ can inhibit protective cellular autophagy, which is activated by sonodynamic therapy and Ca2+ overload. Consequently, autophagy blockage can ensure the therapeutic effect of sonodynamic and Ca2+-overload combined therapy for colon cancer. The results of experiments in vitro and in vivo demonstrate that the stimulus-responsive targeted delivery system achieves autophagy blockage augmented sonodynamic and Ca2+-overload combined therapy of colon cancer. This work offers a promising theoretical basis for optimizing combined treatment strategies for tumors and clinical translational applications.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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