Volume 21, Issue 9 2410522
Research Article

Photoresponsive Bio-Heterojunctions Eliciting Immunogenicity to Prevent Infection Recurrence and Accelerating Chronic Wound Regeneration

Yingming Yang

Yingming Yang

State Key Laboratory of Oral Diseases, School of Chemical Engineering, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu, 610065 China

Department of Cariology and Endodontics, West China Hospital of Stomatology, Chengdu, 610041 China

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Kunneng Liang

Kunneng Liang

State Key Laboratory of Oral Diseases, School of Chemical Engineering, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu, 610065 China

Department of Cariology and Endodontics, West China Hospital of Stomatology, Chengdu, 610041 China

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Zilin Zhou

Zilin Zhou

State Key Laboratory of Oral Diseases, School of Chemical Engineering, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu, 610065 China

Department of Cariology and Endodontics, West China Hospital of Stomatology, Chengdu, 610041 China

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Yuanyuan Tu

Yuanyuan Tu

State Key Laboratory of Oral Diseases, School of Chemical Engineering, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu, 610065 China

Department of Cariology and Endodontics, West China Hospital of Stomatology, Chengdu, 610041 China

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Meng Li

Meng Li

State Key Laboratory of Oral Diseases, School of Chemical Engineering, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu, 610065 China

Department of Cariology and Endodontics, West China Hospital of Stomatology, Chengdu, 610041 China

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Ziyou Wang

Ziyou Wang

State Key Laboratory of Oral Diseases, School of Chemical Engineering, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu, 610065 China

Department of Cariology and Endodontics, West China Hospital of Stomatology, Chengdu, 610041 China

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Yi Deng

Corresponding Author

Yi Deng

State Key Laboratory of Oral Diseases, School of Chemical Engineering, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu, 610065 China

State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065 China

Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, 999077 China

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

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Jiyao Li

Corresponding Author

Jiyao Li

State Key Laboratory of Oral Diseases, School of Chemical Engineering, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu, 610065 China

Department of Cariology and Endodontics, West China Hospital of Stomatology, Chengdu, 610041 China

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

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First published: 26 January 2025

Abstract

Dynamic therapy utilizes reactive oxygen species (ROS) to antibacterial and enhance the innate immune system to treat bacterial infections. If ROS levels are too low, the elimination of pathogens and the enhancement of innate immunity cannot be achieved. However, excess accumulation of ROS may impact intracellular glutathione (GSH) levels, hindering T cell maturation and the establishment of immune memory. Herein, a multifunctional nanofiber membrane is designed, consisting of a polymer scaffold, MXene/CeO2 bio-heterojunctions (MX@Ce bio-HJs), and lactate oxidase (Lox) to balance the production of ROS, for the treatment of recurrent bacterial infections. In this system, MX@Ce bio-HJs upon near-infrared ray (NIR) generate photodynamic therapy, while Lox responds to the wound microenvironment exert chemodynamic therapy, synergistically produce ROS to rapidly eradicate bacteria, amplify the ability of dendritic cells to recognize and present antigens of bacterial fragments, and enhance innate immunity. Without NIR, MX@Ce bio-HJs showcase catalase-like and superoxide dismutase-like activities, scavenging subsequent ROS accumulation, promoting T cell maturation to form acquired immune memory, and combating recurrent bacterial infection. Such work highlights the potential to combat in situ bacterial infections and recurrent bacterial infections and inspires the development of future antibacterial therapies.

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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