Volume 21, Issue 9 2410710
Research Article

A Fused Membrane-Camouflaged Biomimetic Nanosystem for Dual-Targeted Therapy of Septic Arthritis

Zeping Yu

Zeping Yu

Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, 610041 China

Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041 China

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Mengxian Wang

Mengxian Wang

State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041 China

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Junqiao Li

Junqiao Li

Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, 610041 China

Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041 China

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Hong Xu

Hong Xu

Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041 China

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Wenli Zhang

Wenli Zhang

Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041 China

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Fei Xing

Fei Xing

Department of Pediatric Surgery, West China Hospital, Sichuan University, Chengdu, 610041 China

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Jian Li

Corresponding Author

Jian Li

Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, 610041 China

Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041 China

E-mail: [email protected] (Yan Xiong), [email protected] (Jian Li), [email protected] (Jiaojiao Yang)

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Jiaojiao Yang

Corresponding Author

Jiaojiao Yang

State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041 China

E-mail: [email protected] (Yan Xiong), [email protected] (Jian Li), [email protected] (Jiaojiao Yang)

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Yan Xiong

Corresponding Author

Yan Xiong

Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, 610041 China

Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041 China

E-mail: [email protected] (Yan Xiong), [email protected] (Jian Li), [email protected] (Jiaojiao Yang)

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First published: 19 January 2025
Citations: 3

Abstract

Due to the inherent aseptic and enclosed characteristics of joint cavity, septic arthritis (SA) almost inevitably leads to intractable infections and rapidly progressing complex pathological environments. Presently, SA faces not only the deficient effectiveness of the gold-standard systemic antibiotic therapy but also the scarcity of effective localized targeted approaches and standardized animal models. Herein, an ingenious multifunctional nanosystem is designed, which involves the methylation of hyaluronic acid (HA), copolymerization with DEGDA, loading with vancomycin (VAN), and then coating with fused macrophage-platelet membrane (denoted as FM@HA@VAN). Upon intra-articular administration, FM@HA@VAN nanoparticles exhibit sustained retention and selectively targeting to infected sites, leveraging macrophage-mediated inflammation homing and platelet-directed bacteria targeting. The acidic microenvironment triggers responsive release of vancomycin, leading to potent bactericidal effects. Subsequently, the exposed HA@VAN nanoparticles are efficiently internalized by activated macrophages, releasing HA to alleviate oxidative stress and achieve chondroprotection by inhibiting pro-inflammatory cytokines, neutralizing ROS and upregulating macrophage M2 polarization. In vivo model and experiments confirm the efficacy of this dual-targeting antibacterial approach, demonstrating its precision in eradicating bacterial infections and alleviating associated pathological processes, including synovial hyperplasia and cartilage erosion. The dual-targeting therapeutic nanosystem, coordinated with fused-membranes, holds promise for enhancing the treatment efficacy of SA.

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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