rFSAV promotes Staphylococcus aureus-infected bone defect healing via IL-13- mediated M2 macrophage polarization

Staphylococcus aureus (S. aureus) contamination commonly occurs in orthopedic internal fixation operations, leading to a delayed healing of the defected bone tissue. However, antibiotic treatments are ineffective in dealing with S. aureus bone infections due to the rise in multiple antimicrobial res...

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Published inClinical immunology (Orlando, Fla.) Vol. 255; p. 109747
Main Authors Zhang, Yanhao, Yang, Feng, Sun, Dong, Xu, Limin, Shi, Yaojia, Qin, Leilei, Zhao, Liqun, Wang, Liting, Sun, Wei, Wu, Hongri, Lu, Dongshui, Zhang, Weijun, luo, Ping, Cheng, Ping, Zou, Quanming, Zeng, Hao
Format Journal Article
LanguageEnglish
Published Elsevier Inc 01.10.2023
Subjects
Bone infection
Interleukin-13
Macrophage polarization
Staphylococcus aureus
Vaccine
Vaccine
Bone infection
Macrophage polarization
Staphylococcus aureus
Interleukin-13
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Summary:Staphylococcus aureus (S. aureus) contamination commonly occurs in orthopedic internal fixation operations, leading to a delayed healing of the defected bone tissue. However, antibiotic treatments are ineffective in dealing with S. aureus bone infections due to the rise in multiple antimicrobial resistances. Here, we reported the protective effects of a recombinant five-antigen S. aureus vaccine (rFSAV) in an S. aureus infected bone defect model. In this study, we found the number of M2 macrophages markedly increased in the defect site and played a critical role in the healing of defected bone mediated by rFSAV. Mechanistically, rFSAV mediated increased level of IL-13 in bone defect site predominant M2 macrophage polarization. In summary, our study reveals a key role of M2 macrophage polarization in the bone regeneration process in S. aureus infection induced bone defect, which provide a promising application of rFSAV for the treatment of bone infection for orthopedic applications. •rFSAV promotes bone S. aureus-contaminated bone defect healing via facilitating M2 macrophage polarization.•Th2 type cytokine IL-13 dominates M2 macrophage polarization in bone defect area in rFSAV vaccinated mice.•Antigen-specific Th2 cells could circulate to the infection area and promote M2 macrophage polarization.
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ISSN:1521-6616
1521-7035
DOI:10.1016/j.clim.2023.109747