材料科学
骨髓炎
放化疗
微生物学
纳米技术
医学
癌症
免疫学
生物
内科学
作者
Yufei Zhang,Yijie Cheng,Zhe Zhao,Shengpeng Jiang,Yuhan Zhang,Jie Li,Siyuan Huang,Wenbo Wang,Yun Xue,Anran Li,Zhen Tao,Zhongming Wu,Xinge Zhang
标识
DOI:10.1002/adma.202304991
摘要
Abstract The eradication of osteomyelitis caused by methicillin‐resistant Staphylococcus aureus (MRSA) poses a significant challenge due to its development of biofilm‐induced antibiotic resistance and impaired innate immunity, which often leads to frequent surgical failure. Here, the design, synthesis, and performance of X‐ray‐activated polymer‐reinforced nanotherapeutics that modulate the immunological properties of infectious microenvironments to enhance chemoradiotherapy against multidrug‐resistant bacterial deep‐tissue infections are reported. Upon X‐ray radiation, the proposed polymer‐reinforced nanotherapeutic generates reactive oxygen species and reactive nitrogen species. To robustly eradicate MRSA biofilms at deep infection sites, these species can specifically bind to MRSA and penetrate biofilms for enhanced chemoradiotherapy treatment. X‐ray‐activated nanotherapeutics modulate the innate immunity of macrophages to prevent the recurrence of osteomyelitis. The remarkable anti‐infection effects of these nanotherapeutics are validated using a rat osteomyelitis model. This study demonstrates the significant potential of a synergistic chemoradiotherapy and immunotherapy method for treating MRSA biofilm‐infected osteomyelitis.
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