多功能pH响应的纳米载体,用于向的阿齐思罗米辛输送和在细菌败血症中免疫调节
Siran Wang1, Lu Yuan2, Chang Gao3
1Translational Medicine Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China; University of Groningen and University Medical Center Groningen, Department of Biomaterials & Biomedical Technology, 9713AV, Groningen, the Netherlands; State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, 300071, Tianjin, China; Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325001, Zhejiang, China.
这项研究提出了对pH敏感的细胞,可以将亚齐思罗素输送到细菌生物膜中,从而增强根除. 微粒还与病原体相关的分子模式结合,减少炎症并改善毒症模型中的存活率.
科学领域:
- 生物材料科学 生物材料科学
- 传染性疾病 传染性疾病
- 免疫学 免疫学 免疫学
背景情况:
- 抗生素耐药性和细菌生物膜使感染管理复杂化,往往导致败血症.
- 失调的免疫反应会加剧严重的细菌感染.
研究的目的:
- 开发一种pH响应的纳米载体,用于增强抗生素输送和免疫调节.
- 为了研究含有阿齐思罗米的菌在对抗抗生素耐药性感染和败血症方面的疗效.
主要方法:
- 准备了装载着阿齐思罗米 (Azi) 的多聚乙烯糖醇-多聚β-氨基 (PEG-PAE) 自组装的小粒.
- 评估了微粒在酸性环境中的电荷转换和对负电荷细菌的向.
- 在小鼠腹膜炎模型中评估了生物膜消除,PAMP结合,免疫调节效应和生存率.
主要成果:
- 亚齐-PEG-PAE菌株表现出响应pH的电荷转换,有效地向酸性生物膜.
- 与自由亚齐菌素相比,实现了增强的生物膜消除.
- 微粒结合PAMP,减少炎症,减少败血症发病率,并增加小鼠的存活率.
- 脱氧的PAMPs促进了M1巨细胞的两极分化,从而改善了细菌清除.
结论:
- 多功能菌提供了一种双重的抗菌和免疫调节策略,用于抗生素耐药性感染和败血症.
- 这种方法显示出克服生物膜和免疫失调在败血症治疗中所带来的挑战的希望.
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