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首页> 外文期刊>Journal of Microencapsulation: Microcapsules Liposomes Nanoparticles Microcells Microspheres >CNA-loaded PLGA nanoparticles improve humoral response against S-aureus-mediated infections in a mouse model: subcutaneous vs. nasal administration strategy
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CNA-loaded PLGA nanoparticles improve humoral response against S-aureus-mediated infections in a mouse model: subcutaneous vs. nasal administration strategy

机译:负载CNA的PLGA纳米粒子可改善小鼠模型中针对S-金黄色葡萄球菌介导的感染的体液反应:皮下与鼻腔给药策略

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摘要

The aim of this work was the assessment of the in vivo immune response of a poly(lactide-co-glycolide)-based nanoparticulate adjuvant for a sub-unit vaccine, namely, a purified recombinant collagen-binding bacterial adhesion fragment (CNA19), against Staphylococcus aureus-mediated infections. In vivo immunogenicity studies were performed on mice: immunisation protocols encompassed subcutaneous and intranasal administration of CNA19 formulated as nanoparticles (NPs) and furthermore, CNA19-loaded NPs formulated in a set-up thermosetting chitosan-beta glycerolphosphate (chitosan-beta-GP) solution for intranasal route in order to extend antigen exposure to nasal mucosa. CNA19 loaded NPs (mean size of about 195 nm, 9.04 +/- 0.37 mu g/mg as CNA19 loading capacity) confirmed as suitable vaccine for subcutaneous administration with a more pronounced adjuvant effect (about 3-fold higher) with respect to aluminium, recognised as reference adjuvant. CNA19 loaded NPs formulated in an optimised thermogelling chitosan-beta-GP solution showed promising results for eliciting an effective humoral response and a good chance as intranasal boosting dose.
机译:这项工作的目的是评估基于聚丙交酯-乙交酯的纳米颗粒佐剂对亚单位疫苗(即纯化的重组胶原结合细菌粘附片段(CNA19))的体内免疫应答,对抗金黄色葡萄球菌介导的感染。在小鼠上进行了体内免疫原性研究:免疫方案包括皮下和鼻内施用配制为纳米颗粒(NPs)的CNA19,此外,在热固性壳聚糖-β甘油磷酸(chitosan-β-GP)溶液中配制的负载CNA19的NPs。鼻内途径,以延长抗原暴露于鼻粘膜。确认已负载CNA19的NP(平均大小约为195 nm,CNA19负载能力为9.04 +/- 0.37μg/ mg)是适合皮下给药的疫苗,对铝具有更明显的辅助作用(约高3倍),被确认为参考佐剂。在优化的热凝胶化壳聚糖-β-GP溶液中配制的载有CNA19的NPs表现出令人鼓舞的结果,可引发有效的体液反应,并有很好的机会作为鼻内加强剂量。

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