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首页> 外文期刊>Journal of Microencapsulation: Microcapsules Liposomes Nanoparticles Microcells Microspheres >Preliminary studies on the development of IgA-loaded chitosan-dextran sulphate nanoparticles as a potential nasal delivery system for protein antigens
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Preliminary studies on the development of IgA-loaded chitosan-dextran sulphate nanoparticles as a potential nasal delivery system for protein antigens

机译:负载IgA的壳聚糖-葡聚糖硫酸盐纳米颗粒作为蛋白抗原潜在鼻腔输送系统的初步研究

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This study describes the development of a biodegradable nanoparticulate system for the intranasal delivery of multiple proteins. Chitosan (CS)-dextran sulphate (DS) nanoparticles were developed and optimised for the incorporation of pertussis toxin (PTX) and a potential targeting ligand (immunoglobulin-A, IgA). In vitro characterization and in vivo uptake studies were performed for the evaluation of developed nanoparticles. The ratio of CS to DS, the order of mixing and pH of nanoparticle suspension were identified as important formulation factors governing the size and zeta potential of nanoparticles. An optimised CS-DS nanoparticle formulation prepared with the CS to DS weight ratio of 3:1 was used to load PTX and/or IgA. Entrapment efficiency of >90% was obtained for both. The in vivo uptake of IgA-loaded CS-DS nanoparticles in mice showed a preferential uptake of nanoparticles probably by nasal membranous or microfold cells following intranasal administration. The results of this study indicate the potential application of IgA-loaded CS-DS nanoparticles as a nasal vaccine delivery system.
机译:这项研究描述了鼻内多种蛋白质可生物降解的纳米颗粒系统的发展。开发并优化了壳聚糖(CS)-硫酸葡聚糖(DS)纳米颗粒,用于掺入百日咳毒素(PTX)和潜在的靶向配体(免疫球蛋白A,IgA)。进行了体外表征和体内吸收研究,以评估已开发的纳米颗粒。 CS与DS的比例,混合顺序和纳米颗粒悬浮液的pH被确定为控制纳米颗粒大小和Zeta电位的重要配方因素。以CS与DS的重量比为3:1制备的优化的CS-DS纳米颗粒配方用于负载PTX和/或IgA。两种方法的包封率均> 90%。鼻内给药后,小鼠体内对IgA负载的CS-DS纳米颗粒的体内摄取显示出优先通过鼻膜或微褶细胞摄取纳米颗粒。这项研究的结果表明,装载IgA的CS-DS纳米颗粒可作为鼻疫苗输送系统的潜在应用。

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