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ddabpla纳米疫苗佐剂放大工艺研究及初步安全性评估
Authors
刘美娟
朱艳华
杨婷媛
王连艳
Publication date
1 January 2019
Publisher
Abstract
采用减压蒸发结合切向流超滤法放大制备了1种用作疫苗佐剂的双十八烷基二甲基溴化铵(DDAB)修饰的聚乳酸(PLA)纳米球(DDAB/PLA),并对制备的纳米球进行表征,包括表面形貌、粒径及粒度分布、ζ电位、抗原吸附率、收率、稳定性。以健康雌性Balb/c小鼠为实验对象,进行纳米球初步安全性评价。结果表明,制备所得纳米球粒径为(150.3±10.4)nm;ζ电位为(54.0±4.0)mV;产率为(96.3±5.2)%;对鸡卵清白蛋白(OVA)吸附率为(85.4±0.4)%。扫描电镜结果显示所制备的纳米球呈圆整球形,且分布均一。该疫苗佐剂体外稳定性较好,在超过正常注射剂量100倍的情况下,纳米球对小鼠具有良好的安全性
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Last time updated on 05/12/2019