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Mucosal immunization against hepatitis A: Antibody responses are enhanced by co-administration of synthetic oligodeoxynucleotides and a novel cationic lipid

机译:甲型肝炎的粘膜免疫:合成寡聚脱氧核苷酸和新型阳离子脂质的共同给药可增强抗体应答

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摘要

Hepatitis A caused by hepatitis A virus (HAV) transmitted by the fecal-oral route, results in considerable morbidity and economic loss. Mucosal immunization can be more effective than conventional injection at inducing both local and systemic immunity to HAV. Here we show that co-administration of killed HAV with synthetic oligodeoxynucleotides (ODNs) containing CpG sequences, and a novel polycationic sphingolipid (CCS)/cholesterol liposomal delivery system, markedly enhances the HAV-specific antibody response at the intestinal interface, particularly when delivered intrarectally or intranasally, to Balb/c mice at low HAV doses. A mucosally delivered, antigen-sparing HAV vaccine that is easily administered without specialized equipment or personnel, is an attractive alternative for facilitating mass immunization in hepatitis A outbreaks.
机译:粪便途径传播的甲型肝炎病毒(HAV)引起的甲型肝炎导致相当大的发病率和经济损失。黏膜免疫可以比常规注射更有效地诱导针对HAV的局部和全身免疫。在这里,我们显示杀死的HAV与含有CpG序列的合成寡聚脱氧核苷酸(ODN)以及新型的聚阳离子鞘脂(CCS)/胆固醇脂质体递送系统共同给药,可显着增强肠道界面上的HAV特异性抗体应答,尤其是在递送时低HAV剂量对Balb / c小鼠进行直肠内或鼻内给药。粘膜递送的保留抗原的HAV疫苗无需专业设备或人员即可轻松施用,是促进甲型肝炎暴发大规模免疫的有吸引力的替代方法。

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