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首页> 外文期刊>Vaccine >Differential antibody responses to Plasmodium falciparum-derived B-cell epitopes induced by diepitope multiple antigen peptides (MAP) containing different T-cell epitopes.
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Differential antibody responses to Plasmodium falciparum-derived B-cell epitopes induced by diepitope multiple antigen peptides (MAP) containing different T-cell epitopes.

机译:对由恶性疟原虫衍生的B细胞表位的差异抗体反应,该抗原由二表位包含不同T细胞表位的多种抗原肽(MAP)诱导。

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摘要

Epitopes of universal character are needed when designing subunit vaccines against infectious diseases such as malaria. We have compared the immunogenicity of B-cell epitopes from the Plasmodium falciparum antigen repeats DPNANPNV (PfCS protein) and VTEEI (Pf332) when assembled with four different universal T-cell epitopes in diepitope multiple antigen peptides (MAP). T-epitopes employed were from P. falciparum antigens (CS.T3, [T*]4 and EBP3) or from the Clostridium tetani toxin (P2). In association with either of the T-epitopes, the genetic unresponsiveness to the B-epitopes was successfully bypassed. Our results show that the immunogenicity of a T-epitope alone does not necessarily predict the ability of the T-epitope to provide T-cell help when combined with other epitopes in an immunogen. Further, the nature of the immune responses in terms of total IgG antibodies and their subclass distribution, T-cell proliferation and IFN- gamma production, varied with the T-epitope and mouse strain, which may indicate the need for inclusion of a combination of different universal T-epitopes in a future malaria subunit vaccine.
机译:设计针对传染病(例如疟疾)的亚单位疫苗时,需要通用的抗原决定簇。我们比较了恶性疟原虫抗原重复序列DPNANPNV(PfCS蛋白)和VTEEI(Pf332)的B细胞抗原决定簇的免疫原性,该抗原簇与抗原决定簇多抗原肽(MAP)中的四个不同的通用T细胞抗原决定簇组装在一起。使用的T表位来自恶性疟原虫抗原(CS.T3,[T *] 4和EBP3)或破伤风梭菌毒素(P2)。与任一T-表位相关联,成功绕过了对B-表位的遗传无反应性。我们的结果表明,单独的T表位的免疫原性并不一定能预测T表位与免疫原中的其他表位结合提供T细胞帮助的能力。此外,就总IgG抗体及其亚类分布,T细胞增殖和IFN-γ产生而言,免疫应答的性质随T表位和小鼠品系的不同而变化,这可能表明需要包含以下药物的组合:未来的疟疾亚单位疫苗中使用不同的通用T表位。

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