Broadly Neutralizing Activity of Zika Virus-Immune Sera Identifies a Single Viral Serotype.

Broadly Neutralizing Activity of Zika Virus-Immune Sera Identifies a Single Viral Serotype.
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DOI:
10.1016/j.celrep.2016.07.049
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发表时间:
2016-08-09
期刊:
影响因子:
8.8
通讯作者:
Pierson TC
Pierson TC
中科院分区:
生物学1区
文献类型:
--
作者:
Dowd KA;DeMaso CR;Pelc RS;Speer SD;Smith ARY;Goo L;Platt DJ;Mascola JR;Graham BS;Mulligan MJ;Diamond MS;Ledgerwood JE;Pierson TC

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最近流行的寨卡病毒(ZIKV)与妊娠期先天畸形和吉兰-巴利综合征有关。有两个 ZIKV 谱系(非洲和亚洲)的氨基酸同一性超过 95%。关于针对一种谱系引发的中和抗体抵御另一种谱系的能力知之甚少。我们通过测量六种 ZIKV 毒株对 ZIKV 确诊的恢复期人血清或血浆样本中和的敏感性,研究了 ZIKV 感染后中和抗体反应的广度。无论病毒的细胞来源如何,当代亚洲和早期非洲的 ZIKV 毒株对中和反应同样敏感。此外,感染非洲或亚洲ZIKV毒株后产生的小鼠免疫血清能够同等地中和同源和异源ZIKV毒株。由于我们的研究仅定义了一种 ZIKV 血清型,因此能够引发强烈中和抗体反应的候选疫苗应该能够抑制两种 ZIKV 谱系的感染,包括在美洲流行的毒株。
Recent epidemics of Zika virus (ZIKV) have been associated with congenital malformation during pregnancy and Guillain-Barré syndrome. There are two ZIKV lineages (African and Asian) that share >95% amino acid identity. Little is known regarding the ability of neutralizing antibodies elicited against one lineage to protect against the other. We investigated the breadth of the neutralizing antibody response following ZIKV infection by measuring the sensitivity of six ZIKV strains to neutralization by ZIKV-confirmed convalescent human serum or plasma samples. Contemporary Asian and early African ZIKV strains were similarly sensitive to neutralization regardless of the cellular source of virus. Furthermore, mouse immune serum generated after infection with African or Asian ZIKV strains was capable of neutralizing homologous and heterologous ZIKV strains equivalently. As our study defines only a single ZIKV serotype, vaccine candidates eliciting robust neutralizing antibody responses should inhibit infection of both ZIKV lineages, including strains circulating in the Americas.
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