Measurement of neutralizing antibody responses against H5N1 clades in immunized mice and ferrets using pseudotypes expressing influenza hemagglutinin and neuraminidase.

Measurement of neutralizing antibody responses against H5N1 clades in immunized mice and ferrets using pseudotypes expressing influenza hemagglutinin and neuraminidase.
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使用表达流感血凝素和神经氨酸酶的假型来测量免疫小鼠和雪貂中针对 H5N1 进化枝的中和抗体反应

DOI:
10.1016/j.vaccine.2009.08.056
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发表时间:
2009-11-12
期刊:
影响因子:
5.5
通讯作者:
Zhou P
Zhou P
中科院分区:
医学3区
文献类型:
--
作者:
Tsai C;Caillet C;Hu H;Zhou F;Ding H;Zhang G;Zhou B;Wang S;Lu S;Buchy P;Deubel V;Vogel FR;Zhou P

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中和抗体与流感病毒感染的预防和清除有关。中和(MN)和血凝抑制(HI)试验目前用于评估针对人类和禽流感病毒(包括H5 N1)的中和抗体应答。MN测定在某种程度上是劳动密集型的,而HI是中和的替代物。此外,在这些测定中使用可复制病毒需要生物安全等级3(BSL-3)的控制。因此,不需要BSL-3设施的中和测定将是有利的。为了实现这一目标,我们产生了一组表达流感血凝素(HA)和神经氨酸酶(NA)的假型,并开发了基于假型的中和(PN)测定。在这里,我们证明了HA/NA假型模拟流感病毒的释放和进入,并且PN测定显示出良好的特异性,并揭示了针对不同H5 N1分支和亚分支的中和抗体滴度的定量差异。使用免疫雪貂血清,我们证明了PN,MN和HI检测之间的良好相关性。因此,我们得出结论,PN试验是一种灵敏和可定量的方法来测量针对不同的H5 N1流感病毒的分支和亚分支的中和抗体。
Neutralizing antibody is associated with the prevention and clearance of influenza virus infection. Microneutralization (MN) and hemagglutination inhibition (HI) assays are currently used to evaluate neutralizing antibody responses against human and avian influenza viruses, including H5N1. The MN assay is somewhat labor intensive, while HI is a surrogate for neutralization. Moreover, use of replication competent viruses in these assays requires biosafety level 3 (BSL-3) containment. Therefore, a neutralization assay that does not require BSL-3 facilities would be advantageous. Toward this goal, we generated a panel of pseudotypes expressing influenza hemagglutinin (HA) and neuraminidase (NA) and developed a pseudotype-based neutralization (PN) assay. Here we demonstrate that HA/NA pseudotypes mimic release and entry of influenza virus and that the PN assay exhibits good specificity and reveals quantitative difference in neutralizing antibody titers against different H5N1 clades and subclades. Using immune ferret sera, we demonstrated excellent correlation between the PN, MN, and HI assays. Thus, we conclude that the PN assay is a sensitive and quantifiable method to measure neutralizing antibodies against diverse clades and subclades of H5N1 influenza virus.
DOI: 10.1093/protein/5.8.827
发表时间: 1992-12-01
期刊: PROTEIN ENGINEERING
影响因子: --
作者:
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通讯作者: PEARL, LH
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期刊: GENE THERAPY
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发表时间: 2005-09-06
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发表时间: 1996-06-20
期刊: NATURE
影响因子: 64.8
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发表时间: 1993-08-01
期刊: HUMAN GENE THERAPY
影响因子: 4.2
作者:
MANTHORPE, M;CORNEFERTJENSEN, F;DWARKI, V
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