Rapid test to assess the escape of SARS-CoV-2 variants of concern.

Rapid test to assess the escape of SARS-CoV-2 variants of concern.
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DOI:
10.1126/sciadv.abl7682
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发表时间:
2021-12-03
期刊:
影响因子:
13.6
通讯作者:
Chilkoti A
Chilkoti A
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Heggestad JT;Britton RJ;Kinnamon DS;Wall SA;Joh DY;Hucknall AM;Olson LB;Anderson JG;Mazur A;Wolfe CR;Oguin TH 3rd;Sullenger BA;Burke TW;Kraft BD;Sempowski GD;Woods CW;Chilkoti A

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快速测试可在 1 小时内测量针对 SARS-CoV-2 变体的中和抗体。严重急性呼吸综合征冠状病毒 2 (SARS-CoV-2) 变种在持续的 2019 年冠状病毒病 (COVID-19) 大流行中令人担忧。在这里,我们开发了一种名为 CoVariant-SCAN 的快速测试,可检测能够阻断血管紧张素转换酶 2 受体与野生型 (WT) SARS-CoV-2 和其他三种变体:B.1.1.7、B.1.351 和 P.1 的刺突蛋白之间相互作用的中和抗体 (nAb)。使用 CoVariant-SCAN,我们评估了来自 COVID-19 阳性且已接种疫苗的个体的单克隆抗体和血浆的中和/阻断作用。对于几种单克隆抗体和大多数血浆样品,相对于 WT,针对 B.1.351 和 P.1 变体的中和作用减弱,而 B.1.1.7 很大程度上被交叉中和。我们还表明,我们可以快速调整平台来检测针对其他变体 - B.1.617.2 (Delta) 的 nAb,而无需重新设计或重新优化测定。使用 CoVariant-SCAN 的结果与活病毒中和测定一致,并表明这种易于部署的测试可用于快速评估针对多种 SARS-CoV-2 变体的 nAb 反应。
A rapid test measures neutralizing antibodies against SARS-CoV-2 variants of concern in 1 hour. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants are concerning in the ongoing coronavirus disease 2019 (COVID-19) pandemic. Here, we developed a rapid test, termed CoVariant-SCAN, that detects neutralizing antibodies (nAbs) capable of blocking interactions between the angiotensin-converting enzyme 2 receptor and the spike protein of wild-type (WT) SARS-CoV-2 and three other variants: B.1.1.7, B.1.351, and P.1. Using CoVariant-SCAN, we assessed neutralization/blocking of monoclonal antibodies and plasma from COVID-19–positive and vaccinated individuals. For several monoclonal antibodies and most plasma samples, neutralization against B.1.351 and P.1 variants is diminished relative to WT, while B.1.1.7 is largely cross-neutralized. We also showed that we can rapidly adapt the platform to detect nAbs against an additional variant—B.1.617.2 (Delta)—without reengineering or reoptimizing the assay. Results using CoVariant-SCAN are consistent with live virus neutralization assays and demonstrate that this easy-to-deploy test could be used to rapidly assess nAb response against multiple SARS-CoV-2 variants.
SARS-COV-2血统的估计可传播和影响B.1.1.7在英国。
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发表时间: 2021-04-09
期刊: Science (New York, N.Y.)
影响因子: --
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期刊: Science (New York, N.Y.)
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期刊: MSPHERE
影响因子: 4.8
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发表时间: 2004-09-01
影响因子: 3.1
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