Effect of D614G Spike Variant on Immunoglobulin G, M, or A Spike Seroassay Performance.

Effect of D614G Spike Variant on Immunoglobulin G, M, or A Spike Seroassay Performance.
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DOI:
10.1093/infdis/jiaa743
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发表时间:
2021-03-03
期刊:
The Journal of infectious diseases
影响因子:
--
通讯作者:
Sadtler K
Sadtler K
中科院分区:
其他
文献类型:
--
作者:
Klumpp-Thomas C;Kalish H;Hicks J;Mehalko J;Drew M;Memoli MJ;Hall MD;Esposito D;Sadtler K

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一种新的刺突蛋白变异体(D 614 G)的出现增加了感染性,促使许多人分析其在严重急性呼吸综合征冠状病毒2(SARS-CoV-2)大流行中的作用。人们担心,一个人接触到病毒的一个变种,是否会对第二个变种产生交叉反应记忆。因此,我们分析了这两种变体的血清学反应性,我们发现来自高发病率人群的88名供体的抗体对原始刺突和D 614刺突变体都有反应。这些数据表明,暴露于任一变体的患者具有交叉应答的体液免疫。这代表了SARS-CoV-2疾病生物学和治疗学的重要发现。由于D 614 G刺突变体在美国成为主要的严重急性呼吸综合征冠状病毒2型变体,因此对抗体结合和血清学检测性能可能存在差异的问题产生了担忧。我们表明抗体与这两种变体都发生交叉反应。
Emergence of a new spike protein variant (D614G) with increased infectivity has prompted many to analyze its role in the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic. There is concern regarding whether an individual exposed to one variant of a virus will have cross-reactive memory to the second variant. Accordingly, we analyzed the serologic reactivity of both variants, and we found that antibodies from 88 donors from a high-incidence population reacted toward both the original spike and the D614 spike variant. These data suggest that patients who are exposed to either variant have cross-responsive humoral immunity. This represents an important finding both for SARS-CoV-2 disease biology and for therapeutics. As the D614G spike variant emerged as the main severe acute respiratory syndrome coronavirus 2 variant in the United States, concerns arose regarding possible differences in antibody binding and serologic assay performance. We show that antibodies cross-react with both variants.
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