Systematic evaluation of IgG responses to SARS-CoV-2 spike protein-derived peptides for monitoring COVID-19 patients.

Systematic evaluation of IgG responses to SARS-CoV-2 spike protein-derived peptides for monitoring COVID-19 patients.
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系统评价新冠肺炎患者对SARS-CoV-2刺突蛋白衍生肽的免疫球蛋白应答。

DOI:
10.1038/s41423-020-00612-5
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发表时间:
2021-03
影响因子:
24.1
通讯作者:
Tao SC
Tao SC
中科院分区:
医学1区
文献类型:
--
作者:
Li Y;Lai DY;Lei Q;Xu ZW;Wang F;Hou H;Chen L;Wu J;Ren Y;Ma ML;Zhang B;Chen H;Yu C;Xue JB;Zheng YX;Wang XN;Jiang HW;Zhang HN;Qi H;Guo SJ;Zhang Y;Lin X;Yao Z;Pang P;Shi D;Wang W;Yang X;Zhou J;Sheng H;Sun Z;Shan H;Fan X;Tao SC

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血清学检测在监测和抗击COVID-19大流行中发挥着至关重要的作用。重组刺突蛋白(S蛋白),特别是S1蛋白,是用于血清学检测的主要试剂之一。然而,S蛋白生产的高成本以及可能与其他人类冠状病毒的交叉反应性带来了不可避免的挑战。通过利用具有完全刺突蛋白覆盖的肽微阵列,我们分析了从多个临床中心收集的来自858名COVID-19患者、63名无症状患者和610名对照的2,434份血清。基于这些结果,我们鉴定了几种具有高诊断性能的S蛋白衍生的12聚体肽。特别是,对于监测IgG应答,一种肽(aa 1148-1159或S2-78)表现出与S1蛋白相当的灵敏度(95.5%,95%CI 93.7-96.9%)和特异性(96.7%,95%CI 94.8-98.0%),用于检测有症状和无症状的COVID-19病例。此外,通过ELISA在独立样本队列中成功验证了S2-78(aa 1148-1159)IgG的诊断性能。构建了一组四种肽,S1-93(aa 553-564)、S1-97(aa 577-588)、S1-101(aa 601-612)和S1-105(aa 625-636),其可能会避免与来自被其他冠状病毒感染的患者的血清的潜在交叉反应性。本研究中鉴定的肽可单独应用或与S1蛋白联合应用,以实现准确、经济和可获得的COVID-19诊断。
Serological tests play an essential role in monitoring and combating the COVID-19 pandemic. Recombinant spike protein (S protein), especially the S1 protein, is one of the major reagents used for serological tests. However, the high cost of S protein production and possible cross-reactivity with other human coronaviruses pose unavoidable challenges. By taking advantage of a peptide microarray with full spike protein coverage, we analyzed 2,434 sera from 858 COVID-19 patients, 63 asymptomatic patients and 610 controls collected from multiple clinical centers. Based on the results, we identified several S protein-derived 12-mer peptides that have high diagnostic performance. In particular, for monitoring the IgG response, one peptide (aa 1148–1159 or S2–78) exhibited a sensitivity (95.5%, 95% CI 93.7–96.9%) and specificity (96.7%, 95% CI 94.8–98.0%) comparable to those of the S1 protein for the detection of both symptomatic and asymptomatic COVID-19 cases. Furthermore, the diagnostic performance of the S2–78 (aa 1148–1159) IgG was successfully validated by ELISA in an independent sample cohort. A panel of four peptides, S1–93 (aa 553–564), S1–97 (aa 577–588), S1–101 (aa 601–612) and S1–105 (aa 625–636), that likely will avoid potential cross-reactivity with sera from patients infected by other coronaviruses was constructed. The peptides identified in this study may be applied independently or in combination with the S1 protein for accurate, affordable, and accessible COVID-19 diagnosis.
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影响因子: 16.6
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发表时间: 2020-03-01
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DOI: 10.1371/journal.pone.0238089
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期刊: PLOS ONE
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