N-protein presents early in blood, dried blood and saliva during asymptomatic and symptomatic SARS-CoV-2 infection.
N-protein presents early in blood, dried blood and saliva during asymptomatic and symptomatic SARS-CoV-2 infection.
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DOI:
10.1038/s41467-021-22072-9
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发表时间:
2021-03-26
影响因子:
16.6
通讯作者:
Ball AJ
中科院分区:
文献类型:
--
作者:
Shan D;Johnson JM;Fernandes SC;Suib H;Hwang S;Wuelfing D;Mendes M;Holdridge M;Burke EM;Beauregard K;Zhang Y;Cleary M;Xu S;Yao X;Patel PP;Plavina T;Wilson DH;Chang L;Kaiser KM;Nattermann J;Schmidt SV;Latz E;Hrusovsky K;Mattoon D;Ball AJ
The COVID-19 pandemic continues to have an unprecedented impact on societies and economies worldwide. There remains an ongoing need for high-performance SARS-CoV-2 tests which may be broadly deployed for infection monitoring. Here we report a highly sensitive single molecule array (Simoa) immunoassay in development for detection of SARS-CoV-2 nucleocapsid protein (N-protein) in venous and capillary blood and saliva. In all matrices in the studies conducted to date we observe >98% negative percent agreement and >90% positive percent agreement with molecular testing for days 1–7 in symptomatic, asymptomatic, and pre-symptomatic PCR+ individuals. N-protein load decreases as anti-SARS-CoV-2 spike-IgG increases, and N-protein levels correlate with RT-PCR Ct-values in saliva, and between matched saliva and capillary blood samples. This Simoa SARS-CoV-2 N-protein assay effectively detects SARS-CoV-2 infection via measurement of antigen levels in blood or saliva, using non-invasive, swab-independent collection methods, offering potential for at home and point of care sample collection. Here the authors develop a single molecule array (Simoa) immunoassay for detection of SARS-CoV-2 nucleocapsid protein in venous and dried capillary blood as well as saliva. The assay shows good performance in symptomatic, asymptomatic, and pre-symptomatic PCR+ individuals.
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影响因子:
82.9
作者:
Long, Quan-Xin;Liu, Bai-Zhong;Huang, Ai-Long
通讯作者:
Huang, Ai-Long
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Norman, Maia;Gilboa, Tal;Walt, David R.
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Walt, David R.
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通讯作者:
Krammer F
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Leung, Gabriel M.
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Walt, David R.