Label-Free Digital Detection of Intact Virions by Enhanced Scattering Microscopy.
Label-Free Digital Detection of Intact Virions by Enhanced Scattering Microscopy.
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DOI:
10.1021/jacs.1c09579
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发表时间:
2022-02-02
影响因子:
15
通讯作者:
Cunningham, Brian T.
中科院分区:
文献类型:
--
作者:
Li, Nantao;Wang, Xiaojing;Tibbs, Joseph;Che, Congnyu;Peinetti, Ana Sol;Zhao, Bin;Liu, Leyang;Barya, Priyash;Cooper, Laura;Rong, Lijun;Wang, Xing;Lu, Yi;Cunningham, Brian T.
Several applications in health diagnostics, food, safety, and environmental monitoring require rapid, simple, selective, and quantitatively accurate viral load monitoring. Here, we introduce the first label-free biosensing method that rapidly detects and quantifies intact virus in human saliva with single-virion resolution. Using pseudotype SARS-CoV-2 as a representative target, we immobilize aptamers with the ability to differentiate active from inactive virions on a photonic crystal, where the virions are captured through affinity with the spike protein displayed on the outer surface. Once captured, the intrinsic scattering of the virions is amplified and detected through interferometric imaging. Our approach analyzes the motion trajectory of each captured virion, enabling highly selective recognition against nontarget virions, while providing a limit of detection of 1 × 103 copies/mL at room temperature. The approach offers an alternative to enzymatic amplification assays for point-of-collection diagnostics.
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影响因子:
16.6
作者:
Smyrlaki I;Ekman M;Lentini A;Rufino de Sousa N;Papanicolaou N;Vondracek M;Aarum J;Safari H;Muradrasoli S;Rothfuchs AG;Albert J;Högberg B;Reinius B
通讯作者:
Reinius B
影响因子:
8.9
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Taylor AB;Zijlstra P
通讯作者:
Zijlstra P
影响因子:
17.1
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通讯作者:
Oh, Eunkeu
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4.9
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Zhang, Liyun;Fang, Xiaona;Luo, Zhaofeng
通讯作者:
Luo, Zhaofeng
影响因子:
14.8
作者:
Sefah, Kwame;Shangguan, Dihua;Tan, Weihong
通讯作者:
Tan, Weihong