Bipolar silica nanochannel array confined electrochemiluminescence for ultrasensitive detection of SARS-CoV-2 antibody.

Bipolar silica nanochannel array confined electrochemiluminescence for ultrasensitive detection of SARS-CoV-2 antibody.
复制标题

双极性二氧化硅纳米通道阵列限制电化学发光用于超灵敏检测 SARS-CoV-2 抗体

DOI:
10.1016/j.bios.2022.114563
复制
发表时间:
2022-11-01
影响因子:
12.6
通讯作者:
--
中科院分区:
工程技术1区
文献类型:
--
作者:

文献摘要

参考文献

被引文献

相似文献

对冠状病毒病(2019)(COVID-19)感染的超灵敏、特异性和早期识别对于控制病毒传播至关重要,并且仍然是一个全球公共卫生问题。在此,我们提出了一种新的针对严重急性呼吸综合征冠状病毒2的固态电化学发光(ECL)平台首次在氧化铟锡(ITO)电极上制备了双极性二氧化硅纳米通道阵列(bp-SNA),稳定地限制了三聚氰胺(tris)的电化学发光(ECL)探针(2,2 ′-联吡啶)钌(Ru(bpy)32+)在双静电力作用下的电化学行为。bp-SNA由具有不对称表面电荷的紧密堆积的双层二氧化硅纳米通道阵列(SNA)组成,即内部带负电荷的SNA(n-SNA)和外部带正电荷的SNA(p-SNA),用作“静电锁”以富集和稳定阳离子Ru(bpy)32+探针而不从电极表面泄漏。将SARS-CoV-2刺突蛋白固定在Ru(bpy)32+限制性固态电化学发光平台(Ru@bp-SNA)上,可实现SARS-CoV-2 IgG抗体的检测。在通过免疫识别捕获目标SARS-CoV-2 IgG后,形成的免疫复合物将阻断纳米通道,导致共反应物(三正丙胺,TPrA)的扩散受阻,并进一步产生降低的ECL信号。开发的固态ECL免疫传感器能够以宽线性范围(5 pg mL−1至1 μg mL−1)、低检测限(2.9 pg mL−1)和短孵育时间(30 min)测定SARS-CoV-2 IgG。此外,该传感器还可对真实的血清样品中SARS-CoV-2 IgG进行准确分析。
Ultrasensitive, specific, and early identification of Coronavirus Disease (2019) (COVID-19) infection is critical to control virus spread and remains a global public health problem. Herein, we present a novel solid-state electrochemiluminescence (ECL) platform targeting severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibody with rapidity and ultrahigh sensitivity, in which a bipolar silica nanochannel array (bp-SNA) is fabricated on indium tin oxide (ITO) electrode for the first time to stably confine the ECL probe of tris(2,2′-bipyridyl) ruthenium (Ru(bpy)32+) under dual electrostatic force. The bp-SNA consists of tightly packed bilayer silica nanochannel array (SNA) with asymmetric surface charges, namely an inner negatively charged SNA (n-SNA) and an outer positively charged SNA (p-SNA), serving as an “electrostatic lock” to enrich and stabilize the cationic Ru(bpy)32+ probe without leakage from the electrode surface. The detection of SARS-CoV-2 IgG antibody could be realized via immobilization of SARS-CoV-2 spike protein on the utmost of Ru(bpy)32+-confined solid-state ECL platform (Ru@bp-SNA). Upon the capture of target SARS-CoV-2 IgG by immune recognition, the formed immunocomplex will block the nanochannel, leading to the hindered diffusion of the co-reactant (tri-n-propylamine, TPrA) and further producing a decreased ECL signal. The developed solid-stated ECL immunosensor is able to determine SARS-CoV-2 IgG with a wide linear range (5 pg mL−1 to 1 μg mL−1), a low limit-of-detection (2.9 pg mL−1), and a short incubation time (30 min). Furthermore, accurate analysis of SARS-CoV-2 IgG in real serum samples is also obtained by the sensor.
DOI: 10.1056/nejmoa2001316
发表时间: 2020-03-26
影响因子: 158.5
作者:
Li, Qun;Guan, Xuhua;Feng, Zijian
通讯作者: Feng, Zijian
DOI: 10.1021/ac070811m
发表时间: 2007-10-01
影响因子: 7.4
作者:
Bertoncello, Paolo;Dennany, Lynn;Unwin, Patrick R.
通讯作者: Unwin, Patrick R.
DOI: 10.1016/j.electacta.2017.03.220
发表时间: 2017-05-20
影响因子: 6.6
作者:
Giordano, Gianmarco;Vila, Neus;Walcarius, Alain
通讯作者: Walcarius, Alain
DOI: 10.1021/cm8029664
发表时间: 2009-02-24
影响因子: 8.6
作者:
Goux, Aurelie;Etienne, Mathieu;Walcarius, Alain
通讯作者: Walcarius, Alain
DOI: 10.1166/jnn.2009.se39
发表时间: 2009-04-01
影响因子: --
作者:
Etienne, Mathieu;Goux, Aurelie;Walcarius, Alain
通讯作者: Walcarius, Alain