Plasmon color-preserved gold nanoparticle clusters for high sensitivity detection of SARS-CoV-2 based on lateral flow immunoassay

链霉亲和素 胶体金 生物素化 表面等离子共振 检出限 免疫分析 纳米颗粒 纳米传感器 化学 等离子体子 材料科学 纳米技术 色谱法 生物素 光电子学 抗体 医学 生物化学 免疫学
作者
Hyun-Kyung Oh,Kihyeun Kim,Jinhee Park,Hyungsoon Im,Simon Maher,Min-Gon Kim
出处
期刊:Biosensors and Bioelectronics [Elsevier]
卷期号:205: 114094-114094 被引量:33
标识
DOI:10.1016/j.bios.2022.114094
摘要

Lateral flow immunoassays (LFI) have shown great promise for point-of-care (POC) sensing applications, however, its clinical translation is often hindered by insufficient sensitivity for early detection of diseases, including severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). This is mainly due to weak absorption signals of single gold nanoparticles (AuNPs). Here, we developed AuNP clusters that maintain the red color of isolated individual AuNPs, but increase the colorimetric readout to improve the detection sensitivity. The plasmon color-preserved (PLASCOP) AuNP clusters is simply made by mixing streptavidin-coated AuNP core with satellite AuNPs coated with biotinylated antibodies. The biotinylated antibody-streptavidin linker forms a gap size over 15 nm to avoid plasmon coupling between AuNPs, thus maintaining the plasmonic color while increasing the overall light absorption. LFI sensing using PLASCOP AuNP clusters composed of 40 nm AuNPs showed a high detection sensitivity for SARS-CoV-2 nucleocapsid proteins with a limit of detection (LOD) of 0.038 ng mL-1, which was 23.8- and 5.9-times lower value than that of single 15 nm and 40 nm AuNP conjugates, respectively. The PLASCOP AuNP clusters-based LFI sensing also shows good specificity for SARS-CoV-2 nucleocapsid proteins from other influenza and coronaviruses. In a clinical feasibility test, we demonstrated that SARS-CoV-2 particles spiked in human saliva could be detected with an LOD of 54 TCID50 mL-1. The developed PLASCOP AuNP clusters are promising colorimetric sensing reporters that present improved sensitivity in LFI sensing for broad POC sensing applications beyond SARS-CoV-2 detection.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
杨尚朋完成签到,获得积分10
2秒前
moonglow发布了新的文献求助10
3秒前
4秒前
6秒前
7秒前
8秒前
8秒前
10秒前
墨易完成签到,获得积分10
10秒前
kevin发布了新的文献求助10
10秒前
10秒前
11秒前
Luyao完成签到,获得积分10
11秒前
芥丶子完成签到,获得积分10
11秒前
zzz发布了新的文献求助10
12秒前
风中音响发布了新的文献求助30
13秒前
爱静静应助狗蛋采纳,获得10
13秒前
buno应助Sene采纳,获得10
14秒前
@你。完成签到 ,获得积分10
16秒前
NMZN发布了新的文献求助10
17秒前
HSS发布了新的文献求助10
17秒前
玉_往前走发布了新的文献求助10
18秒前
迷你的鹏飞完成签到,获得积分10
18秒前
20秒前
20秒前
无花果应助春杪采纳,获得10
21秒前
22秒前
NexusExplorer应助咪咪不吃糖采纳,获得10
23秒前
23秒前
Alina1874发布了新的文献求助10
23秒前
24秒前
25秒前
27秒前
27秒前
27秒前
28秒前
cc发布了新的文献求助10
29秒前
狗蛋完成签到,获得积分10
29秒前
壮观以松发布了新的文献求助10
29秒前
31秒前
高分求助中
Earth System Geophysics 1000
Co-opetition under Endogenous Bargaining Power 666
Medicina di laboratorio. Logica e patologia clinica 600
Sarcolestes leedsi Lydekker, an ankylosaurian dinosaur from the Middle Jurassic of England 500
《关于整治突出dupin问题的实施意见》(厅字〔2019〕52号) 500
Language injustice and social equity in EMI policies in China 500
mTOR signalling in RPGR-associated Retinitis Pigmentosa 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3212591
求助须知:如何正确求助?哪些是违规求助? 2861547
关于积分的说明 8129264
捐赠科研通 2527513
什么是DOI,文献DOI怎么找? 1361265
科研通“疑难数据库(出版商)”最低求助积分说明 643438
邀请新用户注册赠送积分活动 615776