Detection of HIV-1 antigen by quartz crystal microbalance using gold nanoparticles

被引：31
|
作者：
Tan Nhiem Ly [1 ]
Park, Sangkwon [1 ]
Park, Sang Joon [2 ]
机构：
[1] Dongguk Univ, Dept Chem & Biochem Engn, 30,Pildong Ro 1 Gil, Seoul 04620, South Korea
[2] Gachon Univ, Dept Chem & Biol Enhgineering, Songnam 461701, Gyeonggi, South Korea
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2016年 / 237卷
关键词：
HIV-1; antigen; Quartz crystal microbalance; Gold nanoparticles; Early detection; Signal amplification; STREPTAVIDIN; PERFORMANCE;
D O I：
10.1016/j.snb.2016.06.112
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In the current exploratory study, a quartz crystal microbalance (QCM) technique was employed to detect HIV-1 antigen at a very low concentration using gold nanoparticles (Au NPs) as a signal enhancer. Colloidal Au NPs were synthesized using a reduction method followed by streptavidin functionalization. HIV-1 antigen was captured by a polyclonal antibody on the QCM surface that had been previously treated with 11-mercaptoundecanoicacid (MUA) and streptavidin. The Au NPs with a high mass amplified the detection signal, making HIV-1 antigen detection possible even in the window period of HIV infection. In addition, the effect of Au NP size was also investigated to elucidate the optimal size of the enhancer. The signal performance is discussed in terms of mass effect and conjugate efficiency. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：452 / 458
页数：7
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