Related Experiment Video
Updated: Jun 10, 2026
10:05
High-throughput Detection Method for Influenza Virus
Published on: February 4, 2012
Influenza virus detection with pentabody-activated nanoparticles
Bin Mu1, Xinglu Huang, Pengcheng Bu
1National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road, Chaoyang District, 100101 Beijing, China.
Journal of Virological Methods
|August 3, 2010
Summary
This study introduces a new nanoparticle immunoassay for fast and sensitive avian influenza virus (AIV) detection. The assay uses magnetic and gold nanoparticles for enhanced AIV detection, offering a promising diagnostic tool.
Area of Science:
- Nanotechnology
- Immunotechnology
- Virology
Background:
- Avian influenza virus (AIV) poses a significant threat to poultry health and can cause zoonotic infections.
- Current diagnostic methods for AIV, such as double-antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA), may lack the required sensitivity and speed for rapid field detection.
- Development of novel detection strategies is crucial for timely and accurate diagnosis of AIV outbreaks.
Purpose of the Study:
- To develop a novel nanoparticle-based immunoassay for the sensitive and rapid detection of avian influenza virus (AIV).
- To conjugate a specific pentabody (pVHH3B) to magnetic nanoparticles (MNPs) for AIV capture and utilize gold nanoparticles (GNPs) labeled with a monoclonal antibody for detection.
- To evaluate the performance of the developed assay in terms of sensitivity and compare it with conventional methods.
Main Methods:
- Conjugation of AIV-specific pentabody (pVHH3B) to magnetic nanoparticles (MNPs) for target capture.
- Labeling of gold nanoparticles (GNPs) with anti-AIV mouse monoclonal antibody 3C8 for signal detection.
- Utilizing a magnetic field for separation of the nanoparticle-AIV complex and measuring the catalytic oxidation of hydroquinone by GNPs.
Main Results:
- The developed nanoparticle immunoassay demonstrated a concentration-dependent signal response upon incubation with AIV samples.
- The assay achieved a detection limit of 10 ng/ml for AIV.
- This detection limit is 10 times more sensitive compared to conventional double-antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA).
Conclusions:
- The combination of MNPs and the novel pentabody pVHH3B enables a highly sensitive assay for influenza viral detection.
- This nanoparticle-based immunoassay shows potential as a rapid, sensitive, and inexpensive diagnostic tool for infectious diseases like avian influenza.
- Further development could lead to practical applications in disease surveillance and control.
