A plasmon-assisted fluoro-immunoassay using gold nanoparticle-decorated carbon nanotubes for monitoring the influenza virus

作者：Lee Jaewook; Ahmed Syed Rahin; Oh Sangjin; Kim Jeonghyo; Suzuki Tetsuro; Parmar Kaushik; Park Simon S; Lee Jaebeom; Park Enoch Y

来源：Biosensors and Bioelectronics, 2015, 64: 311-317.

DOI：10.1016/j.bios.2014.09.021

• Plasmon-assisted fluoro-immunoassay
• Gold nanoparticle-decorated carbon nanotube
• CdTe quantum dot
• Influenza virus detection platform
• Plasmonic resonance energy transfer

A plasmon-assisted fluoro-immunoassay (PAFI) was developed for the detection of the influenza virus by using Au nanoparticle (Au NP)-decorated carbon nanotubes (AuCNTs) that were synthesized using phytochemical composites at room temperature in deionized water. Specific antibodies (Abs) against the influenza virus were conjugated onto the surface of AuCNTs and cadmium telluride quantum dots (QDs), which had a photoluminescence intensity that varied as a function of virus concentration and a detection limit of 0.1 pg/mL for all three types of influenza viruses examined. The clinically isolated influenza viruses (A/Yokohama/110/2009 (H3N2)) were detected in the range of 50-10,000 PFU/mL, with a detection limit of 50 PFU/mL. From a series of proof-of-concept and clinical experiments, the developed PAFI biosensing system provided robust signal production and enhancement, as well as an excellent selectivity and sensitivity for influenza viruses. This nanoparticle-based technique could be potentially developed as an efficient detection platform for the influenza virus.

• 出版日期2015-2-15