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Detection of avian influenza virus subtype H5 using a biosensor based on imaging ellipsometry

2009; Elsevier BV; Volume: 25; Issue: 6 Linguagem: Inglês

10.1016/j.bios.2009.10.030

1873-4235

Cai Qi, Xinsheng Tian, She Chen, Jinghua Yan, Zhen Cao, Kegong Tian, George F. Gao, Gang Jin,

Respiratory viral infections research

A novel method is reported for the detection of avian influenza virus subtype H5 using a biosensor based on high spatial resolution imaging ellipsometry (IE). Monoclonal antibodies specific to H5 hemagglutinin protein were immobilized on silicon wafers and used to capture virus particles. Resultant changes on the surface of the wafers were visualized directly in gray-scale on an imaging ellipsometry image. This preliminary study has shown that the assay is rapid and specific for the identification of avian influenza virus subtype H5. Compared with lateral-flow immunoassays, this biosensor not only has better sensitivity, but can also simultaneously perform multiplexed tests. These results suggest that this biosensor might be a valuable diagnostic tool for avian influenza virus detection.