A Visual Gene Array for the Detection of HSV-2 Based on Nanogold Probes

A visual HSV-2 detection gene array was developed based on nanogold probes。The specific primer and probe of HSV-2 were designed based on the highly conservative region of HSV-2 DNA polymerase gene and the HSV-2 PCR amplicon were labeled by biotin through PCR reaction．Amino-modified probes were spotted on an activated glass surface on which hybridized with the PCR amplicon．Subsequently, the streptavidin-nanogold was added to form the amplification system of the biotin-streptavidin-nanogold complex．At last, the step of silver staining amplified the signal of hybridization, Therefore it was easy to detect the HSV-2 by naked eyes．As little as 100fmol/L of HSV-2 amplicon could be detected on the array, The HSV-2 detection gene array can detect the HSV-2 virus infection with high sensitivity and low cost.