Rapid detection of Cyprinid herpesvirus-3 (CyHV-3) using a gold nanoparticle-based hybridization assay

Journal of Virological Methods
Mona Saleh, Mansour El-Matbouli

Abstract

Cyprinid herpesvirus-3 (CyHV-3) is a highly infectious pathogen that causes fatal disease in common and koi carp Cyprinus carpio L. CyHV-3 detection is usually based on virus propagation or amplification of the viral DNA using the PCR or LAMP techniques. However, due to the limited susceptibility of cells used for propagation, it is not always possible to successfully isolate CyHV-3 even from tissue samples that have high virus titres. All previously described detection methods including PCR-based assays are time consuming, laborious and require specialized equipment. To overcome these limitations, gold nanoparticles (AuNPs) have been explored for direct and sensitive detection of DNA. In this study, a label-free colorimetric nanodiagnostic method for direct detection of unamplified CyHV-3 DNA using gold nanoparticles is introduced. Under appropriate conditions, DNA probes hybridize with their complementary target sequences in the sample DNA, which results in aggregation of the gold nanoparticles and a concomitant colour change from red to blue, whereas test samples with non complementary DNA sequences remain red. In this study, gold nanoparticles were used to develop and evaluate a specific and sensitive hybridization assay fo...Continue Reading

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Citations

Dec 15, 2015·Nanomedicine : Nanotechnology, Biology, and Medicine·Mohamed ShaalanMansour El-Matbouli
Aug 4, 2016·Journal of Aquatic Animal Health·Meagan A PrescottManoj K Pastey
Jun 9, 2018·BMC Veterinary Research·Michael GotesmanMansour El-Matbouli
May 14, 2020·International Journal of Molecular Sciences·Oganes AmbartsumyanElena Zavyalova
Feb 20, 2021·Materials Science for Energy Technologies·Victoria Xin Ting ZhaoXiaodong Zhou

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