The detection of bovine viral diarrhea virus (BVDV), which is a pathogen inducing fatal gastrointestinal disease in cattle, is becoming a momentous issue in the livestock farm. In that, BVDV is related to inapparent infection and various diseases with high transmissibility; it has also led to considerable economic losses. In this study, a simple dot-blotting method was devised to construct a rapid screening system for BVDV. Based on the BVDV-specific bioreceptors, it was anchored on the gold nanoparticles (AuNPs) to generate the seeding sites for signaling; then the signals were amplified by adopting the overgrowth of copper nano-polyhedral shells on AuNPs. The developed detection system shows a low detection limit of 4.4 copies per mL, and even this could be distinguished with naked eyes. These results indicate that the designed nanobiosensor possesses not only high sensitivity and selectivity but also potential usage on a point-of-care testing platform for BVDV.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9056175PMC
http://dx.doi.org/10.1039/d0ra03677cDOI Listing

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