Sialic Acid Activated Gold Nanoparticles as Rapid Affordable Reagent for Peste Des Petits Ruminants (PPR) Virus...

Area of Science:

• Veterinary Virology
• Nanotechnology in Diagnostics
• Agricultural Animal Health

Background:

• Contagious diseases in small ruminants (goats, sheep) pose significant threats to the agricultural community.
• Peste des petits ruminants virus (PPRV) requires rapid detection for effective disease control and animal isolation.
• The hemagglutinin (H) protein of PPRV specifically binds to sialic acid receptors.

Purpose of the Study:

• To develop a rapid and sensitive diagnostic method for Peste des petits ruminants virus.
• To utilize gold nanoparticles functionalized with sialic acid for PPRV detection.
• To compare the efficacy of the new method with existing diagnostic techniques.

Main Methods:

• Synthesis of sialic acid-reduced and stabilized gold nanoparticles (AuNPs) using a one-pot method without chemical modification of sialic acid.
• Demonstration of target-specific aggregation of sialic acid-AuNPs with PPRV particles through hemagglutinin-sialic acid binding.
• Evaluation of detection limits and speed compared to standard monoclonal antibody-based tests.

Main Results:

• Sialic acid-AuNPs exhibited specific aggregation upon binding with PPRV.
• The PPR virus was detectable at a dilution of 10^-6 using the sialic acid-AuNPs assay.
• Detection of PPRV was achieved in less than 2 minutes, significantly faster than standard tests.

Conclusions:

• Sialic acid-functionalized gold nanoparticles offer a rapid and effective platform for Peste des petits ruminants virus detection.
• This nanotechnology-based approach provides a faster alternative to conventional diagnostic methods, aiding in swift disease management.
• The developed assay holds promise for improving animal health surveillance and control strategies for PPRV in agriculture.