Development of a rapid test for detection of foot-and-mouth disease virus specific antibodies using gold nanoparticles

  • Beenu Jain
  • Upendra Lambe
  • Anuj Tewari
  • Surender Kumar Kadian
  • Minakshi Prasad
Original Article
  • 9 Downloads

Abstract

Foot and mouth disease is an economically important transboundary disease of wildlife and cloven hoofed animals including ruminants. In the absence of vaccination, detection of antibodies against structural proteins (SPs) of foot-and-mouth disease virus is an indicator of infection. In the present study, a rapid dot blot assay using gold nanoparticlees was developed for the detection of antibodies against SPs of FMDV. Commercially available FMD vaccine was used as a source of FMD antigen. After the synthesis of gold nanoparticles (GNPs), the GNP-dot blot assay was tested and was found very sensitive, as the detection of antibody was up to 10−4 of serum dilution. The GNP-dot assay was found specific as it didn’t give dot with normal horse sera, fetal bovine sera and neonatal bovine calf serum samples when tested at 10−3 working dilution. When 30 serum samples from post-vaccinated buffaloes were tested at dilution of 10−3, all the samples were found positive with the variable intensity of dot. The synthesized GNPs and conjugated GNPS with antibody were characterized for their absorption limit, for their stability and for their approximate size. These characterized conjugated and non-conjugated GNPs were also analyzed by Transmission electron microscopy and Scanning electron microscopy. The GNP dot blot assay developed in this work gave promising results using vaccine antigen and can form an important tool for rapid diagnosis of FMD in FMD free countries, zones free of FMD and during last stage of FMD eradication when FMD vaccination will be withdrawn.

Keywords

Foot-and-mouth disease virus Gold nano particles GNP-dot blot Transmission electron microscopy Scanning electron microscopy 

Notes

Acknowledgements

We are thankful to all the field veterinarians and their staff for providing us the field samples for the validation of GNP assay. We are also thankful to Dr. Ashok Kumar Mohanty, Principal scientist, Animal biotechnology centre, National Dairy Research Institute, Karnal, Haryana, India for providing us anti-bovine IgG. We express our hearfelt gratitude to Dr Neeraj Dilbaghi, Professor, Nanobiotechnology, Guru Jambeshwar University of Science and Technology, Hisar, India for his help in characterisation of gold nanoparticles.

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Copyright information

© Indian Virological Society 2018

Authors and Affiliations

  1. 1.Department of Veterinary Microbiology, College of Veterinary SciencesLala Lajpat Rai University of Veterinary and Animal SciencesHisarIndia
  2. 2.Department of Animal Biotechnology, College of Veterinary SciencesLala Lajpat Rai University of Veterinary and Animal SciencesHisarIndia
  3. 3.Department of Veterinary Microbiology, College of Veterinary SciencesGovind Ballabh Pant University of Agriculture and TechnologyPantnagarIndia

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