Archives of Virology

, Volume 158, Issue 5, pp 993–1001

Development of a liquid-phase blocking ELISA based on foot-and-mouth disease virus empty capsid antigen for seromonitoring vaccinated animals

  • S. H. Basagoudanavar
  • M. Hosamani
  • R. P. Tamil Selvan
  • B. P. Sreenivasa
  • P. Saravanan
  • B. K. Chandrasekhar Sagar
  • R. Venkataramanan
Original Article

DOI: 10.1007/s00705-012-1567-5

Cite this article as:
Basagoudanavar, S.H., Hosamani, M., Tamil Selvan, R.P. et al. Arch Virol (2013) 158: 993. doi:10.1007/s00705-012-1567-5

Abstract

In foot-and-mouth disease (FMD) control programme, liquid-phase blocking ELISA (LPBE) is widely used to assay vaccine-induced seroconversion. Currently, the assay utilizes inactivated FMD virus antigen for the detection of antibodies in serum samples. To develop a non-infectious substitute for the antigen in LPBE, we expressed the structural polypeptide of FMDV (serotype A) using a baculovirus expression system, and show that inclusion of viral 3C with reduced protease activity resulted in a higher yield of structural proteins. Structural proteins expressed in insect cells assembled into empty virus-like particles (VLPs) and showed antigenicity comparable to chemically inactivated FMDV. Screening of serum samples from FMD-vaccinated cattle showed that the test performance of VLP-LPBE had a correlation of 0.89 with conventional inactivated virus antigen LPBE. The VLP-LPBE developed here demonstrates the diagnostic application of recombinant FMDV VLPs in monitoring seroconversion following FMD vaccination.

Copyright information

© Springer-Verlag Wien 2012

Authors and Affiliations

  • S. H. Basagoudanavar
    • 1
  • M. Hosamani
    • 1
  • R. P. Tamil Selvan
    • 1
  • B. P. Sreenivasa
    • 1
  • P. Saravanan
    • 1
  • B. K. Chandrasekhar Sagar
    • 2
  • R. Venkataramanan
    • 1
  1. 1.Indian Veterinary Research InstituteBangaloreIndia
  2. 2.Department of NeuropathologyNIMHANSBangaloreIndia