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ARS Home » Northeast Area » Orient Point, New York » Plum Island Animal Disease Center » Foreign Animal Disease Research » Research » Publications at this Location » Publication #340504

Research Project: Intervention Strategies to Support the Global Control and Eradication of Foot-and-Mouth Disease Virus (FMDV)

Location: Foreign Animal Disease Research

Title: Enhanced sensitivity in detection of antiviral antibody responses using biotinylation of foot-and-mouth disease virus (FMDV) capsids

Author
item Kenney, Mary
item Waters, Ryan - The Pirbright Institute
item Rieder, Aida - Elizabeth
item Pega, Juan - Instituto Nacional De Tecnologia Agropecuaria
item Perez-filguera, Mariano - Instituto Nacional De Tecnologia Agropecuaria
item Golde, William

Submitted to: Journal of Immunological Methods
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 7/5/2017
Publication Date: 11/1/2017
Citation: Kenney, M.A., Waters, R.A., Rieder, A.E., Pega, J., Perez-Filguera, M., Golde, W.T. 2017. Enhanced sensitivity in detection of antiviral antibody responses using biotinylation of foot-and-mouth disease virus (FMDV) capsids. Journal of Immunological Methods. 450:1-9. https://doi.org/10.1016/j.jim.2017.07.001.
DOI: https://doi.org/10.1016/j.jim.2017.07.001

Interpretive Summary: Foot-and-mouth disease virus (FMDV) is a small RNA virus that causes devastating disease in cattle and other cloven-hoofed animals worldwide. This study describes a novel method to examine the immune response to FMDV infection or vaccination. It also describes an novel procedure to label the virus and to detect anti-virus antibodies.

Technical Abstract: Analysis of the immune response to infection of livestock by foot-and-mouth disease virus (FMDV) is most often reported as the serum antibody response to the virus. While measurement of neutralizing antibody has been sensitive and specific, measurements of the quality of the antibody response are less robust. Determining the immunoglobulin (Ig) isotype of the serum antibody response provides a deeper understanding of the biology of the response and more sensitive methods for these assays will facilitate analyses of B cell mediated immunity. We tested the hypothesis that using the virus as the molecular probe could be achieved by adding tags to the surface of the FMDV capsid, and that would enhance sensitivity in assays for anti-FMDV antibody responses. The use of a FLAG-tagged virus in these assays failed to yield improvement whereas chemically biotinylating the virus capsid resulted in significant enhancement of the signal. Here we describe methods using biotinylated virus for measuring anti-viral antibody in serum and antibody secreting cells (ASCs) in blood that are sensitive and specific. Finally, we describe using the biotinylated virus in flow cytometry where such assays should greatly enhance the analysis of anti-virus antibody producing B cells, allowing the investigator to focus on only the FMDV specific B cells when analyzing the development of the B cell response to either infection or vaccination.