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ARS Home » Midwest Area » Ames, Iowa » National Animal Disease Center » Virus and Prion Research » Research » Publications at this Location » Publication #361034

Research Project: Intervention Strategies to Control Influenza A Virus Infection in Swine

Location: Virus and Prion Research

Title: Detection and titration of Influenza A virus neuraminidase inhibiting (NAI) antibodies using an enzyme-linked lectin assay (ELLA)

Author
item KAPLAN, BRYAN - Oak Ridge Institute For Science And Education (ORISE)
item Vincent, Amy

Submitted to: Animal Influenza Virus
Publication Type: Book / Chapter
Publication Acceptance Date: 11/26/2019
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: The neuraminidase (NA) of Influenza A viruses (IAV) is a structurally and antigenically important envelope glycoprotein. There are eleven known subtypes of NA of which two, N1 and N2, circulate in swine. The sialidase activity of NA is required for the release of nascent virus particles from infected cell membranes and inhibition of NA enzymatic activity can significantly reduce virus titers and duration of infection. Efforts to improve IAV vaccine technology in humans have focused on the generation of neuraminidase inhibiting (NAI) antibodies and should be considered in swine as well. The enzyme-linked lectin assay (ELLA) conducted in 96-well plates has enabled high-throughput analysis of serum samples for NAI antibody titers. Through the use of reverse genetics, custom antigen panels and antisera can be generated to encompass the antigenically diverse population of NA that circulate in swine. The ELLA is a robust method to assess NAI antibody titers and characterize the antigenic difference between NA antigens.