Characterization of canine anti-mouse antibodies highlights that multiple strategies are needed to combat immunoassay interference

Author:

Bergman DanielORCID,Larsson Anders,Hansson-Hamlin Helene,Åhlén Emma,Holst Bodil Ström

Abstract

Abstract Immunoassays are widely used for detection and quantification of analytes in biological samples, but are vulnerable to analytical errors caused by interfering sample substances. Of particular interest are endogenous anti-animal antibodies that may bind to the immunoassay antibodies and cause erroneous test results. This phenomenon is a hazard to patient safety in both human and veterinary medicine. Here, we demonstrate that anti-mouse antibodies in dogs bind selectively to different regions of the murine IgG molecule, cross-react with IgG from different species, and consist of all major antibody classes present in canine serum (IgA, IgG and IgM). The antibody characteristics varied among individuals and their prevalence differed between two dog breeds. The selective binding to different IgG regions suggests that the antibodies might not originate from immunization through exposure to mice or other species. These findings show that canine anti-mouse antibodies are highly heterogeneous in nature and therefore require a combination of strategies to be counteracted.

Publisher

Springer Science and Business Media LLC

Subject

Multidisciplinary

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