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Heritability and genome-wide association study of vaccine-induced immune response in Beagles: A pilot study
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Heritability and genome-wide association study of vaccine-induced immune response in Beagles: A pilot study
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Journal Article
Heritability and genome-wide association study of vaccine-induced immune response in Beagles: A pilot study
2024
Overview
•The immune response to vaccination is moderately heritable in dogs.•Many SNPs of low to high effect contribute to vaccine-induced immune response.•Genes involving the spliceosome may play a role in vaccine-induced immune response.
Both genetic and non-genetic factors contribute to individual variation in the immune response to vaccination. Understanding how genetic background influences variation in both magnitude and persistence of vaccine-induced immunity is vital for improving vaccine development and identifying possible causes of vaccine failure. Dogs provide a relevant biomedical model for investigating mammalian vaccine genetics; canine breed structure and long linkage disequilibrium simplify genetic studies in this species compared to humans. The objective of this study was to estimate the heritability of the antibody response to vaccination against viral and bacterial pathogens, and to identify genes driving variation of the immune response to vaccination in Beagles. Sixty puppies were immunized following a standard vaccination schedule with an attenuated combination vaccine containing antigens for canine adenovirus type 2, canine distemper virus, canine parainfluenza virus, canine parvovirus, and four strains of Leptospira bacteria. Serum antibody measurements for each viral and bacterial component were measured at multiple time points. Heritability estimations and GWAS were conducted using SNP genotypes at 279,902 markers together with serum antibody titer phenotypes. The heritability estimates were: (1) to Leptospira antigens, ranging from 0.178 to 0.628; and (2) to viral antigens, ranging from 0.199 to 0.588. There was not a significant difference between overall heritability of vaccine-induced immune response to Leptospira antigens compared to viral antigens. Genetic architecture indicates that SNPs of low to high effect contribute to immune response to vaccination. GWAS identified two genetic markers associated with vaccine-induced immune response phenotypes. Collectively, these findings indicate that genetic regulation of the immune response to vaccination is antigen-specific and influenced by multiple genes of small effect.
Publisher
Elsevier Ltd,Elsevier Limited
Subject
/ Adenoviruses, Canine - genetics
/ Animals
/ Antigens
/ Bacteria
/ Canine
/ Distemper Virus, Canine - genetics
/ Dog Diseases - prevention & control
/ Dogs
/ Genes
/ Genetics
/ Genome-wide association studies
/ Genome-Wide Association Study
/ Genomes
/ Humans
/ Immunity
/ Mammals
/ Serology
/ Single-nucleotide polymorphism
/ species
/ Twins
/ Vaccines
/ Viruses
