PCR-based detection of hereditary mutations in,, andamong native Korean dog breeds.

Abstract

IMPORTANCE: Understanding the susceptibility of native Korean dogs to genetic diseases is important for animal welfare and breeding. However, little is known regarding the segregation of genetic variations associated with genetic diseases among native Korean dog breeds, highlighting the need for further research in this area. OBJECTIVE: A genome-wide analysis was conducted using the available whole genome sequencing (WGS) results of DongGyeongi, Sapsaree, and Jindo dogs to evaluate the presence of disease-associated mutations and develop polymerase chain reaction (PCR)-based typing methods. METHODS: Using WGS data from 32 individuals of DongGyeongi, Sapsaree, and Jindo dogs, variant calling was used to identify variants associated with canine genetic diseases in Online Mendelian Inheritance in Animals. Additionally, allele-specific PCR-based typing methods for the identified mutations were developed. RESULTS: Four different variants were identified: NC_006583.3:g.54192143C>G in thegene associated with the bobtail phenotype, NC_006585.3:g.69456869G>T inassociated with urolithiasis, NC_006591.3:g.6048201_6048202insG inassociated with abortion, and NC_006607.3:g.48121642G>A inassociated with coat color dilution. Themutant allele was present in all breeds (frequency = 0.33), whereas themutant allele was found only in DongGyeongi (0.18) and Sapsaree breeds (0.20). Theandmutant alleles were specific to DongGyeongi (0.20 and 0.18, respectively). CONCLUSIONS AND RELEVANCE: Genome-wide analysis was conducted to identify the causative mutations of genetic diseases in native Korean dogs. The observed frequencies of the identified variants differed among native Korean dog breeds. The typing methods used to detect variant alleles in this study will contribute to improving the genetic robustness of native Korean dog breeds.