title: Wingless-type MMTV integration site family member 2 (WNT2) gene is associated with resistance to MAP in faecal culture and antibody response in Holstein cattle.
abstract: Mycobacterium avium subspecies paratuberculosis (MAP) is a pathogenic bacterium responsible for the lethal Johne's disease in cattle. So far, several genome-wide association studies (GWAS) have been carried out to identify chromosomal regions highly associated with Johne's disease. The aim of this study was to investigate the genetic variability within a pool of seven genes (LAMB1, DLD, WNT2, PRDM1, SOCS5, PTGER4 and IL10) indicated by former GWAS/RNA-Seq studies as putatively associated with MAP infections and to achieve a confirmation study of association with paratuberculosis susceptibility in a population of 324 German Holstein cattle (162 cases MAP positive and 162 controls MAP negative) using ELISA and fecal cultural tests. SNP validation and genotyping information are provided, quick methods for allelic discrimination were set up and transcription factor binding analyses were performed. The rs43390642:G>TSNP in the WNT2 promoter region is associated with paratuberculosis susceptibility (P = 0.013), suggesting a protective role of the T allele (P = 0.043; odds ratio 0.50 [0.25-0.97]). The linkage disequilibrium with the DLD rs134692583:A>T might suggest a combined mechanism of action of these neighboring genes in resistance to MAP infection, which is also supported by a significant effect shown by the haplotype DLD(T) /WNT2(T) (P = 0.047). In silico analysis predicted rs43390642:G>T and rs134692583:A>T as essential parts of binding sites for the transcription factors GR, C/EBPβ and GATA-1, hence suggesting a potential influence on WNT2 and DLD gene expression. This study confirmed the region on BTA 4 (UMD 3.1: 50639460-51397892) as involved in tolerance/resistance to Johne's disease. In addition, this study clarifies the involvement of the investigated genes in MAP infection and contributes to the understanding of genetic variability involved in Johne's disease susceptibility.
authors: Laboratory of Animal Cytogenetics and Gene Mapping, National Research Council (CNR) of Italy, ISPAAM, via Argine 1085, 80147, Naples, Italy; Institute for Animal Breeding and Genetics, Justus-Liebig University, Ludwigstraße 21 B, 35390, Giessen, Germany.
authors: A
authors: A
authors: Pauciullo
authors: J
authors: J
authors: Küpper
authors: H
authors: H
authors: Brandt
authors: K
authors: K
authors: Donat
authors: L
authors: L
authors: Iannuzzi
authors: G
authors: G
authors: Erhardt
mesh_terms: D000818:Animals; D000917:Antibody Formation; D001665:Binding Sites / Q000235:genetics; D002417:Cattle / Q000235:genetics* / Q000382:microbiology; D002418:Cattle Diseases / Q000235:genetics* / Q000276:immunology; D004797:Enzyme-Linked Immunosorbent Assay / Q000662:veterinary; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D055106:Genome-Wide Association Study; D005838:Genotype; D006239:Haplotypes; D016927:Mycobacterium avium subsp. paratuberculosis; D010283:Paratuberculosis / Q000235:genetics* / Q000276:immunology; D020641:Polymorphism, Single Nucleotide; D014157:Transcription Factors / Q000378:metabolism
chemical_list: D014157:Transcription Factors
keywords: Johne's disease; MAP infection; WNT2 gene; friesian breed