Bovine tuberculosis (bTB) is a disease of cattle that represents a risk to public health and causes severe economic losses to the livestock industry. Recently, genetic studies, like genome-wide association studies (GWAS) have greatly improved the investigation of complex diseases identifying thousands of disease-associated genomic variants. Here, we present evidence of genetic variants associated with resistance to TB in Mexican dairy cattle using a case-control approach with a selective DNA pooling experimental design. A total of 154 QTLRs (quantitative trait loci regions) at 10% PFP (proportion of false positives), 42 at 5% PFP and 5 at 1% PFP have been identified, which harbored 172 annotated genes. On BTA13, five new QTLRs were identified in the MACROD2 and KIF16B genes, supporting their involvement in resistance to bTB. Six QTLRs harbor seven annotated genes that have been previously reported as involved in immune response against Mycobacterium spp: BTA (Bos taurus autosome) 1 (CD80), BTA3 (CTSS), BTA 3 (FCGR1A), BTA 23 (HFE), BTA 25 (IL21R), and BTA 29 (ANO9 and SIGIRR). We identified novel QTLRs harboring genes involved in Mycobacterium spp. immune response. This is a first screening for resistance to TB infection on Mexican dairy cattle based on a dense SNP (Single Nucleotide Polymorphism) chip.
Genome-Wide Association Study in Mexican Holstein Cattle Reveals Novel Quantitative Trait Loci Regions and Confirms Mapped Loci for Resistance to Bovine Tuberculosis / S. González-Ruiz, M.G. Strillacci, M. Durán-Aguilar, G.J. Cantó-Alarcón, S.E. Herrera-Rodríguez, A. Bagnato, L.F. Guzmán, F. Milián-Suazo, S.I. Román-Ponce. - In: ANIMALS. - ISSN 2076-2615. - 9:9(2019 Sep).
|Titolo:||Genome-Wide Association Study in Mexican Holstein Cattle Reveals Novel Quantitative Trait Loci Regions and Confirms Mapped Loci for Resistance to Bovine Tuberculosis|
STRILLACCI, MARIA GIUSEPPINA (Secondo) (Corresponding)
ROMAN PONCE, SERGIO IVAN (Ultimo) (Corresponding)
|Parole Chiave:||DNA pooling; QTL; SNP; bovine tuberculosis resistance; genome-wide association study|
|Settore Scientifico Disciplinare:||Settore AGR/17 - Zootecnica Generale e Miglioramento Genetico|
|Data di pubblicazione:||set-2019|
|Data ahead of print / Data di stampa:||30-ago-2019|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.3390/ani9090636|
|Appare nelle tipologie:||01 - Articolo su periodico|