Wang Youtao, Wang Shengkui, Liu Tong, Tu Wenji, Li Wengui, Dong Guodong, Xu Cong, Qin Bo, Liu Kaihua, Yang Jie, Chai Jun, Shi Xianwei, Zhang Yifang
College of Animal Science and Technology, Yunnan Agricultural University, Kunming, Yunnan Province, China.
Center for Animal Disease Control and Prevention of Yunnan Province, Kunming, Yunnan Province, China.
PLoS One. 2015 Aug 5;10(8):e0135085. doi: 10.1371/journal.pone.0135085. eCollection 2015.
Bovine tuberculosis (BTB) is a significant veterinary and financial problem in many parts of the world. Associations between specific host genes and susceptibility to mycobacterial infections, such as tuberculosis, have been reported in several species. The objective of this study was to identify and evaluate the relationship of single-nucleotide polymorphisms (SNPs) in the CARD15 gene with susceptibility to BTB in Chinese Holstein cows. DNA samples from 201 Chinese Holstein cows (103 cases and 98 controls) were collected from Kunming City, Yuxi City, and Dali City in China. SNPs in the CARD15 gene were assessed using polymerase chain reaction (PCR) and restriction fragment length polymorphism-polymerase chain reaction (RFLP-PCR). Case-control association testing and statistical analysis identified six SNPs associated with susceptibility to BTB in Chinese Holstein cows. The frequency of genotypes C/T, A/G, A/G, A/G, C/T, and A/G in E4 (-37), 208, 1644, 1648, 1799, and E10 (+107), respectively, was significantly higher in cases than in controls, and also the alleles C, A, A, G, T, and A, respectively, were associated with a greater relative risk in cases than in controls. The distribution of two haplotypes, TGGACA and CAGACA, was significantly different between cases and controls. Overall, this case-control study suggested that E4 (-37)(C/T), 208(A/G), 1644(A/G), 1648(A/G), 1799(C/T), and E10 (+107)(A/G) in the CARD15 gene were significantly associated with susceptibility to BTB in Chinese Holstein cows and that haplotypes TGGACA and CAGACA could be used as genetic markers in marker-assisted breeding programs for breeding cows with high resistance to BTB.
牛结核病(BTB)在世界许多地区都是一个重大的兽医和经济问题。在几个物种中都报道了特定宿主基因与对分枝杆菌感染(如结核病)易感性之间的关联。本研究的目的是鉴定和评估中国荷斯坦奶牛CARD15基因单核苷酸多态性(SNP)与牛结核病易感性的关系。从中国昆明市、玉溪市和大理市收集了201头中国荷斯坦奶牛(103例病例和98例对照)的DNA样本。使用聚合酶链反应(PCR)和限制性片段长度多态性-聚合酶链反应(RFLP-PCR)评估CARD15基因中的SNP。病例对照关联测试和统计分析确定了6个与中国荷斯坦奶牛牛结核病易感性相关的SNP。在E4(-37)、208、1644、1648、1799和E10(+107)位点,基因型C/T、A/G、A/G、A/G、C/T和A/G的频率在病例组中显著高于对照组,等位基因C、A、A、G、T和A在病例组中的相对风险也高于对照组。两种单倍型TGGACA和CAGACA在病例组和对照组之间的分布有显著差异。总体而言,这项病例对照研究表明,CARD15基因中的E4(-37)(C/T)、208(A/G)、1644(A/G)、1648(A/G)、1799(C/T)和E10(+107)(A/G)与中国荷斯坦奶牛牛结核病易感性显著相关,单倍型TGGACA和CAGACA可作为标记辅助育种计划中的遗传标记,用于培育对牛结核病具有高抗性的奶牛。