美洲印第安人血清尿酸相关位点的精细定位和鉴定:“强壮之心家族研究”。
Fine mapping and identification of serum urate loci in American Indians: The Strong Heart Family Study.
机构信息
Department of Nutrition, and UNC Nutrition Research Institute, University of North Carolina at Chapel Hill, Kannapolis, NC, USA.
Biomedical and Translational Informatics, Geisinger, Danville, PA, USA.
出版信息
Sci Rep. 2019 Nov 29;9(1):17899. doi: 10.1038/s41598-019-52924-w.
While studies have reported genetic loci affecting serum urate (SU) concentrations, few studies have been conducted in minority populations. Our objective for this study was to identify genetic loci regulating SU in a multigenerational family-based cohort of American Indians, the Strong Heart Family Study (SHFS). We genotyped 162,718 single nucleotide polymorphisms (SNPs) in 2000 SHFS participants using an Illumina MetaboChip array. A genome-wide association analysis of SU was conducted using measured genotype analysis approach accounting for kinships in SOLAR, and meta-analysis in METAL. Our results showed strong association of SU with rs4481233, rs9998811, rs7696092 and rs13145758 (minor allele frequency (MAF) = 25-44%; P < 3 × 10) of solute carrier family 2, member 9 (SLC2A9) and rs41481455, rs2231142 and rs1481012 (MAF = 29%; p < 3 × 10) of ATP-binding cassette protein, subfamily G, member 2 (ABCG2). Carriers of G alleles of rs9998811, rs4148155 and rs1481012 and A alleles of rs4481233, rs7696092 and rs13145758 and rs2231142 had lower SU concentrations as compared to non-carriers. Genetic analysis of SU conditional on significant SLC2A9 and ABCG2 SNPs revealed new loci, nucleobindin 1 (NUCB1) and neuronal PAS domain protein 4 (NPAS4) (p <6× 10). To identify American Indian-specific SNPs, we conducted targeted sequencing of key regions of SLC2A9. A total of 233 SNPs were identified of which 89 were strongly associated with SU (p < 7.1 × 10) and 117 were American Indian specific. Analysis of key SNPs in cohorts of Mexican-mestizos, European, Indian and East Asian ancestries showed replication of common SNPs, including our lead SNPs. Our results demonstrate the association of SU with uric acid transporters in a minority population of American Indians and potential novel associations of SU with neuronal-related genes which warrant further investigation.
虽然有研究报道了影响血清尿酸 (SU) 浓度的遗传位点,但在少数人群中进行的研究较少。我们这项研究的目的是鉴定美国印第安人多代家族队列中调节 SU 的遗传位点,即“强壮心脏家族研究 (SHFS)”。我们使用 Illumina MetaboChip 芯片在 2000 名 SHFS 参与者中对 162718 个单核苷酸多态性 (SNP) 进行了基因分型。使用 SOLAR 中考虑亲缘关系的测量基因型分析方法和 METAL 中的荟萃分析,对 SU 进行全基因组关联分析。我们的研究结果显示,SU 与溶质载体家族 2,成员 9 (SLC2A9) 的 rs4481233、rs9998811、rs7696092 和 rs13145758(次要等位基因频率 (MAF)=25-44%;P<3×10)和 ATP 结合盒蛋白,亚家族 G,成员 2 (ABCG2) 的 rs41481455、rs2231142 和 rs1481012(MAF=29%;P<3×10)之间存在很强的关联。与 rs9998811、rs4148155 和 rs1481012 的 G 等位基因和 rs4481233、rs7696092 和 rs13145758 的 A 等位基因以及 rs2231142 的携带者相比,SU 浓度较低。在对显著的 SLC2A9 和 ABCG2 SNP 进行 SU 遗传分析后,发现了新的位点,核结合蛋白 1 (NUCB1) 和神经元 PAS 域蛋白 4 (NPAS4)(p<6×10)。为了鉴定美国印第安人特有的 SNP,我们对 SLC2A9 的关键区域进行了靶向测序。共鉴定出 233 个 SNP,其中 89 个与 SU 强烈相关(p<7.1×10),117 个是美国印第安人特有的。对墨西哥裔混血儿、欧洲人、印度人和东亚人后裔的关键 SNP 进行分析显示,常见 SNP 存在复制,包括我们的主导 SNP。我们的研究结果表明,在美国印第安人少数人群中,SU 与尿酸转运蛋白有关,与神经元相关基因的潜在新关联值得进一步研究。
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