Genetic architecture of insulin resistance in the mouse.

Genetic architecture of insulin resistance in the mouse.
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DOI:
10.1016/j.cmet.2015.01.002
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发表时间:
2015-02-03
期刊:
影响因子:
29
通讯作者:
Lusis AJ
Lusis AJ
中科院分区:
生物学1区
文献类型:
--
作者:
Parks BW;Sallam T;Mehrabian M;Psychogios N;Hui ST;Norheim F;Castellani LW;Rau CD;Pan C;Phun J;Zhou Z;Yang WP;Neuhaus I;Gargalovic PS;Kirchgessner TG;Graham M;Lee R;Tontonoz P;Gerszten RE;Hevener AL;Lusis AJ

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胰岛素抵抗(IR)是一种复杂的性状,具有多种遗传和环境因素。由于性别、环境和疾病病理学之间的巨大差异,IR的遗传基础一直难以剖析。在这里,我们研究了IR和相关性状的不同人口的100多个独特的雄性和雌性近交系小鼠品系喂养后,饮食富含脂肪和精制碳水化合物。我们的研究结果表明,在IR之间的小鼠品系和广泛的性别差异,这是依赖于基因型的显着变化。我们发现了超过15个全基因组显著位点,并验证了一个与IR相关的基因Agpat5。我们还整合了血浆代谢物水平和肝脏和脂肪组织的全局基因表达,以分别确定代谢物数量性状位点(mQTL)和表达QTL(eQTL)。我们的研究结果提供了一个资源,分析饮食,性别和遗传背景之间的相互作用在IR。
Insulin Resistance (IR) is a complex trait with multiple genetic and environmental components. Confounded by large differences between the sexes, environment and disease pathology, the genetic basis of IR has been difficult to dissect. Here we examine IR and related traits in a diverse population of more than 100 unique male and female inbred mouse strains after feeding a diet rich in fat and refined carbohydrates. Our results show dramatic variation in IR among strains of mice and widespread differences between sexes that is dependent on genotype. We uncover more than 15 genome-wide significant loci and validate a gene, Agpat5, associated with IR. We also integrate plasma metabolite levels and global gene expression from liver and adipose tissue to identify metabolite Quantitative Trait Loci (mQTL) and expression QTL (eQTL), respectively. Our results provide a resource for analysis of interactions between diet, sex and genetic background in IR.
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