Moving on from GWAS: functional studies on the G6PC2 gene implicated in the regulation of fasting blood glucose.

Moving on from GWAS: functional studies on the G6PC2 gene implicated in the regulation of fasting blood glucose.
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DOI:
10.1007/s11892-013-0422-8
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发表时间:
2013-12
影响因子:
4.2
通讯作者:
O'Brien, Richard M.
O'Brien, Richard M.
中科院分区:
医学2区
文献类型:
--
作者:
O'Brien, Richard M.

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全基因组关联研究(GWAS)表明,G6 PC 2中的单核苷酸多态性(SNP)是空腹血糖(FBG)水平变化的最重要的常见决定因素。研究这些SNP对G6 PC 2基因转录和剪接的功能影响的分子研究表明,它们通过直接调节G6 PC 2表达来影响FBG。这一结论得到了G6 pc 2敲除(KO)小鼠研究的支持,研究表明G6 pc 2是基础葡萄糖刺激的胰岛素分泌的负调节因子,通过水解葡萄糖-6-磷酸起作用,从而降低糖酵解通量并对抗葡萄糖激酶的作用。因此,抑制G6 PC 2活性可能是降低FBG和心血管相关死亡风险的新疗法。GWAS和G6 pc 2 KO小鼠研究还表明,G6 PC 2影响β细胞功能的其他方面。G6 PC 2赋予的进化益处仍不清楚,但不太可能与其调节FBG的能力有关。
Genome-wide association studies (GWAS) have shown that single nucleotide polymorphisms (SNPs) in G6PC2 are the most important common determinants of variations in fasting blood glucose (FBG) levels. Molecular studies examining the functional impact of these SNPs on G6PC2 gene transcription and splicing suggest that they affect FBG by directly modulating G6PC2 expression. This conclusion is supported by studies on G6pc2 knockout (KO) mice showing that G6pc2 represents a negative regulator of basal glucose-stimulated insulin secretion that acts by hydrolyzing glucose-6-phosphate, thereby reducing glycolytic flux and opposing the action of glucokinase. Suppression of G6PC2 activity might therefore represent a novel therapy to lower FBG and the risk of cardiovascular associated mortality. GWAS and G6pc2 KO mouse studies also suggest that G6PC2 affects other aspects of beta cell function. The evolutionary benefit conferred by G6PC2 remains unclear but it is unlikely to be related to its ability to modulate FBG.
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