A polymorphic p53 response element in KIT ligand influences cancer risk and has undergone natural selection.

A polymorphic p53 response element in KIT ligand influences cancer risk and has undergone natural selection.
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DOI:
10.1016/j.cell.2013.09.017
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发表时间:
2013-10-10
期刊:
影响因子:
64.5
通讯作者:
Bond GL
Bond GL
中科院分区:
生物学1区
文献类型:
--
作者:
Zeron-Medina J;Wang X;Repapi E;Campbell MR;Su D;Castro-Giner F;Davies B;Peterse EF;Sacilotto N;Walker GJ;Terzian T;Tomlinson IP;Box NF;Meinshausen N;De Val S;Bell DA;Bond GL

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p53调节转录的能力对于肿瘤抑制至关重要,这意味着功能性p53结合位点的遗传多态性可能影响癌症。在这里,我们确定了一个多态性p53反应元件,并证明其对癌症风险的影响,使用全基因组数据集的癌症易感基因座,遗传变异,p53占有率,和p53结合位点。我们发现了一个功能性p53结合位点的单核苷酸多态性(SNP),并确定其对p53结合和调节KITLG基因转录能力的影响。SNP位于KITLG中,与癌症全基因组关联研究中确定的最大风险之一相关。我们确定SNP在整个进化过程中经历了正选择,这意味着选择性的好处,但继续表明,由于负选择,类似的SNP在基因组中很少见,这表明p53结合位点的多态性主要对人类有害。
The ability of p53 to regulate transcription is crucial for tumor suppression and implies that inherited polymorphisms in functional p53-binding sites could influence cancer. Here, we identify a polymorphic p53 responsive element and demonstrate its influence on cancer risk using genome-wide data sets of cancer susceptibility loci, genetic variation, p53 occupancy, and p53-binding sites. We uncover a single-nucleotide polymorphism (SNP) in a functional p53-binding site and establish its influence on the ability of p53 to bind to and regulate transcription of the KITLG gene. The SNP resides in KITLG and associates with one of the largest risks identified among cancer genome-wide association studies. We establish that the SNP has undergone positive selection throughout evolution, signifying a selective benefit, but go on to show that similar SNPs are rare in the genome due to negative selection, indicating that polymorphisms in p53-binding sites are primarily detrimental to humans.
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