PLoS One:基因的遗传变异可导致卵巢上皮癌的风险

2015-07-15 范伟 译 MedSci原创

背景:有缺陷的细胞转运过程会导致微量元素、铁、小分子和激素在细胞中异常的积累,进而可促进活性氧的形成,促使DNA损伤以及关键调控的癌症基因的异常表达。DNA损伤和不受控制的扩散是癌症的特征,包括卵巢上皮癌(EOC),我们假设在细胞转运基因过程中的遗传变异是导致卵巢上皮癌的风险。方法:共获得了14525例患有侵入性卵巢上皮癌受试者的DNA样本,对照组的23447例患者来自卵巢癌协会联盟(OCAC)4

背景:有缺陷的细胞转运过程会导致微量元素、铁、小分子和激素在细胞中异常的积累,进而可促进活性氧的形成,促使DNA损伤以及关键调控的癌症基因的异常表达。DNA损伤和不受控制的扩散是癌症的特征,包括卵巢上皮癌(EOC),我们假设在细胞转运基因过程中的遗传变异是导致卵巢上皮癌的风险。

方法:共获得了14525例患有侵入性卵巢上皮癌受试者的DNA样本,对照组的23447例患者来自卵巢癌协会联盟(OCAC)43个站点的数据。279个SNPs,代表着131个基因,使用Illumina Infinium iSelect BeadChip 作为协作性肿瘤性基因-环境研究(COGS)的部分。使用无条件的逻辑回归模型进行SNP分析,FDR q < 0.2用于多个比较。

结果:所有浸润性癌症相结合和浆液性亚型联合的最重要证据为铁载体基因HEPH的SNP rs17216603 (侵入性:危险比= 0.85,P = 0.00026;浆液性:OR= 0.81,P = 0.00020);这个SNP也与边缘/低恶性潜力的(LMP)肿瘤(P = 0.021)有关联。其它基因与卵巢上皮癌组织学亚型显著相关(p < 0.05),包括UGT1A(子宫内膜样的),SLC25A45(粘液性的),SLC39A11(低恶性潜力的)和SERPINA7(透明细胞癌的)。此外,在来自***基因组计划的六个基因中有1785个SNPs(HEPH,MGST1,SERPINA,SLC25A45,SLC39A11和UGT1A),在白种-欧洲人患者中其与侵入性的卵巢上皮癌有关联。SNP最重要的估测是在SLC39A11的 rs117729793(每个等位基因,OR= 2.55,95% CI = 1.5-4.35,p = 5.66 x10-4)。

结论:在大量的女性患者群组中,这些结果揭示了细胞转运基因时的遗传变异和卵巢上皮癌组织学亚型的风险有关联。

原始出处:

Chornokur G, Lin HY, Tyrer JP, Lawrenson K, et al. Common Genetic Variation In Cellular Transport Genes and Epithelial Ovarian Cancer (EOC) Risk.PLoS One. 2015 Jun 19;10(6):e0128106. doi: 10.1371/journal.pone.0128106.

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