Mutations in RECQL Gene Are Associated with Predisposition to Breast Cancer.

Mutations in RECQL Gene Are Associated with Predisposition to Breast Cancer.
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RECQL 基因突变与乳腺癌易感性相关

DOI:
10.1371/journal.pgen.1005228
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发表时间:
2015-05
期刊:
影响因子:
4.5
通讯作者:
Xie Y
Xie Y
中科院分区:
生物学2区
文献类型:
--
作者:
Sun J;Wang Y;Xia Y;Xu Y;Ouyang T;Li J;Wang T;Fan Z;Fan T;Lin B;Lou H;Xie Y

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大约 80% 的家族性乳腺癌患者的遗传原因尚不清楚。在这里,通过对 9 名没有 BRCA1/2 突变的早发家族性乳腺癌患者(在 35 岁或之前诊断出乳腺癌)的整个外显子组进行测序,我们发现两个指示病例的 RECQL 基因(RecQ 解旋酶样;chr12p12)携带潜在有害的突变。最近的研究表明,RECQL参与DNA双链断裂修复,在维持基因组稳定性方面发挥着重要作用。因此,我们进一步在另外439名无关的家族性乳腺癌患者中筛查了RECQL基因。总的来说,我们发现了三个导致 RECQL 蛋白截短的无义突变(p.L128X、p.W172X 和 p.Q266X)、一个影响 mRNA 剪接的突变(c.395-2A>G)和五个破坏 RECQL 解旋酶活性的错义突变(p.A195S、p.R215Q、p.R455C、 p.M458K 和 p.T562I),通过体外解旋酶测定进行评估。总的来说,448 名 BRCA 阴性家族性乳腺癌患者中有 9 名携带 RECQL 基因致病突变,与 1,588 名对照者中的一名相比 (P = 9.14×10-6)。我们的研究结果表明,RECQL 是一种潜在的乳腺癌易感基因,该基因的突变会导致家族性乳腺癌的发生。
The genetic cause for approximately 80% of familial breast cancer patients is unknown. Here, by sequencing the entire exomes of nine early-onset familial breast cancer patients without BRCA1/2 mutations (diagnosed with breast cancer at or before the age of 35) we found that two index cases carried a potentially deleterious mutation in the RECQL gene (RecQ helicase-like; chr12p12). Recent studies suggested that RECQL is involved in DNA double-strand break repair and it plays an important role in the maintenance of genomic stability. Therefore, we further screened the RECQL gene in an additional 439 unrelated familial breast cancer patients. In total, we found three nonsense mutations leading to a truncated protein of RECQL (p.L128X, p.W172X, and p.Q266X), one mutation affecting mRNA splicing (c.395-2A>G), and five missense mutations disrupting the helicase activity of RECQL (p.A195S, p.R215Q, p.R455C, p.M458K, and p.T562I), as evaluated through an in vitro helicase assay. Taken together, 9 out of 448 BRCA-negative familial breast cancer patients carried a pathogenic mutation of the RECQL gene compared with one of the 1,588 controls (P = 9.14×10-6). Our findings suggest that RECQL is a potential breast cancer susceptibility gene and that mutations in this gene contribute to familial breast cancer development.
DOI: 10.1007/s13277-014-2528-2
发表时间: 2014-12-01
期刊: TUMOR BIOLOGY
影响因子: --
作者:
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发表时间: 2005-07-29
影响因子: 4.8
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发表时间: 2007-03-01
影响因子: 5.3
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发表时间: 2009-01-27
影响因子: 11.1
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发表时间: 2011-03-01
影响因子: 14.9
作者:
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