The genome-wide effects of ionizing radiation on mutation induction in the mammalian germline.

The genome-wide effects of ionizing radiation on mutation induction in the mammalian germline.
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DOI:
10.1038/ncomms7684
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发表时间:
2015-03-26
影响因子:
16.6
通讯作者:
Hurles, Matthew E.
Hurles, Matthew E.
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Adewoye, Adeolu B.;Lindsay, Sarah J.;Dubrova, Yuri E.;Hurles, Matthew E.

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The ability to predict the genetic consequences of human exposure to ionizing radiation has been a long-standing goal of human genetics in the past 50 years. Here we present the results of an unbiased, comprehensive genome-wide survey of the range of germline mutations induced in laboratory mice after parental exposure to ionizing radiation and show irradiation markedly alters the frequency and spectrum of de novo mutations. Here we show that the frequency of de novo copy number variants (CNVs) and insertion/deletion events (indels) is significantly elevated in offspring of exposed fathers. We also show that the spectrum of induced de novo single-nucleotide variants (SNVs) is strikingly different; with clustered mutations being significantly over-represented in the offspring of irradiated males. Our study highlights the specific classes of radiation-induced DNA lesions that evade repair and result in germline mutation and paves the way for similarly comprehensive characterizations of other germline mutagens. Ionizing radiation (IR) is an extensively studied mutagenic agent that can lead to the accumulation of extra mutations in the offspring of irradiated parents. Here the authors provide a comprehensive genome-wide survey of the consequences of IR on the mammalian germline.
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