title: The genome-wide effects of ionizing radiation on mutation induction in the mammalian germline.
abstract: 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.
authors: Department of Genetics, University of Leicester, Leicester LE1 7RH, UK.
authors: Adeolu B
authors: AB
authors: Adewoye
authors: Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SA, UK.
authors: Sarah J
authors: SJ
authors: Lindsay
authors: Department of Genetics, University of Leicester, Leicester LE1 7RH, UK.
authors: Yuri E
authors: YE
authors: Dubrova
authors: Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SA, UK.
authors: Matthew E
authors: ME
authors: Hurles
mesh_terms: D000818:Animals; D004247:DNA / Q000528:radiation effects*; D056915:DNA Copy Number Variations / Q000528:radiation effects*; D005260:Female; D016678:Genome / Q000235:genetics / Q000528:radiation effects*; D005854:Germ Cells / Q000528:radiation effects*; D018095:Germ-Line Mutation / Q000235:genetics / Q000528:radiation effects*; D008297:Male; D051379:Mice; D020411:Oligonucleotide Array Sequence Analysis; D011839:Radiation, Ionizing; D017422:Sequence Analysis, DNA; D013091:Spermatogenesis
chemical_list: D004247:DNA