Evidence for APOBEC3B mutagenesis in multiple human cancers.
Evidence for APOBEC3B mutagenesis in multiple human cancers.
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DOI:
10.1038/ng.2701
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发表时间:
2013-09
期刊:
影响因子:
30.8
通讯作者:
Harris, Reuben S.
中科院分区:
文献类型:
--
作者:
Burns, Michael B.;Temiz, Nuri A.;Harris, Reuben S.
Thousands of somatic mutations accrue in most human cancers and causes are largely unknown. We recently showed that the DNA cytosine deaminase APOBEC3B accounts for up to half of the mutational load in breast carcinomas expressing this enzyme. Here, we address whether APOBEC3B is broadly responsible for mutagenesis in multiple tumor types. We analyzed gene expression data and mutation patterns, distributions, and loads for 19 different cancer types, totaling over 4,800 exomes and 1,000,000 somatic mutations. Remarkably, APOBEC3B is upregulated and its preferred target sequence is frequently mutated and clustered in at least 6 distinct cancers: bladder, cervix, lung (adeno- and squamous cell), head/neck, and breast. Interpreted in light of prior genetic, cellular, and biochemical studies, the most parsimonious conclusion based on these global analyses is that APOBEC3B catalyzed genomic uracil lesions are responsible for a large proportion of both dispersed and clustered mutations in multiple distinct cancers.
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