期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 140, 期 31, 页码 9783-9787出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.8b03715
关键词
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资金
- Swiss National Science Foundation [156280]
- China Scholarships Council
Single-nucleotide-resolution sequencing of DNA damage is required to decipher the complex causal link between the identity and location of DNA adducts and their biological impact. However, the low abundance and inability to specifically amplify DNA damage hinders single-nucleotide mapping of adducts within whole genomes. Despite the high biological relevance of guanine oxidation and seminal recent advances in sequencing bulky adducts, single-nucleotide-resolution whole genome mapping of oxidative damage is not yet realized. We coupled the specificity of repair enzymes with the efficiency of a click DNA ligation reaction to insert a biocompatible locator code, enabling high-throughput, nucleotide-resolution sequencing of oxidative DNA damage in a genome. We uncovered thousands of oxidation sites with distinct patterns related to transcription, chromatin architecture, and chemical oxidation potential. Click-code-seq overcomes barriers to DNA damage sequencing and provides a new approach for generating comprehensive, sequence-specific information about chemical modification patterns in whole genomes.
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