期刊
NATURE REVIEWS CANCER
卷 15, 期 3, 页码 137-151出版社
NATURE PORTFOLIO
DOI: 10.1038/nrc3892
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资金
- Wellcome Trust Investigator Award [103844]
- Lister Institute of Preventative Medicine Fellowship
The mammalian genome is constantly challenged by exogenous and endogenous threats. Although much is known about the mechanisms that maintain DNA and RNA integrity, we know surprisingly little about the mechanisms that underpin the pathology and tissue specificity of many disorders caused by defective responses to DNA or RNA damage. Of the different types of endogenous damage, protein-linked DNA breaks (PDBs) are emerging as an important player in cancer development and therapy. PDBs can arise during the abortive activity of DNA topoisomerases, a class of enzymes that modulate DNA topology during several chromosomal transactions, such as gene transcription and DNA replication, recombination and repair. In this Review, we discuss the mechanisms underpinning topoisomerase-induced PDB formation and repair with a focus on their role during gene transcription and the development of tissue-specific cancers.
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