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DNA Repair Pathways and Mechanisms

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Book cover DNA Repair of Cancer Stem Cells

Abstract

Our cells are constantly exposed to insults from endogenous and exogenous agents that can introduce damage into our DNA and generate genomic instability. Many of these lesions cause structural damage to DNA and can alter or eliminate fundamental cellular processes, such as DNA replication or transcription. DNA lesions commonly include base and sugar modifications, single- and double-strand breaks, DNA-protein cross-links, and base-free sites. To counteract the harmful effects of DNA damage, cells have developed a specialized DNA repair system, which can be subdivided into several distinct mechanisms based on the type of DNA lesion. These processes include base excision repair, mismatch repair, nucleotide excision repair, and double-strand break repair, which comprise both homologous recombination and non-homologous end-joining. Although a complex set of cellular responses are elicited following DNA damage, this chapter provides an introduction to the specific molecular mechanisms of recognition, removal, and repair of DNA damage.

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Authors and Affiliations

  1. NIH Chemical Genomics Center, National Center for Advancing Translational Sciences, NIH, 9800 Medical Center Drive, MSC 3370, 20892–3370, Bethesda, MD, USA

    Thomas S. Dexheimer

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  1. Thomas S. Dexheimer
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Correspondence to Thomas S. Dexheimer .

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Editors and Affiliations

  1. Division of Pre-Clinical Innovation, Nat. Center for Advancing Transl. Scie, National Institutes of Health, BLDG B, RM 1004 9800, Rockville, 20850, Maryland, USA

    Lesley A Mathews

  2. Gannon University, University Square 109, Erie, 16541, Pennsylvania, USA

    Stephanie M Cabarcas

  3. Preclinical Oncology Research, MedImmune Way 1, Gaithersburg, 20878, Maryland, USA

    Elaine M. Hurt

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Dexheimer, T. (2013). DNA Repair Pathways and Mechanisms. In: Mathews, L., Cabarcas, S., Hurt, E. (eds) DNA Repair of Cancer Stem Cells. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-4590-2_2

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