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The molecular basis and disease relevance of non-homologous DNA end joining

Open access
Zhao, Bailin, Rothenberg, Eli, Ramsden, Dale A., Lieber, Michael R.·2020·Nature Reviews Molecular Cell Biology

Abstract

Non-homologous DNA end joining (NHEJ) is the predominant repair mechanism of any type of DNA double-strand break (DSB) during most of the cell cycle and is essential for the development of antigen receptors. Defects in NHEJ result in sensitivity to ionizing radiation and loss of lymphocytes. The most critical step of NHEJ is synapsis, or the juxtaposition of the two DNA ends of a DSB, because all subsequent steps rely on it. Recent findings show that, like the end processing step, synapsis can be achieved through several mechanisms. In this Review, we first discuss repair pathway choice between NHEJ and other DSB repair pathways. We then integrate recent insights into the mechanisms of NHEJ synapsis with updates on other steps of NHEJ, such as DNA end processing and ligation. Finally, we discuss NHEJ-related human diseases, including inherited disorders and neoplasia, which arise from rare failures at different NHEJ steps. Non-homologous DNA end joining (NHEJ) is the main repair pathway of DNA double-strand breaks. Recent studies show that synapsis — the crucial pairing of DNA ends — is performed by several mechanisms, and this insight can now be integrated with updates on the DNA end processing and ligation steps of NHEJ, and with NHEJ-related human diseases.

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Metadata

Authors
Zhao, B., Rothenberg, E., Ramsden, D. A., & Lieber, M. R.
Venue
Nature Reviews Molecular Cell Biology
Published
2020-10-19
Volume
21
Issue
12
Pages
765-781
ISSN
  • 1471-0072 (ISSN-L)
  • 1471-0080
OpenAlex
W3092794318
Cited by
384
References
231
FWCI
4.01
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: The molecular basis and disease relevance of non-homologous DNA end joining. https://app.cochat.ai/papers/10.1038/s41580-020-00297-8
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Zhao, B., Rothenberg, E., Ramsden, D. A., & Lieber, M. R. (2020). The molecular basis and disease relevance of non-homologous DNA end joining. Nature Reviews Molecular Cell Biology. https://doi.org/10.1038/s41580-020-00297-8

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