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Modulation of DNA double-strand break repair as a strategy to improve precise genome editing

Ray, U and Raghavan, SC (2020) Modulation of DNA double-strand break repair as a strategy to improve precise genome editing. In: Oncogene .

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Official URL: https://dx.doi.org/10.1038/s41388-020-01445-2


In the present day, it is possible to incorporate targeted mutations or replace a gene using genome editing techniques such as customisable CRISPR/Cas9 system. Although induction of DNA double-strand breaks (DSBs) by genome editing tools can be repaired by both non-homologous end joining (NHEJ) and homologous recombination (HR), the skewness of the former pathway in human and other mammals normally result in imprecise repair. Scientists working at the crossroads of DNA repair and genome editing have devised new strategies for using a specific pathway to their advantage. Refinement in the efficiency of precise gene editing was witnessed upon downregulation of NHEJ by knockdown or using small molecule inhibitors on one hand, and upregulation of HR proteins and addition of HR stimulators, other hand. The exploitation of cell cycle phase differences together with appropriate donor DNA length/sequence and small molecules has provided further improvement in precise genome editing. The present article reviews the mechanisms of improving the efficiency of precise genome editing in several model organisms and in clinics. © 2020, The Author(s), under exclusive licence to Springer Nature Limited.

Item Type: Journal Article
Publication: Oncogene
Publisher: Springer Nature
Additional Information: The copyright of this article belongs to Springer Nature
Department/Centre: Division of Biological Sciences > Biochemistry
Date Deposited: 11 Nov 2020 10:36
Last Modified: 11 Nov 2020 10:36
URI: http://eprints.iisc.ac.in/id/eprint/66634

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