Division of Medical Sciences, Laboratory of Applied Human Genetics, Humphrey Oei Institute of Cancer Research, National Cancer Centre, Singapore, Republic of Singapore.
Published: July 2019
AI Article Synopsis
Article Abstract
Iatrogenic adverse events in clinical trials of retroviral vector-mediated gene-corrected cells have prioritized the urgent need for more comprehensive and stringent assessment of potentially genotoxic off-target alterations and the biosafety of cells intended for therapeutic applications. Genome editing tools such as zinc finger nucleases (ZFNs), transcription activator-like effector nucleases (TALENs) and clustered regularly interspaced palindromic repeats (CRISPR)-Cas9 nuclease systems are being investigated as safer and efficient alternatives for site-directed genome modification. Using site-specific integration into the AAVS1 locus of primary human cells as an example, we present an integrated approach to multimodal investigation of off-target alterations and an evaluation of potential genotoxicity induced by ZFN-mediated integration of a therapeutic transgene.
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