An efficient gene knock-in strategy using 5'-modified double-stranded DNA donors with short homology arms.

Yi Yu, Yijun Guo, Qiqi Tian, Yuanqing Lan, Hugh Yeh, Meng Zhang, Ipek Tasan, Surbhi Jain, Huimin Zhao

Nature chemical biology 2020 Apr

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Here, we report a rapid CRISPR-Cas9-mediated gene knock-in strategy that uses Cas9 ribonucleoprotein and 5'-modified double-stranded DNA donors with 50-base-pair homology arms and achieved unprecedented 65/40% knock-in rates for 0.7/2.5 kilobase inserts, respectively, in human embryonic kidney 293T cells. The identified 5'-end modification led to up to a fivefold increase in gene knock-in rates at various genomic loci in human cancer and stem cells.

Citation

Yi Yu, Yijun Guo, Qiqi Tian, Yuanqing Lan, Hugh Yeh, Meng Zhang, Ipek Tasan, Surbhi Jain, Huimin Zhao. An efficient gene knock-in strategy using 5'-modified double-stranded DNA donors with short homology arms. Nature chemical biology. 2020 Apr;16(4):387-390