Reducing the inherent auto-inhibitory interaction within the pegRNA enhances prime editing efficiency.
Reducing the inherent auto-inhibitory interaction within the pegRNA enhances prime editing efficiency.
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DOI:
10.1093/nar/gkad456
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发表时间:
2023-07-21
影响因子:
14.9
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中科院分区:
文献类型:
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Prime editing systems have enabled the incorporation of precise edits within a genome without introducing double strand breaks. Previous studies defined an optimal primer binding site (PBS) length for the pegRNA of ∼13 nucleotides depending on the sequence composition. However, optimal PBS length characterization has been based on prime editing outcomes using plasmid or lentiviral expression systems. In this study, we demonstrate that for prime editor (PE) ribonucleoprotein complexes, the auto-inhibitory interaction between the PBS and the spacer sequence affects pegRNA binding efficiency and target recognition. Destabilizing this auto-inhibitory interaction by reducing the complementarity between the PBS-spacer region enhances prime editing efficiency in multiple prime editing formats. In the case of end-protected pegRNAs, a shorter PBS length with a PBS-target strand melting temperature near 37°C is optimal in mammalian cells. Additionally, a transient cold shock treatment of the cells post PE-pegRNA delivery further increases prime editing outcomes for pegRNAs with optimized PBS lengths. Finally, we show that prime editor ribonucleoprotein complexes programmed with pegRNAs designed using these refined parameters efficiently correct disease-related genetic mutations in patient-derived fibroblasts and efficiently install precise edits in primary human T cells and zebrafish.
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影响因子:
12.3
作者:
Park SJ;Jeong TY;Shin SK;Yoon DE;Lim SY;Kim SP;Choi J;Lee H;Hong JI;Ahn J;Seong JK;Kim K
通讯作者:
Kim K
影响因子:
16.6
作者:
Li X;Zhou L;Gao BQ;Li G;Wang X;Wang Y;Wei J;Han W;Wang Z;Li J;Gao R;Zhu J;Xu W;Wu J;Yang B;Sun X;Yang L;Chen J
通讯作者:
Chen J
影响因子:
48
作者:
Liang, Shun-Qing;Liu, Pengpeng;Wolfe, Scot A.
通讯作者:
Wolfe, Scot A.
影响因子:
14.9
作者:
Adikusuma F;Lushington C;Arudkumar J;Godahewa GI;Chey YCJ;Gierus L;Piltz S;Geiger A;Jain Y;Reti D;Wilson LOW;Bauer DC;Thomas PQ
通讯作者:
Thomas PQ
影响因子:
16.6
作者:
Liu P;Liang SQ;Zheng C;Mintzer E;Zhao YG;Ponnienselvan K;Mir A;Sontheimer EJ;Gao G;Flotte TR;Wolfe SA;Xue W
通讯作者:
Xue W