Enhancement of CRISPR-Cas9 induced precise gene editing by targeting histone H2A-K15 ubiquitination.
Enhancement of CRISPR-Cas9 induced precise gene editing by targeting histone H2A-K15 ubiquitination.
复制标题
增强CRISPR-Cas9通过靶向组蛋白H2 A-K15泛素化诱导精确的基因编辑。
DOI:
10.1186/s12896-020-00650-x
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发表时间:
2020-10-23
影响因子:
3.5
通讯作者:
Kühn R
中科院分区:
文献类型:
--
作者:
Bashir S;Dang T;Rossius J;Wolf J;Kühn R
Precise genetic modifications are preferred products of CRISPR-Cas9 mediated gene editing in mammalian cells but require the repair of induced double-strand breaks (DSB) through homology directed repair (HDR). Since HDR competes with the prevailing non-homologous end joining (NHEJ) pathway and depends on the presence of repair templates its efficiency is often limited and demands optimized methodology. For the enhancement of HDR we redirect the DSB repair pathway choice by targeting the Ubiquitin mark for damaged chromatin at Histone H2A-K15. We used fusions of the Ubiquitin binding domain (UBD) of Rad18 or RNF169 with BRCA1 to promote HDR initiation and UBD fusions with DNA binding domains to attract donor templates and facilitate HDR processing. Using a traffic light reporter system in human HEK293 cells we found that the coexpression of both types of UBD fusion proteins promotes HDR, reduces NHEJ and shifts the HDR/NHEJ balance up to 6-fold. The HDR enhancing effect of UBD fusion proteins was confirmed at multiple endogenous loci. Our findings provide a novel efficient approach to promote precise gene editing in human cells. Supplementary information accompanies this paper at 10.1186/s12896-020-00650-x.
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影响因子:
14.9
作者:
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通讯作者:
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DOI:
10.1083/jcb.201109100
发表时间:
2012-04-16
期刊:
The Journal of cell biology
影响因子:
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