Journal
NATURE COMMUNICATIONS
Volume 14, Issue 1, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41467-023-38193-2
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Limited research has been conducted on concurrent C-to-G and A-to-G base editing. The authors show that HMGN1 enhances the efficiency of base editing and develop a CRISPR-based dual-function A-to-G and C-to-G base editor (GGBE) by fusing HMGN1 to GBE and ABE.
Limited work has been done on concurrent C-to-G and A-to-G base editing. Here the authors test how a number of chromatin-associated factors affect base editing and show that HMGN1 enhanced the efficiency; by fusing HMGN1 to GBE and ABE they develop a CRISPR-based dual-function A-to-G and C-to-G base editor (GGBE). C-to-G base editors have been successfully constructed recently, but limited work has been done on concurrent C-to-G and A-to-G base editing. In addition, there is also limited data on how chromatin-associated factors affect the base editing. Here, we test a series of chromatin-associated factors, and chromosomal protein HMGN1 was found to enhance the efficiency of both C-to-G and A-to-G base editing. By fusing HMGN1, GBE and ABE to Cas9, we develop a CRISPR-based dual-function A-to-G and C-to-G base editor (GGBE) which is capable of converting simultaneous A and C to G conversion with substantial editing efficiency. Accordingly, the HMGN1 role shown in this work and the resulting GGBE tool further broaden the genome manipulation capacity of CRISPR-directed base editors.
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