ArticleBMC biology2021
Harnessing A3G for efficient and selective C-to-T conversion at C-rich sequences.
Article in BMC biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
7 citing papers in PubMed, 8 citations in OpenAlex.
- The APOBEC3 family: a narrative review of an alternative therapeutic agent for hepatitis B virus-induced hepatocellular carcinoma.Journal of gastrointestinal oncology · 2026Review
- Precise Correction of theResearch (Washington, D.C.) · 2025Article
- Gene editing therapy for cardiovascular diseases.MedComm · 2024Review
- Liver-specific in vivo base editing of Angptl3 via AAV delivery efficiently lowers blood lipid levels in mice.Cell & bioscience · 2023Article
- Advances in CRISPR/Cas gene therapy for inborn errors of immunity.Frontiers in immunology · 2023Review
- Inhibition of base editors with anti-deaminases derived from viruses.Nature communications · 2022Article
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Authors and funding
9 authors at 3 institutions in 1 country.
Funding
Abstract
backgroundSite-specific C>T DNA base editing has been achieved by recruiting cytidine deaminases to the target C using catalytically impaired Cas proteins; the target C is typically located within 5-nt editing window specified by the guide RNAs. The prototypical cytidine base editor BE3, comprising rat APOBEC1 (rA1) fused to nCas9, can indiscriminately deaminate multiple C's within the editing window and also create substantial off-target edits on the transcriptome. A powerful countermeasure for the DNA off-target editing is to replace rA1 with APOBEC proteins which selectively edit C's in the context of specific motifs, as illustrated in eA3A-BE3 which targets TC. However, analogous editors selective for other motifs have not been described. In particular, it has been challenging to target a particular C in C-rich sequences. Here, we sought to confront this challenge and also to overcome the RNA off-target effects seen in BE3.
resultsBy replacing rA1 with an optimized human A3G (oA3G), we developed oA3G-BE3, which selectively targets CC and CCC and is also free of global off-target effects on the transcriptome. Furthermore, we created oA3G-BE4max, an upgraded version of oA3G-BE3 with robust on-target editing. Finally, we showed that oA3G-BE4max has negligible Cas9-independent off-target effects at the genome.
conclusionsoA3G-BE4max can edit C(C)C with high efficiency and selectivity, which complements eA3A-editors to broaden the collective editing scope of motif selective editors, thus filling a void in the base editing tool box.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.