TadA orthologs enable both cytosine and adenine editing of base editors.


Journal

Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555

Informations de publication

Date de publication:
26 01 2023
Historique:
received: 19 08 2022
accepted: 09 01 2023
entrez: 26 1 2023
pubmed: 27 1 2023
medline: 31 1 2023
Statut: epublish

Résumé

Cytidine and adenosine deaminases are required for cytosine and adenine editing of base editors respectively, and no single deaminase could enable concurrent and comparable cytosine and adenine editing. Additionally, distinct properties of cytidine and adenosine deaminases lead to various types of off-target effects, including Cas9-indendepent DNA off-target effects for cytosine base editors (CBEs) and RNA off-target effects particularly severe for adenine base editors (ABEs). Here we demonstrate that 25 TadA orthologs could be engineered to generate functional ABEs, CBEs or ACBEs via single or double mutations, which display minimized Cas9-independent DNA off-target effects and genotoxicity, with orthologs B5ZCW4, Q57LE3, E8WVH3, Q13XZ4 and B3PCY2 as promising candidates for further engineering. Furthermore, RNA off-target effects of TadA ortholog-derived base editors could be further reduced or even eliminated by additional single mutation. Taken together, our work expands the base editing toolkits, and also provides important clues for the potential evolutionary process of deaminases.

Identifiants

pubmed: 36702837
doi: 10.1038/s41467-023-36003-3
pii: 10.1038/s41467-023-36003-3
pmc: PMC9880001
doi:

Substances chimiques

Cytosine 8J337D1HZY
Adenine JAC85A2161
DNA 9007-49-2
RNA 63231-63-0
Adenosine K72T3FS567

Types de publication

Journal Article Research Support, Non-U.S. Gov't

Langues

eng

Sous-ensembles de citation

IM

Pagination

414

Informations de copyright

© 2023. The Author(s).

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Auteurs

Shuqian Zhang (S)

Institute for Translational Brain Research, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institute of Pediatrics, National Children's Medical Center, Children's Hospital, Fudan University, Shanghai, China.
Department of Pediatrics, Qilu Hospital of Shandong University, Ji'nan, 250012, China.

Bo Yuan (B)

Institute of Neuroscience, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China.

Jixin Cao (J)

Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China.

Liting Song (L)

Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China.

Jinlong Chen (J)

Institute for Translational Brain Research, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institute of Pediatrics, National Children's Medical Center, Children's Hospital, Fudan University, Shanghai, China.

Jiayi Qiu (J)

Institute for Translational Brain Research, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institute of Pediatrics, National Children's Medical Center, Children's Hospital, Fudan University, Shanghai, China.

Zilong Qiu (Z)

Institute of Neuroscience, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China.
National Clinical Research Center for Aging and Medicine, Huashan Hopsital, Fudan University, Shanghai, 200032, China.
Songjiang Hospital, Songjiang Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China.

Xing-Ming Zhao (XM)

Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China.
State Key Laboratory of Medical Neurobiology, Institutes of Brain Science, Fudan University, Shanghai, China.
MOE Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence, and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China.

Jingqi Chen (J)

Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China.
State Key Laboratory of Medical Neurobiology, Institutes of Brain Science, Fudan University, Shanghai, China.
MOE Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence, and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China.

Tian-Lin Cheng (TL)

Institute for Translational Brain Research, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institute of Pediatrics, National Children's Medical Center, Children's Hospital, Fudan University, Shanghai, China. chengtianlin@fudan.edu.cn.

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Classifications MeSH