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Vasilev R, Gunitseva N, Shebanova R, Korzhenkov A, Vlaskina A, Evteeva M, Polushkina I, Nikitchina N, Toshchakov S, Kamenski P, Patrushev M, Mazunin I. Targeted Modification of Mammalian DNA by a Novel Type V Cas12a Endonuclease from Ruminococcus bromii. Int J Mol Sci 2022; 23:ijms23169289. [PMID: 36012553 PMCID: PMC9409102 DOI: 10.3390/ijms23169289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/12/2022] [Accepted: 08/16/2022] [Indexed: 11/25/2022] Open
Abstract
Type V Cas12a nucleases are DNA editors working in a wide temperature range and using expanded protospacer-adjacent motifs (PAMs). Though they are widely used, there is still a demand for discovering new ones. Here, we demonstrate a novel ortholog from Ruminococcus bromii sp. entitled RbCas12a, which is able to efficiently cleave target DNA templates, using the particularly high accessibility of PAM 5′-YYN and a relatively wide temperature range from 20 °C to 42 °C. In comparison to Acidaminococcus sp. (AsCas12a) nuclease, RbCas12a is capable of processing DNA more efficiently, and can be active upon being charged by spacer-only RNA at lower concentrations in vitro. We show that the human-optimized RbCas12a nuclease is also active in mammalian cells, and can be applied for efficient deletion incorporation into the human genome. Given the advantageous properties of RbCas12a, this enzyme shows potential for clinical and biotechnological applications within the field of genome editing.
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Affiliation(s)
- Ruslan Vasilev
- Kurchatov Genomics Center, National Research Center “Kurchatov Institute”, 123098 Moscow, Russia
- Faculty of Biology, Lomonosov Moscow State University, 119991 Moscow, Russia
- Correspondence: (R.V.); (I.M.)
| | - Natalia Gunitseva
- Kurchatov Genomics Center, National Research Center “Kurchatov Institute”, 123098 Moscow, Russia
| | - Regina Shebanova
- Center of Life Sciences, Skolkovo Institute of Science and Technology, 143026 Moscow, Russia
| | - Aleksei Korzhenkov
- Kurchatov Genomics Center, National Research Center “Kurchatov Institute”, 123098 Moscow, Russia
| | - Anna Vlaskina
- Kurchatov Genomics Center, National Research Center “Kurchatov Institute”, 123098 Moscow, Russia
| | - Marta Evteeva
- Kurchatov Genomics Center, National Research Center “Kurchatov Institute”, 123098 Moscow, Russia
| | - Irina Polushkina
- Kurchatov Genomics Center, National Research Center “Kurchatov Institute”, 123098 Moscow, Russia
| | - Natalia Nikitchina
- Center of Life Sciences, Skolkovo Institute of Science and Technology, 143026 Moscow, Russia
- UMR7156–Molecular Genetics, Genomics, Microbiology, University of Strasbourg and Centre National de la Recherche Scientifique (CNRS), 67000 Strasbourg, France
| | - Stepan Toshchakov
- Kurchatov Genomics Center, National Research Center “Kurchatov Institute”, 123098 Moscow, Russia
| | - Piotr Kamenski
- Faculty of Biology, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Maxim Patrushev
- Kurchatov Genomics Center, National Research Center “Kurchatov Institute”, 123098 Moscow, Russia
| | - Ilya Mazunin
- Center of Life Sciences, Skolkovo Institute of Science and Technology, 143026 Moscow, Russia
- Medical Genomics LLC, 119192 Moscow, Russia
- Correspondence: (R.V.); (I.M.)
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Abramov M, Polushkina I, Lichinitser M. 3043 Evaluation of efficacy of new antiemetic regimen containing aprepitant + granisetron (without dexamethasone) vs standard antiemetic regimen in highly emetogenic chemotherapy. EJC Suppl 2009. [DOI: 10.1016/s1359-6349(09)70642-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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