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Updated: Sep 24, 2025
09:51
Enhanced Genome Editing with Cas9 Ribonucleoprotein in Diverse Cells and Organisms
Published on: May 25, 2018
34.4K
Highly specific chimeric DNA-RNA-guided genome editing with enhanced CRISPR-Cas12a system
Hanseop Kim1,2, Wi-Jae Lee1,3, Chan Hyoung Kim1,4
1Futuristic Animal Resource & Research Center (FARRC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju 28116, Republic of Korea.
Molecular Therapy. Nucleic Acids
|May 4, 2022
Summary
Researchers enhanced the CRISPR-Cas12a gene editing system using a novel chimeric guide, significantly improving both efficiency and specificity for precise genome editing applications.
Area of Science:
- Molecular Biology
- Genetics
- Biotechnology
Background:
- The Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)-Cas12a system is a powerful tool for targeted gene editing.
- Cas12a, a DNA-cleaving endonuclease, guided by CRISPR RNA (crRNA), enables specific DNA modifications in living systems.
Purpose of the Study:
- To enhance the efficiency and specificity of the CRISPR-Cas12a gene editing system.
- To optimize the system at a molecular level for improved accuracy.
Main Methods:
- Protein and crRNA engineering were employed to improve the CRISPR-Cas12a system.
- A chimeric DNA-RNA guide, chemically similar to crRNA, was utilized to maximize target sequence specificity.
Main Results:
- The enhanced Cas12a system (en-Cas12a) demonstrated improved efficiency and target specificity compared to the wild-type (wt)-Cas12a system.
- Efficiency and target specificity were enhanced by an average of 2.58 and 2.77 times, respectively, using the en-Cas12a system.
- Simultaneous increases in gene-editing efficiency and accuracy were observed with the chimeric DNA-RNA-guided en-Cas12a effector.
Conclusions:
- The engineered CRISPR-Cas12a system, utilizing a chimeric DNA-RNA guide, offers superior gene-editing efficiency and accuracy.
- These advancements hold significant potential for future applications in highly accurate genome editing, including human gene therapy.
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