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CRISPR-Cas9-Mediated Precise Knock-In Edits in Zebrafish Hearts
Published on: September 13, 2022
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Ways of improving precise knock-in by genome-editing technologies
Svetlana A Smirnikhina1, Arina A Anuchina2, Alexander V Lavrov2,3
1Laboratory of Mutagenesis, Federal State Budgetary Institution "Research Centre for Medical Genetics", Moskvorechie, 1, Moscow, 115522, Russia. smirnikhinas@gmail.com.
Human Genetics
|November 4, 2018
Summary
Genome editing offers new ways to treat genetic diseases by correcting mutations. This review explores methods to improve precise gene insertion, enhancing therapeutic effectiveness for hereditary conditions.
Area of Science:
- Molecular Biology
- Genetics
- Biotechnology
Background:
- Genome editing technologies have advanced significantly, offering potential therapeutic applications.
- Treating hereditary monogenic diseases involves either gene knockout or precise gene correction (knock-in).
- Current precise knock-in methods for gene therapy show limited effectiveness.
Purpose of the Study:
- To review modern data on DNA double-strand break repair mechanisms.
- To explore strategies for enhancing the precision and efficiency of homology-directed repair (HDR) mediated knock-in.
- To identify key factors and novel approaches for improving gene editing outcomes.
Main Methods:
- Review of current scientific literature on DNA repair pathways.
- Analysis of strategies to modulate non-homologous end joining (NHEJ) and stimulate HDR.
- Investigation of small molecules, cell-cycle synchronization, and donor DNA design for improved knock-in efficiency.
Main Results:
- The review details various DNA repair pathways following nuclease-induced double-strand breaks.
- Several approaches are discussed for enhancing precise knock-in, including inhibiting NHEJ and promoting HDR.
- Optimization strategies involve cell-cycle control, Cas9 activity modulation, and improved donor template design.
Conclusions:
- Improving precise knock-in efficiency is crucial for the therapeutic application of genome editing in monogenic diseases.
- Modulating DNA repair pathways and optimizing delivery systems are key to advancing gene editing therapies.
- Further research into enhancing HDR and understanding repair mechanisms will accelerate the clinical translation of genome editing.
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