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CRISPR-Cas9-Mediated Precise Knock-In Edits in Zebrafish Hearts
Published on: September 13, 2022
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Exogenous gene integration mediated by genome editing technologies in zebrafish
Hitoshi Morita1, Kiyohito Taimatsu1, Kanoko Yanagi1
1a Laboratory for Developmental Biology, Center for Medical Education and Sciences, Graduate School of Medical Science , University of Yamanashi , Chuo , Yamanashi , Japan.
Bioengineered
|March 9, 2017
Summary
Advanced genome editing tools like TALEN and CRISPR/Cas enable precise gene insertion into model organisms. These improved knock-in technologies offer greater flexibility for genomic modification and research applications.
Area of Science:
- Molecular Biology
- Genetics
- Biotechnology
Background:
- Genome editing technologies, including TALEN and CRISPR/Cas systems, induce targeted DNA double-strand breaks (DSBs).
- DSBs trigger cellular repair mechanisms, which can be exploited for genetic modifications.
- Recent advancements focus on integrating exogenous genes into specific genomic loci.
Purpose of the Study:
- To review and highlight novel knock-in technologies for model organisms.
- To discuss the application of various DNA double-strand break repair pathways in gene integration.
- To emphasize the potential of improved knock-in methods for versatile genome modification.
Main Methods:
- Utilizing transcription activator-like effector nuclease (TALEN) and CRISPR/Cas systems for targeted DSB induction.
- Employing homology-directed repair (HDR) for conventional knock-in.
- Developing novel knock-in strategies leveraging non-homologous end joining (NHEJ) and microhomology-mediated end joining (MMEJ) pathways.
Main Results:
- Technology-induced DSBs facilitate the integration of exogenous genes into targeted genomic loci.
- Novel knock-in technologies expand beyond HDR, incorporating NHEJ and MMEJ.
- Refined donor vectors enhance the efficiency and versatility of gene integration.
Conclusions:
- Improved knock-in technologies offer greater control and flexibility in modifying model organism genomes.
- These advancements are crucial for diverse research applications requiring precise genetic alterations.
- The development of novel gene integration strategies accelerates progress in functional genomics and synthetic biology.
