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Updated: Feb 10, 2026
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Genome Engineering of Primary Human B Cells Using CRISPR/Cas9
Published on: November 3, 2020
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CRISPR/Cas9-based genome engineering of zebrafish using a seamless integration strategy
Juan-Juan Luo1,2, Wan-Ping Bian2, Yi Liu2,3
1Center for Neuroscience, Shantou University Medical College, Shantou, China.
Summary
This study introduces a new CRISPR/Cas9 method for seamless gene integration in zebrafish, preserving endogenous gene function. This efficient technique drives expression from endogenous promoters, advancing gene therapy and developmental studies.
Area of Science:
- Zebrafish genetics
- Genome editing
- Molecular biology
Background:
- Existing methods for inserting DNA into zebrafish genomes often disrupt endogenous genes and fail to replicate natural expression patterns.
- Programmable nucleases like CRISPR/Cas9 offer genome editing capabilities but face challenges in seamless gene integration.
Purpose of the Study:
- To develop a novel, highly efficient method for seamless DNA integration in zebrafish using endogenous promoters.
- To maintain the integrity and function of targeted endogenous genes during transgenesis.
Main Methods:
- Utilized clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated (Cas) 9 technology.
- Employed microhomology-mediated end-joining (MMEJ) for donor vector integration.
- Integrated mCherry reporter into the final coding sequence of targeted genes.
Main Results:
- Successfully generated seamless transgenic zebrafish lines with high efficiency.
- Demonstrated that the novel technique preserves the integrity and function of targeted endogenous genes.
- Achieved endogenous promoter-driven expression of the integrated sequence.
Conclusions:
- The developed MMEJ-dependent transgenesis strategy offers a significant advancement over existing methods.
- This technique has potential applications in gene therapy and translational medicine.
- It provides a valuable new tool for zebrafish research, particularly in developmental biology and reporter gene studies.
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