Electroporation of CRISPR-Cas9 into Malignant B Cells for Loss-of-Function Studies of Target Gene Via Knockout
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Updated: Jan 20, 2026

Electroporation-Based CRISPR-Cas9-Mediated Gene Knockout in THP-1 Cells and Single-Cell Clone Isolation
Published on: February 28, 2025
Jian Yu1,2
1Institute of Nanotechnology for Single Cell Analysis (INSCA), Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, China. yulab@buaa.edu.cn.
Abstract:
CRISPR-Cas9 is a unique technology that enables geneticists and medical researchers to edit genomic DNA for studying biology, pathogenesis, and molecular basis of treatment in malignant B cells. Unfortunately, malignant B cells are extremely difficult to transfect by most traditional methods. In this chapter, we describe the use of the Nucleofector™ Technology-based electroporation system with optimized transfection conditions for generating a malignant B cell model, JEKO-1, with ROR1-gene knockout via CRISPR-Cas9 technology.
Insights
CRISPR-Cas9 gene editing is challenging in malignant B cells. This study optimized Nucleofector™ electroporation for successful ROR1 gene knockout in the JEKO-1 malignant B cell line, creating a valuable research model.
Area of Science:
- Molecular Biology
- Genetics
- Cancer Research
Background:
- Malignant B cells are difficult to transfect using conventional methods.
- CRISPR-Cas9 gene editing offers powerful tools for studying cancer biology and treatment.
- Developing efficient gene editing models for malignant B cells is crucial for research.
Purpose of the Study:
- To establish an efficient method for CRISPR-Cas9 delivery into malignant B cells.
- To generate a ROR1-gene knockout malignant B cell model (JEKO-1) for research.
- To optimize transfection conditions for CRISPR-Cas9 in difficult-to-transfect cell lines.
Main Methods:
- Utilized CRISPR-Cas9 technology for targeted gene editing.
- Employed Nucleofector™ Technology-based electroporation for cell transfection.
- Optimized transfection parameters specifically for the JEKO-1 malignant B cell line.
- Validated ROR1 gene knockout in the engineered JEKO-1 cells.
Main Results:
- Successfully achieved ROR1 gene knockout in JEKO-1 cells using CRISPR-Cas9.
- Demonstrated the efficacy of Nucleofector™ Technology for transfecting malignant B cells.
- Established a reliable method for generating genetically modified malignant B cell models.
- The optimized protocol provides a robust approach for CRISPR-Cas9 applications in challenging cell types.
Conclusions:
- Nucleofector™ Technology-based electroporation enables efficient CRISPR-Cas9 gene editing in malignant B cells.
- The generated JEKO-1 ROR1-knockout model serves as a valuable tool for studying B cell malignancies.
- This optimized transfection strategy facilitates the advancement of cancer research and therapeutic development.
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