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Related Concept Videos

In-vitro Mutagenesis01:16

In-vitro Mutagenesis

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To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.
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Related Experiment Video

Updated: Nov 23, 2025

Selection-dependent and Independent Generation of CRISPR/Cas9-mediated Gene Knockouts in Mammalian Cells
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A Simple and Efficient Method to Generate Gene-Knockout and Transgenic Cell Lines.

Jieyu Liu1, Yan Ge1, Na Wang1

  • 1Key Laboratory of Medical Electrophysiology, Ministry of Education and Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan, China.

DNA and Cell Biology
|January 4, 2021
PubMed
Summary

This study presents an optimized method for generating stable cell lines for gene function studies, overcoming challenges with traditional techniques. The new approach efficiently creates gene knockout and coexpressing cell lines within weeks, without needing special equipment or antibiotic selection.

Keywords:
GCaMP6fPIEZO1TRPC5knockoutstable cell linetransgenic

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Area of Science:

  • Molecular Biology
  • Cell Biology
  • Genetics

Background:

  • Stable cell lines are crucial for studying gene function due to their homogeneity and suitability for long-term experiments.
  • Conventional methods for generating stable cell lines, such as limiting dilution, present technical challenges and can be time-consuming.
  • Efficient generation of stable cell lines is essential for advancing functional genomics research.

Purpose of the Study:

  • To develop and optimize a method for the efficient creation of stable cell lines for gene function studies.
  • To demonstrate the utility of the method in generating gene knockout and coexpressing cell lines.
  • To provide a broadly applicable technique that bypasses the need for antibiotic selection.

Main Methods:

  • CRISPR/Cas9 technology was employed for gene knockout.
  • Exogenous gene expression was achieved through coexpression.
  • The optimized method facilitates monoclonal cell line isolation without antibiotic selection.

Main Results:

  • A PIEZO1 gene knockout (KO) cell line was successfully generated using CRISPR/Cas9.
  • TRPC5/GCaMP6f-mCherry coexpressing cell lines were created efficiently.
  • Monoclonal cell lines were obtained within 2-4 weeks post-transfection, demonstrating high efficiency.

Conclusions:

  • The described optimized method significantly improves the efficiency of stable cell line generation for functional studies.
  • This technique is accessible to laboratories with standard cell-culture facilities, requiring no specialized equipment or consumables.
  • The method offers a faster and more convenient alternative to traditional techniques for creating genetically modified cell lines.