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Updated: May 11, 2026
11:48
Genetic Manipulation of the Mouse Developing Hypothalamus through In utero Electroporation
Published on: July 24, 2013
An inducible and reversible mouse genetic rescue system
Hongkui Zeng1, Kyoji Horie, Linda Madisen
1Omeros Corporation, Seattle, Washington, United States of America.
Plos Genetics
|May 10, 2008
Summary
Researchers developed a novel inducible and reversible gene knockout (iKO) system in mice. This doxycycline-controlled method allows precise control over gene expression, enabling functional studies and disease modeling.
Area of Science:
- Genetics and Genomics
- Molecular Biology
- Animal Models
Background:
- Inducible and reversible gene regulation is crucial for understanding gene function.
- Existing methods for gene knockout and rescue can be limited in efficiency and control.
Purpose of the Study:
- To establish a general, efficient, and reversible method for inducible gene knockout and rescue in mice.
- To create a versatile genetic system for high-throughput functional genomics and disease modeling.
Main Methods:
- Developed the inducible knockout (iKO) system combining two genetically modified mouse lines: a tetracycline-dependent transactivator KO line and a tetracycline-inducible cDNA line in a TIGRE locus.
- Engineered mouse embryonic stem (ES) cells for recombinase-mediated insertion into the TIGRE site for efficient gene introduction.
- Validated the iKO system using apolipoprotein E (ApoE) gene knockout mice for phenotypic analysis.
Main Results:
- Demonstrated reversible switching of apolipoprotein E (ApoE) transcription in iKO mice upon doxycycline treatment.
- Showcased reversible changes in plasma cholesterol levels and atherosclerosis progression/regression in ApoE iKO mice.
- Confirmed stringent regulation and high inducibility of the iKO system.
Conclusions:
- The iKO system provides a powerful and versatile tool for inducible and reversible gene manipulation in mice.
- This method facilitates efficient gene function discovery and the development of sophisticated disease models.
- The iKO system is adaptable for high-throughput applications and integration with other genetic techniques.
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