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Related Concept Videos

In-vitro Mutagenesis01:16

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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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Mice have long served as models for studying human biology and pathology because of their phylogenetic and physiological similarity with humans. They are also easy to maintain and breed in the laboratory, and hence, many inbred strains are now available for research. Studies on mice have contributed immeasurably to our understanding of cancer biology.
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...
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Related Experiment Video

Updated: Jul 16, 2025

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Approaches for timeline reductions in pathogenesis studies using genetically modified mice.

Samantha Skavicus1, Nicholas S Heaton1,2

  • 1Department of Molecular Genetics and Microbiology, Duke University School of Medicine , Durham, North Carolina, USA.

Microbiology Spectrum
|September 11, 2023
PubMed
Summary
This summary is machine-generated.

Researchers optimized an in oviduct CRISPR-based gene editing technique for microbiologists. This method rapidly generates knockout mice, enabling faster host factor analysis in infectious disease models within 11 weeks.

Keywords:
CRISPRIRF9Mx1knockout micetransgenic mice

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Area of Science:

  • Microbiology
  • Genetics
  • Immunology

Background:

  • Genetically modified mouse models are crucial for microbiology research but are costly and time-consuming to generate.
  • While in vivo clustered regularly interspaced short palindromic repeats (CRISPR) technology promises faster genome manipulation, its impact on experimental timelines remained unclear.

Purpose of the Study:

  • To optimize an in oviduct murine genetic manipulation technique for use by microbiologists.
  • To establish a rapid protocol for generating knockout mice and testing host factors in disease models.

Main Methods:

  • Optimization of an in oviduct murine genetic manipulation technique.
  • Generation of knockout mice using this optimized protocol.
  • Utilizing an influenza A virus infection model to assess host factor importance.

Main Results:

  • A protocol was detailed for generating knockout mice and testing host factors in as little as 11 weeks.
  • The method allows for preliminary host factor importance testing before a fully backcrossed knockout line is established (~22 weeks).

Conclusions:

  • This optimized in vivo CRISPR-based approach significantly reduces the time and resources needed for generating genetically modified mice in microbiology.
  • Wider adoption will accelerate the discovery of pathogenic mechanisms and the development of novel therapies for infectious diseases.