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Related Concept Videos

In-vitro Mutagenesis01:16

In-vitro Mutagenesis

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.
Transposons01:24

Transposons

Transposons, or "jumping genes," are small mobile genetic elements (MGEs) that range from 700 to 40,000 base pairs in length. They are found in all organisms and can move within the same chromosome or transfer to different chromosomes. In some cases, transposons can also jump between different host DNA molecules, such as plasmids or viruses, contributing to genetic variability.Barbara McClintock first discovered these mobile genetic elements in the 1940s while studying maize genetics, and she...
DNA-only Transposons02:57

DNA-only Transposons

DNA-only transposons are called autonomous transposons since they code for the enzyme transposase that is required for the transposition mechanism. Insertion of transposons can alter gene functions in multiple ways. They can mutate the gene, alter gene expression by introducing a novel promoter or insulator sequence, introduce new splice sites, and change the mRNA transcripts produced, or remodel chromatin structure.
The donor site from where the transposon is excised is either degraded or...
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Overview of Transposition and Recombination

Transposons make up a significant part of genomes of various organisms. Therefore, it is believed that transposition played a major evolutionary role in speciation by changing genome sizes and modifying gene expression patterns. For example, in bacteria, transposition can lead to conferring antibiotic resistance. Movement of transposable elements within the genetic pool of pathogenic bacteria can aid in transfer of antibiotic-resistant genetic elements. In eukaryotes, transposons can carry out...
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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.
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Lentiviral Mediated Production of Transgenic Mice: A Simple and Highly Efficient Method for Direct Study of Founders
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Published on: October 7, 2018

Current applications of transposons in mouse genetics.

Adam J Dupuy1

  • 1Department of Anatomy and Cell Biology, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA.

Methods in Enzymology
|August 12, 2010
PubMed
Summary

Genetically engineered transposable elements (TEs) are now active in mice, enabling genetic studies previously impossible. These mobile genetic elements offer new tools for research in areas like gene therapy and cancer genetics.

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Area of Science:

  • Genetics
  • Molecular Biology
  • Genomics

Background:

  • Transposable elements (TEs) are mobile genetic sequences crucial for genetic research in many organisms.
  • Historically, mice lacked endogenous active TEs, limiting their use in genetic studies.
  • Recent advancements have introduced active TEs in mice, overcoming this limitation.

Purpose of the Study:

  • To review the molecular characteristics of active transposable elements (TEs) available for mouse genetics.
  • To discuss the diverse applications of these TEs in current mouse research.
  • To highlight the significance of newly developed active TEs for the field of mouse genetics.

Main Methods:

  • Literature review of transposable elements (TEs) active in mice.
  • Summary of molecular characteristics for each TE.
  • Discussion of current applications in mouse genetic studies.

Main Results:

  • Two retrotransposons (Class I TEs) and four DNA transposons (Class II TEs) are now active in mice.
  • These TEs have been successfully applied in germline mutagenesis, transgenesis, and gene therapy.
  • Applications extend to induced pluripotent stem cell production and cancer genetics research.

Conclusions:

  • The development of active transposable elements (TEs) has revolutionized mouse genetics research.
  • These engineered TEs provide powerful tools for diverse genetic applications in mice.
  • The availability of active TEs significantly enhances the utility of mice as a model organism for genetic studies.