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Targeting multi-cellular organisms.

Min Gong1, Yikang S Rong

  • 1Laboratory of Molecular Cell Biology, National Cancer Institute, National Institutes of Health, Bldg. 37, Rm. 6056D, Bethesda, Maryland 20892, USA.

Current Opinion in Genetics & Development
|April 4, 2003
PubMed
Summary
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Gene targeting in multicellular organisms is now achievable without pluripotent stem cells. Advances in nuclear transfer and in vivo DNA generation enable gene editing in large mammals and Drosophila.

Area of Science:

  • Genetics
  • Molecular Biology
  • Developmental Biology

Background:

  • Historically, homologous recombination for gene targeting in multicellular organisms required pluripotent stem cells, posing a significant challenge.
  • Difficulty in culturing pluripotent stem cells limited gene targeting applications in many species.

Purpose of the Study:

  • To overcome the limitations of pluripotent stem cell culture for gene targeting.
  • To explore alternative methods for achieving gene targeting in diverse animal models.

Main Methods:

  • Utilized cloning by nuclear transfer for gene targeting in large mammals.
  • Developed a method for in vivo generation of linear DNA for whole organism gene targeting in Drosophila.

Main Results:

Related Experiment Videos

  • Successfully generated the first knockout sheep and pigs using nuclear transfer technology.
  • Achieved whole organism gene targeting in Drosophila through in vivo DNA manipulation.

Conclusions:

  • Recent advancements have circumvented the need for pluripotent stem cells in gene targeting.
  • New techniques offer broader possibilities for genetic modification in various animal species, including large mammals and insects.