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Genome manipulation in embryonic stem cells

J Rossant1, C Bernelot-Moens, A Nagy

  • 1Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Canada.

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
|February 27, 1993
PubMed
Summary
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Embryonic stem cells enable precise genome manipulation in mammals. They are crucial for generating recessive mutations through targeted or insertional mutagenesis, offering insights beyond traditional transgenic mice.

Area of Science:

  • Mammalian developmental biology
  • Stem cell research
  • Genetics and genomics

Background:

  • Embryonic stem (ES) cells are derived from early mouse embryos.
  • ES cells offer a versatile platform for genetic studies in mammals.

Purpose of the Study:

  • To explore the utility of ES cells for genome manipulation.
  • To highlight ES cells' role in generating dominant and recessive mutations.
  • To discuss current and future strategies in ES cell-based genetic engineering.

Main Methods:

  • Gene misexpression or ectopic expression using introduced constructs.
  • Expression of altered gene products or antisense constructs.
  • Generation of ES cell chimeras for phenotypic analysis.
  • Targeted and insertional mutagenesis for creating recessive mutations.

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Main Results:

  • ES cells facilitate dominant effects through altered gene expression.
  • ES cell chimeras provide unique data compared to transgenic mice.
  • ES cells are highly effective for generating recessive mutations in genes.

Conclusions:

  • ES cells are a powerful tool for mammalian genome manipulation.
  • ES cell technology is particularly vital for studying recessive genetic disorders.
  • Future strategies will likely expand ES cell applications in genetic research.