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Targeted somatic mutagenesis in mouse epidermis.

A K Indra1, M Li, J Brocard

  • 1Institut de Génétique et de Biologie Moléculaire et Cellulaire, CNRS/INSERM/ULP, Collège de France, Illkirch, France.

Hormone Research
|October 12, 2001
PubMed
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Researchers developed new mouse models for studying gene function in the skin. These models allow for precise genetic modifications in epidermal cells, aiding disease research.

Area of Science:

  • Genetics
  • Molecular Biology
  • Dermatology

Background:

  • Gene targeting in mice is crucial for understanding mammalian gene function.
  • Precise control over somatic mutations enhances the study of gene function and disease modeling.

Purpose of the Study:

  • To establish transgenic mouse models for targeted somatic mutations in the epidermis.
  • To enable temporal and cell-type-specific gene manipulation in skin keratinocytes.

Main Methods:

  • Generation of transgenic mice expressing Cre recombinase or tamoxifen-inducible Cre-ER(T2) under the keratin 14 promoter.
  • Analysis of LoxP-flanked DNA segment excision in epidermal keratinocytes.
  • Assessment of tamoxifen-induced recombination in K14-Cre-ER(T2) mice.

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Main Results:

  • Efficient excision of floxed DNA segments in epidermal keratinocytes of K14-Cre mice.
  • Tamoxifen administration induced efficient recombination in basal keratinocytes of K14-Cre-ER(T2) mice.
  • No significant background recombination observed in K14-Cre-ER(T2) mice without tamoxifen.

Conclusions:

  • Established two transgenic mouse lines (K14-Cre and K14-Cre-ER(T2)) for epidermal gene targeting.
  • These models facilitate the analysis of gene function in keratinocytes.
  • Valuable tools for generating animal models of human skin diseases.