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Inducible site-specific recombination in myelinating cells
Nathalie H Doerflinger1, Wendy B Macklin, Brian Popko
1Institut de Génétique et de Biologie Moleculaire et Cellulaire (IGBMC), CNRS, Université Louis Pasteur, Illkirch, France.
Genesis (New York, N.Y. : 2000)
|December 14, 2002
Summary
This study introduces a novel inducible gene ablation model in myelinating cells. This system allows researchers to precisely study gene functions in oligodendrocyte and Schwann cell development and disease.
Area of Science:
- Neuroscience
- Genetics
- Molecular Biology
Background:
- Understanding gene function in myelinating cells is crucial for neurological research.
- Existing models lack precise temporal and cell-specific gene manipulation capabilities.
Purpose of the Study:
- To develop an inducible system for targeted gene ablation in oligodendrocytes and Schwann cells.
- To enable the study of gene function in myelin sheath formation, maintenance, and in pathological conditions.
Main Methods:
- Utilized the Cre/loxP recombination system for tissue-specific somatic mutations in mice.
- Engineered a fusion protein (CreER(T)) for inducible, site-specific recombination.
- Placed CreER(T) expression under the control of the myelin proteolipid protein (PLP) gene promoter.
- Administered tamoxifen to induce nuclear translocation of CreER(T) and recombination.
Main Results:
- Successfully generated myelinating cellspecific gene ablation in PLP/CreER(T) mice upon tamoxifen administration.
- Demonstrated tamoxifen-inducible nuclear translocation of CreER(T) and recombination of a LacZ reporter transgene.
- Confirmed no recombination in untreated animals, indicating tight regulation of the system.
Conclusions:
- The PLP/CreER(T) mouse model provides a powerful tool for inducible gene ablation in myelinating cells.
- This system facilitates the elucidation of gene functions in myelin sheath development and homeostasis.
- The model is valuable for studying oligodendrocyte function in disease contexts.