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Tetracycline-regulated gene expression in epidermal keratinocytes
Richard B Presland1, Philip Fleckman
1Department of Oral Biology and Medicine, University of Seattle, WA, USA.
Methods in Molecular Biology (Clifton, N.J.)
|October 27, 2004
Summary
The tetracycline-regulated expression system offers precise control over gene expression in cells and animals. This powerful genetic tool enables controlled gene studies, including those with toxic genes.
Area of Science:
- Molecular Biology
- Genetics
- Cell Biology
Background:
- The tetracycline-regulated expression system provides a method for inducible gene expression.
- It utilizes a prokaryotic tetracycline repressor (TetR) and a tetracycline-response element.
Purpose of the Study:
- To review the Tet system methodology for precise gene control.
- To describe the preparation and characterization of keratinocyte cell lines using tetracycline control.
- To exemplify the system with keratinocytes expressing human filaggrin.
Main Methods:
- Development of stable cell lines expressing TetR variants (tTA or rtTA-VP16).
- Creation of double-stable cell lines containing both TetR and a response plasmid.
- Characterization of keratinocyte cell lines for tetracycline-regulated gene expression.
Main Results:
- Demonstrated successful tetracycline-regulated expression of human filaggrin in keratinocytes.
- Established methodology for creating and validating Tet system-based cell lines.
- Highlighted the system's applicability using retrovirus and adenovirus vectors.
Conclusions:
- The Tet system is a versatile tool for controlling gene expression in various cell types and organisms.
- It facilitates the study of genes, including those toxic to cells, and their roles in cell regulation.
- This system aids in understanding gene regulation of cell structure, function, growth, and differentiation.