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Related Experiment Videos

A regulatory system for target gene expression

M M Burcin1, B W O'Malley, S Y Tsai

  • 1Department of Cell Biology, Baylor College of Medicine, One Baylor Plaza, Houston, Texas 77030, USA

Frontiers in Bioscience : a Journal and Virtual Library
|February 27, 1998
PubMed
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This study introduces a novel gene regulation system for precise temporal control in cells and animals. The system uses a chemical inducer to manage gene expression, overcoming limitations of constitutive transgene expression.

Area of Science:

  • Molecular Biology
  • Gene Regulation
  • Biotechnology

Background:

  • Constitutive transgene expression poses challenges in stable cell lines, animal models, and gene therapy.
  • Existing methods for gene introduction often result in unsatisfactory, uncontrolled transgene expression.

Purpose of the Study:

  • To develop a specific and temporally regulable gene expression system for in vivo applications.
  • To create a system responsive to an orally administered, non-toxic chemical inducer.

Main Methods:

  • Engineered a chimeric regulator (GLVP) combining a mutated human progesterone receptor ligand binding domain (PRLBD-delta), yeast GAL4 DNA binding domain (DBD), and HSV VP16 activation domain.
  • Demonstrated inducible gene expression using the GLVP system with RU486 as the sole regulator.

Related Experiment Videos

  • Showcased inducible repression by replacing the activation domain with a repression domain.

    • Main Results:

    • Achieved specific and temporally regulated target gene expression in vivo.
    • The GLVP system demonstrated regulable expression solely by RU486, independent of progesterone.
    • Inducible repression of gene expression was confirmed in vitro.
    • The system proved effective in transient and stable transfections and in transgenic animals.

    Conclusions:

    • The developed regulatory system offers precise temporal control over gene expression.
    • This system provides a versatile tool for applications in stable cell lines, transgenic animals, and clinical gene therapy.
    • The GLVP system represents a significant advancement in controllable gene expression technologies.