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Related Experiment Videos

Switching on the lights for gene therapy.

Alexandra Winkeler1, Miguel Sena-Esteves, Leonie E M Paulis

  • 1Laboratory for Gene Therapy and Molecular Imaging at the Max Planck-Institute for Neurological Research, Center for Molecular Medicine (CMMC) and Department of Neurology, University of Cologne, Cologne, Germany.

Plos One
|June 15, 2007
PubMed
Summary

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This summary is machine-generated.

Researchers developed novel herpes simplex virus type 1 (HSV-1) amplicon vectors for non-invasive gene expression imaging. These versatile vectors enable in vivo monitoring of therapeutic gene regulation using positron emission tomography (PET) and bioluminescence imaging (BLI).

Area of Science:

  • Molecular Biology
  • Biotechnology
  • Medical Imaging

Background:

  • Non-invasive, quantitative imaging of in vivo gene expression is crucial for understanding disease mechanisms and gene therapy.
  • Assessing gene regulation dynamics aids in detecting endogenous biological alterations and monitoring therapeutic gene induction.

Purpose of the Study:

  • To demonstrate the feasibility of non-invasive imaging for regulated gene expression in vivo using versatile vectors.
  • To generate regulatable herpes simplex virus type 1 (HSV-1) amplicon vectors for monitoring gene expression dynamics.

Main Methods:

  • Generated HSV-1 amplicon vectors with hormone (mifepristone) or antibiotic (tetracycline) regulated promoters.
  • Engineered vectors for proportional co-expression of two marker genes.

Related Experiment Videos

  • Monitored gene expression using fluorescence microscopy in culture, and positron emission tomography (PET) or bioluminescence imaging (BLI) in vivo.

    • Main Results:

    • Demonstrated successful in vivo monitoring of regulated gene expression using the developed vectors.
    • Observed varying induction levels in glioma models dependent on inductor dosage.
    • Validated PET and BLI as effective tools for assessing gene expression in animal models and potential human applications.

    Conclusions:

    • The generated regulatable HSV-1 amplicon vectors provide a versatile platform for non-invasive gene expression monitoring.
    • These vectors facilitate the study of gene regulation dynamics in research settings with potential for clinical translation.
    • Co-expression of marker genes with the gene of interest allows for proportional imaging of gene activity.