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Related Experiment Videos

Gene therapy for chronic pain.

Joseph C Glorioso1, Marina Mata, David J Fink

  • 1Department of Molecular Genetics & Biochemistry, University of Pittsburgh School of Medicine, 200 Lothrop Street, Pittsburgh, PA 15213, USA.

Current Opinion in Molecular Therapeutics
|November 7, 2003
PubMed
Summary
This summary is machine-generated.

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Researchers used herpes simplex virus-based vectors to deliver genes for pain-relieving peptides into the spinal cord. This approach effectively reduced chronic pain in animal models, paving the way for human clinical trials.

Area of Science:

  • Neuroscience
  • Gene Therapy
  • Pain Management

Background:

  • The dorsal horn of the spinal cord is a key site for chronic pain transmission.
  • Developing targeted treatments for spinal pain remains challenging.
  • Viral vector-mediated gene transfer offers a potential strategy for localized drug delivery.

Purpose of the Study:

  • To evaluate the efficacy of herpes simplex virus-based vectors for delivering analgesic peptides to the spinal cord.
  • To assess the potential of this gene therapy approach for treating chronic pain.

Main Methods:

  • Herpes simplex virus-based vectors expressing proenkephalin were developed.
  • Vectors were delivered via subcutaneous inoculation, targeting dorsal root ganglion neurons.
  • Enkephalin release in the dorsal horn was measured.

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  • Analgesic effects were evaluated in several chronic pain models.

    • Main Results:

    • Subcutaneous inoculation of vectors successfully transduced dorsal root ganglion neurons.
    • This resulted in the focal production and release of enkephalin from nerve terminals in the dorsal horn.
    • Significant analgesic effects were observed in multiple chronic pain models.

    Conclusions:

    • Viral vector-mediated gene transfer, specifically using herpes simplex virus vectors to deliver proenkephalin, is a viable strategy for targeting spinal pain.
    • This approach leads to localized release of short-lived analgesic peptides, effectively reducing chronic pain.
    • The promising results support the commencement of a clinical trial for this novel pain treatment.