Controlling neuropathic pain by adeno-associated virus driven production of the anti-inflammatory cytokine, interleukin-10

Mol Pain. 2005 Feb 25:1:9. doi: 10.1186/1744-8069-1-9.

Abstract

Despite many decades of drug development, effective therapies for neuropathic pain remain elusive. The recent recognition of spinal cord glia and glial pro-inflammatory cytokines as important contributors to neuropathic pain suggests an alternative therapeutic strategy; that is, targeting glial activation or its downstream consequences. While several glial-selective drugs have been successful in controlling neuropathic pain in animal models, none are optimal for human use. Thus the aim of the present studies was to explore a novel approach for controlling neuropathic pain. Here, an adeno-associated viral (serotype II; AAV2) vector was created that encodes the anti-inflammatory cytokine, interleukin-10 (IL-10). This anti-inflammatory cytokine is known to suppress the production of pro-inflammatory cytokines. Upon intrathecal administration, this novel AAV2-IL-10 vector was successful in transiently preventing and reversing neuropathic pain. Intrathecal administration of an AAV2 vector encoding beta-galactosidase revealed that AAV2 preferentially infects meningeal cells surrounding the CSF space. Taken together, these data provide initial support that intrathecal gene therapy to drive the production of IL-10 may prove to be an efficacious treatment for neuropathic pain.

Publication types

  • Comparative Study
  • Research Support, N.I.H., Extramural

MeSH terms

  • Animals
  • Dependovirus / genetics*
  • Dependovirus / physiology
  • Disease Models, Animal
  • Genetic Therapy / methods*
  • Genetic Vectors / administration & dosage
  • Genetic Vectors / therapeutic use
  • Humans
  • Inflammation / metabolism
  • Inflammation / prevention & control
  • Inflammation / virology
  • Inflammation Mediators / physiology*
  • Injections, Spinal
  • Interleukin-10 / biosynthesis*
  • Interleukin-10 / genetics*
  • Interleukin-10 / physiology
  • Male
  • Rats
  • Rats, Sprague-Dawley
  • Sciatic Nerve / physiopathology*
  • Sciatica / metabolism
  • Sciatica / physiopathology*
  • Sciatica / prevention & control*

Substances

  • Inflammation Mediators
  • Interleukin-10