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Recombinant AAV vector encoding human VEGF165 enhances wound healing.

B Deodato1, N Arsic, L Zentilin

  • 1Molecular Medicine Laboratory, International Center for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy.

Gene Therapy
|June 1, 2002
PubMed
Summary

Gene therapy using adeno-associated virus (AAV) vectors delivering vascular endothelial growth factor-A (VEGF-A) effectively accelerates wound healing. This approach promotes new blood vessel formation, aiding recovery in challenging wounds.

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Area of Science:

  • Regenerative Medicine
  • Gene Therapy
  • Wound Healing Research

Background:

  • Difficult-to-heal wounds, often seen in metabolic disorders or infections, pose significant clinical challenges.
  • Enhancing new blood vessel formation (neo-angiogenesis) is a key therapeutic strategy for improving wound repair.
  • Adeno-associated virus (AAV) vectors are being explored for targeted gene delivery in therapeutic applications.

Purpose of the Study:

  • To evaluate the efficacy of AAV-mediated gene therapy for wound healing.
  • To investigate the role of vascular endothelial growth factor-A (VEGF-A) in accelerating wound repair.
  • To assess the potential of VEGF gene transfer as a novel treatment for wound healing disorders.

Main Methods:

  • Utilized adeno-associated virus (AAV) vectors to deliver the gene for vascular endothelial growth factor-A (VEGF-A) isoform 165.
  • Administered VEGF165 gene therapy to full-thickness excisional wounds in a rat model.
  • Employed gene marker studies for efficient gene transfer assessment and histological examination for tissue remodeling analysis.

Main Results:

  • AAV vectors demonstrated high efficiency and sustained gene transfer to rat skin, specifically targeting the panniculus carnosus.
  • VEGF165 gene delivery significantly induced neo-angiogenesis at the wound site.
  • Treated wounds exhibited accelerated epidermal and dermal remodeling, reduced healing time, and formation of new, larger blood vessels.

Conclusions:

  • VEGF gene transfer via AAV vectors is a potent stimulator of neo-angiogenesis, crucial for wound healing.
  • This gene therapy approach shows significant promise for treating disorders characterized by impaired wound healing.
  • The findings highlight the therapeutic potential of targeting VEGF pathways for enhanced tissue regeneration.