Cited by 22Virus-based gene therapy researchAngiogenesis and VEGF in CancerRNA Interference and Gene Delivery

AAV2-VEGF-B gene therapy failed to induce angiogenesis in ischemic porcine myocardium due to inflammatory responses

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Korpela, Henna, Lampela, Jaakko, Airaksinen, Jonna, Järveläinen, Niko, Siimes, Satu, Valli, Kaisa, Nieminen, Tiina, Turunen, Minttu +8 more·2022·Gene Therapy

Abstract

Therapeutic angiogenesis induced by gene therapy is a promising approach to treat patients suffering from severe coronary artery disease. In small experimental animals, adeno-associated viruses (AAVs) have shown good transduction efficacy and long-term transgene expression in heart muscle and other tissues. However, it has been difficult to achieve cardiac-specific angiogenic effects with AAV vectors. We tested the hypothesis whether AAV2 gene transfer (1 × 10 13 vg) of vascular endothelial growth factor B (VEGF-B186) together with immunosuppressive corticosteroid treatment can induce long-term cardiac-specific therapeutic effects in the porcine ischemic heart. Gene transfers were delivered percutaneously using direct intramyocardial injections, improving targeting and avoiding direct contact with blood, thus reducing the likelihood of immediate immune reactions. After 1- and 6-month time points, the capillary area was analyzed, myocardial perfusion reserve (MPR) was measured with radiowater positron emission tomography ([15 O]H 2 O-PET), and fluorodeoxyglucose ([18 F]FDG) uptake was used to evaluate myocardial viability. Clinical chemistry and immune responses were analyzed using standard methods. After 1- and 6-month follow-up, AAV2-VEGF-B186 gene transfer failed to induce angiogenesis and improve myocardial perfusion and viability. Here, we show that inflammatory responses attenuated the therapeutic effect of AAV2 gene transfer by significantly reducing successful transduction and long-term gene expression despite the efforts to reduce the likelihood of immune reactions and the use of targeted local gene transfer methods.

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Authors
Korpela, H., Lampela, J., Airaksinen, J., Järveläinen, N., Siimes, S., Valli, K., Nieminen, T., Turunen, M., Grönman, M., Saraste, A., Knuuti, J., Hakulinen, M., Poutiainen, P., Kärjä, V., Nurro, J., & Ylä-Herttuala, S.
Affiliations
  • University of Eastern Finland (FI)
  • University of Turku (FI)
  • Kuopio University Hospital (FI)
Venue
Gene Therapy
Published
2022-02-07
Volume
29
Issue
10-11
Pages
643-652
ISSN
  • 0969-7128 (ISSN-L)
  • 1476-5462
OpenAlex
W4210518486
Cited by
22
References
36
Citations by year
2026: 6 · 2025: 5 · 2024: 4 · 2023: 5 · 2022: 2
FWCI
2.41
Type
journal article
Language
en
Open access
Locations
  • Gene Therapy (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • UTUPub (University of Turku) (submittedVersion, other-oa)
Funders
  • Itä-Suomen Yliopisto
  • Kuopion Yliopistollinen Sairaala
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Angiogenesis and VEGF in Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
Keywords
therapeutic angiogenesis, myocardial ischemia, porcine model, inflammation, corticosteroid immunosuppression, intramyocardial injection, myocardial perfusion reserve, myocardial viability
MeSH terms
Dependovirus, Animals, Genetic Vectors, Myocardium, Swine, Genetic Therapy, Vascular Endothelial Growth Factor A, Vascular Endothelial Growth Factor B

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