Open Access

Improving the efficacy of therapeutic angiogenesis by UTMD-mediated Ang-1 gene delivery to the infarcted myocardium

  • Authors:
    • Qing Deng
    • Bo Hu
    • Sheng Cao
    • Hong-Ning Song
    • Jin-Ling Chen
    • Qing Zhou
  • View Affiliations

  • Published online on: May 28, 2015     https://doi.org/10.3892/ijmm.2015.2226
  • Pages: 335-344
  • Copyright: © Deng et al. This is an open access article distributed under the terms of Creative Commons Attribution License [CC BY_NC 3.0].

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Abstract

This study aimed to verify the feasibility and efficacy of ultrasound-targeted microbubble destruction (UTMD)-mediated angiopoietin-1 (Ang-1) gene delivery into the infarcted myocardium. Microbubbles carrying anti-intercellular adhesion molecule-1 (ICAM-1) antibody were prepared and identified. The microbubbles carrying anti‑ICAM‑1 antibody selectively adhered to the interleukin (IL)-1β-stimulated ECV304 cells and to the ischemic vascular endothelium, and the infarct area was examined to evaluate the targeting ability of ICAM-1 microbubbles in vitro and in vivo. The intravenous administration of the Ang-1 gene was carried out by UTMD in rabbits with acute myocardial infarction (AMI). The rabbits were divided into the control (no treatment), non-targeted microbubble destruction (non-TMB) and the ICAM-1 TMB (TMB) group. Gene delivery by direct intramyocardial injection (IMI) served as a reference. Two weeks later, regional myocardial perfusion and cardiac function were evaluated by echocardiography, and Ang-1 gene-mediated angiogenesis was assessed histologically and biochemically. The results revealed that the ICAM‑1‑targeted microbubbles selectively adhered to the IL‑1β‑stimulated ECV304 cells in vitro and to the ischemic vascular endothelium in the infarct area of the rabbits with AMI. Two weeks after the delivery of the Ang-1 gene, compared with the non-TMB group, left ventricular function and myocardial perfusion at the infarct area had improved in the TMB and IMI group (p<0.01). Ang-1 gene expression was detectable in the non-TMB, TMB and IMI group, while its expression was higher in the latter 2 groups (all p<0.01). The microvascular density (MVD) of the infarct area in the non-TMB, TMB and IMI group was 65.6±4.4, 96.7±2.1 and 100.7±3.6, respectively (p<0.01). The findings of our study indicate that UTMD-mediated gene delivery may be used to successfully deliver the Ang-1 gene to the infarcted myocardium, thus improving the efficacy of therapeutic angiogenesis. This may provide a novel strategy for future gene therapy.
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August-2015
Volume 36 Issue 2

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Spandidos Publications style
Deng Q, Hu B, Cao S, Song H, Chen J and Zhou Q: Improving the efficacy of therapeutic angiogenesis by UTMD-mediated Ang-1 gene delivery to the infarcted myocardium. Int J Mol Med 36: 335-344, 2015
APA
Deng, Q., Hu, B., Cao, S., Song, H., Chen, J., & Zhou, Q. (2015). Improving the efficacy of therapeutic angiogenesis by UTMD-mediated Ang-1 gene delivery to the infarcted myocardium. International Journal of Molecular Medicine, 36, 335-344. https://doi.org/10.3892/ijmm.2015.2226
MLA
Deng, Q., Hu, B., Cao, S., Song, H., Chen, J., Zhou, Q."Improving the efficacy of therapeutic angiogenesis by UTMD-mediated Ang-1 gene delivery to the infarcted myocardium". International Journal of Molecular Medicine 36.2 (2015): 335-344.
Chicago
Deng, Q., Hu, B., Cao, S., Song, H., Chen, J., Zhou, Q."Improving the efficacy of therapeutic angiogenesis by UTMD-mediated Ang-1 gene delivery to the infarcted myocardium". International Journal of Molecular Medicine 36, no. 2 (2015): 335-344. https://doi.org/10.3892/ijmm.2015.2226