Echocardiographic destruction of albumin microbubbles directs gene delivery to the myocardium

Ralph V. Shohet, Shuyuan Chen, Yan Ting Zhou, Zhuowei Wang, Robert S. Meidell, Roger H Unger, Paul A. Grayburn

Research output: Contribution to journalArticle

409 Citations (Scopus)

Abstract

Background - The noninvasive, tissue-specific delivery of therapeutic agents to the heart would be a valuable clinical tool. This study addressed the hypothesis that albumin-coated microbubbles could be used to effectively deliver an adenoviral transgene to rat myocardium by ultrasound-mediated microbubble destruction. Methods and Results - Recombinant adenovirus containing β-galactosidase and driven by a constitutive promoter was attached to the surface of albumin-coated, perfluoropropane-filled microbubbles. These bubbles were infused into the jugular vein of rats with or without simultaneous echocardiography. Additional controls included ultrasound of microbubbles that did not contain virus, virus alone, and virus plus ultrasound. One group underwent ultrasound-mediated destruction of microbubbles followed by adenovirus infusion. Rats were killed after 4 days and examined for β-galactosidase expression. The hearts of all rats that underwent ultrasound-mediated destruction of microbubbles containing virus showed nuclear staining with 5-bromo-4-chloro-3-indolyl-β-D- galactopyranoside substrate, indicating expression of the transgene. None of the control animals showed myocardial expression of the β-galactosidase transgene. By quantitative analysis, β-galactosidase activity was 10-fold higher in the treated group than in controls (P < 0.0001). Conclusions - Ultrasound-mediated destruction of albumin-coated microbubbles is a promising method for the delivery of bioactive agents to the heart.

Original languageEnglish (US)
Pages (from-to)2554-2556
Number of pages3
JournalCirculation
Volume101
Issue number22
StatePublished - Jun 6 2000

Fingerprint

Microbubbles
Albumins
Myocardium
Galactosidases
Genes
Transgenes
Viruses
perflutren
Adenoviridae
Jugular Veins
Galactose
Echocardiography
Staining and Labeling
Control Groups

Keywords

  • Echocardiography
  • Gene therapy
  • Microbubbles

ASJC Scopus subject areas

  • Physiology
  • Cardiology and Cardiovascular Medicine

Cite this

Shohet, R. V., Chen, S., Zhou, Y. T., Wang, Z., Meidell, R. S., Unger, R. H., & Grayburn, P. A. (2000). Echocardiographic destruction of albumin microbubbles directs gene delivery to the myocardium. Circulation, 101(22), 2554-2556.

Echocardiographic destruction of albumin microbubbles directs gene delivery to the myocardium. / Shohet, Ralph V.; Chen, Shuyuan; Zhou, Yan Ting; Wang, Zhuowei; Meidell, Robert S.; Unger, Roger H; Grayburn, Paul A.

In: Circulation, Vol. 101, No. 22, 06.06.2000, p. 2554-2556.

Research output: Contribution to journalArticle

Shohet, RV, Chen, S, Zhou, YT, Wang, Z, Meidell, RS, Unger, RH & Grayburn, PA 2000, 'Echocardiographic destruction of albumin microbubbles directs gene delivery to the myocardium', Circulation, vol. 101, no. 22, pp. 2554-2556.
Shohet RV, Chen S, Zhou YT, Wang Z, Meidell RS, Unger RH et al. Echocardiographic destruction of albumin microbubbles directs gene delivery to the myocardium. Circulation. 2000 Jun 6;101(22):2554-2556.
Shohet, Ralph V. ; Chen, Shuyuan ; Zhou, Yan Ting ; Wang, Zhuowei ; Meidell, Robert S. ; Unger, Roger H ; Grayburn, Paul A. / Echocardiographic destruction of albumin microbubbles directs gene delivery to the myocardium. In: Circulation. 2000 ; Vol. 101, No. 22. pp. 2554-2556.
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