PMID: 9535450Apr 16, 1998Paper

Ex vivo adenovirus-mediated gene transfer to the adult rat heart

The Journal of Thoracic and Cardiovascular Surgery
A P KypsonW J Koch

Abstract

The ability to transfer genes to adult myocardium may have therapeutic implications for cardiac transplantation. We investigated the feasibility of adenovirus-mediated transfer of marker genes LacZ and Luciferase, as well as the potentially therapeutic gene of the human beta2-adrenergic receptor in a rat heterotopic heart transplant model. Donor hearts were flushed with 10(12) total viral particles of one of three transgenes. Hearts were harvested at various time points after transplantation. LacZ-treated hearts were assessed by histologic staining and Luciferase-treated hearts were assayed for specific luminescence activity. Hearts treated with beta2-adrenergic receptor underwent radioligand binding assays and immunohistochemistry with the use of an antibody specific for the human beta2-adrenergic receptor. LacZ hearts revealed diffuse myocyte staining as opposed to none within controls at 5 days. Luciferase hearts demonstrated a mean activity of 970,000 +/- 220,000 arbitrary light units versus 500 +/- 200 for the controls (p = 0.001). Total beta2-adrenergic receptor densities (fmol/mg membrane protein) for hearts that received the beta2-adrenergic receptor transgene at 3, 5, 7, 10, and 14 days after infection were as follows:...Continue Reading

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Citations

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