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. 1992 Sep;90(3):936-44.
doi: 10.1172/JCI115970.

Percutaneous arterial gene transfer in a rabbit model. Efficiency in normal and balloon-dilated atherosclerotic arteries

G Leclerc  1 , D Gal, S Takeshita, S Nikol, L Weir, J M Isner
Affiliations

Percutaneous arterial gene transfer in a rabbit model. Efficiency in normal and balloon-dilated atherosclerotic arteries

G Leclerc et al. J Clin Invest. 1992 Sep.

Abstract

The possibility of using an exclusively percutaneous strategy to deliver foreign DNA to normal and balloon-dilated atherosclerotic arteries was studied by analysis of transfection efficiency in a rabbit model. A total of 22 external iliac arteries from 22 rabbits (10 normal and 12 atherosclerotic) were transfected with a solution of luciferase expression vector plasmid and liposome, using a dual balloon-catheter system. Analysis of the transfected segments revealed luciferase activity in 10 of the 22 arteries (4/10 normal vs 6/12 balloon-injured atherosclerotic, P = NS); no activity could be detected in the contralateral limb arterial segments used as controls. Luciferase activity levels in successfully transfected segments measured 4.10 +/- 1.19 (m +/- SEM) Turner light units (TLU), with 3.03 +/- 1.16 TLU found in normals vs 4.81 +/- 1.87 TLU in balloon-injured atherosclerotic arteries (P = NS). In situ hybridization of successfully transfected atherosclerotic sections showed expression of the luciferase gene mRNA from rare cells (less than 1/1,000) limited to the neointimal lesion. Thus, expression of new genetic material may be achieved in both normal and balloon-dilated atherosclerotic arteries following an exclusively percutaneous approach. The low efficiency of the current delivery strategy, however, represents a potential limitation that must be improved if this strategy is to be applied as a therapeutic approach to human vascular disease.

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