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Hydrodynamic gene delivery to the pig liver via an isolated segment of the inferior vena cava.

Abstract：

:Hydrodynamic gene delivery is an attractive option for non-viral liver gene therapy, but requires evaluation of efficacy, safety and clinically applicable techniques in large animal models. We have evaluated retrograde delivery of DNA to the whole liver via the isolated segment of inferior vena cava (IVC) draining the hepatic veins. Pigs (18-20 kg weight) were given the pGL3 plasmid via two programmable syringe pumps in parallel. Volumes corresponding to 2% of body weight (360-400 ml) were delivered at 100 ml s(-1) via a Y connector. The IVC segment pressure, portal venous pressure, arterial pressure, electrocardiogram (ECG) and pulse were monitored. Concurrent studies were performed in rats for interspecies comparisons. The hydrodynamic procedure generated intrahepatic vascular pressures of 101-126 mm Hg, which is approximately 4 times higher than in rodents, but levels of gene delivery were approximately 200-fold lower. Suprahepatic IVC clamping caused a fall in arterial pressure, with the development of ECG signs of myocardial ischaemia, but these abnormalities resolved rapidly. The IVC segment approach is a clinically acceptable approach to liver gene therapy. However, it is less effective in pigs than in rodents, possibly because of larger liver size or a less compliant connective tissue framework.

journal_name

Gene Ther

journal_title

Gene therapy

authors

Fabre JW,Grehan A,Whitehorne M,Sawyer GJ,Dong X,Salehi S,Eckley L,Zhang X,Seddon M,Shah AM,Davenport M,Rela M

doi

10.1038/sj.gt.3303079

subject

Has Abstract

pub_date

2008-03-01 00:00:00

pages

452-62

issue

6

eissn

0969-7128

issn

1476-5462

pii

3303079

journal_volume

15

pub_type

杂志文章

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