Technical requirements for effective regional hydrodynamic gene delivery to the left lateral lobe of the rat liver.

Abstract:

:Hydrodynamic gene delivery to the liver is an attractive approach for clinical liver gene therapy, but critical aspects of technique remain uncertain. There has not been to date any report of high levels of hydrodynamic gene delivery to the liver, except in rodents. Regional hydrodynamic delivery to individual lobes/segments of the liver is being pursued in preclinical pig models, where reporter gene expression has been <1% of rodent levels, and in one clinical study, where there was no substantive evidence of gene expression. In none of these studies did surgical technique include outflow obstruction of the DNA solution. Here we report a novel technique for regional hydrodynamic gene delivery to the left lateral lobe of the rat liver. The technique gives high levels of gene delivery specific to the left lateral lobe with low volumes ( approximately 1.5 ml) of DNA solution, and permits an evaluation of hydrodynamic delivery in the presence and in the absence of outflow obstruction. We report that outflow obstruction is an absolute requirement for effective hydrodynamic gene delivery to individual lobes/segments of the liver, and therefore that minimally invasive techniques will not be possible in the clinic.

journal_name

Gene Ther

journal_title

Gene therapy

authors

Sawyer GJ,Zhang X,Fabre JW

doi

10.1038/gt.2009.167

subject

Has Abstract

pub_date

2010-04-01 00:00:00

pages

560-4

issue

4

eissn

0969-7128

issn

1476-5462

pii

gt2009167

journal_volume

17

pub_type

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