Helper-dependent adenovirus vectors devoid of all viral genes cause less myocardial inflammation compared with first-generation adenovirus vectors

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Serval ID
serval:BIB_3D79E315B527
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Helper-dependent adenovirus vectors devoid of all viral genes cause less myocardial inflammation compared with first-generation adenovirus vectors
Journal
Basic Research in Cardiology
Author(s)
Fleury  S., Driscoll  R., Simeoni  E., Dudler  J., von Segesser  L. K., Kappenberger  L., Vassalli  G.
ISSN
0300-8428 (Print)
Publication state
Published
Issued date
07/2004
Volume
99
Number
4
Pages
247-56
Notes
Comparative Study
Journal Article
Research Support, Non-U.S. Gov't --- Old month value: Jul
Abstract
BACKGROUND: First-generation, E1-deleted (deltaE1) adenovirus vectors currently used in cardiovascular gene therapy trials are limited by tissue inflammation, mainly due to immune responses to viral gene products. Recently, helper-dependent (HD; also referred to as "gutless") adenovirus vectors devoid of all viral coding sequences have been shown to cause low inflammation when injected intravenously or into skeletal muscles. However, HD vectors have not been evaluated in cardiovascular tissues. METHODS AND RESULTS: HD and deltaE1 vectors containing a cytomegalovirus-driven expression cassette for the green fluorescent protein (GFP) gene were administered intramyocardially to adult rats (n = 54). GFP expression was measured by ELISA at varying time intervals after gene transfer. HD and deltaE1 vectors were equally efficient at transducing the myocardium. Tissue inflammation was assessed by immunostaining for leukocytes and quantitative real-time RT-PCR for cytokine mRNA expression. Monocyte/macrophages, CD4(+) and CD8(+) lymphocytes infiltrating the myocardium were less abundant with HD than deltaE1 vectors. Transcripts levels for pro-inflammatory cytokines such as IL-1beta, tumor necrosis factor-alpha, and RANTES were decreased with HD vectors. However, both vectors were associated with a decline in GFP expression over time, although low-level expression was occasionally detectable 10 weeks after HD vector administration. The two vectors transduced endothelial cells in rat arteries (n = 11) with comparable efficiencies. Vascular GFP expression was not detectable at 10 weeks. CONCLUSIONS: HD vectors are as efficient as deltaE1 vectors at transducing the myocardium and vascular endothelium, while causing less myocardial inflammation. Thus, HD vectors may be superior to earlier-generation adenovirus vectors for cardiovascular gene therapy applications.
Keywords
Adenoviridae Adenoviridae Infections Animals Cardiovascular Diseases/therapy Cytokines/metabolism Gene Therapy/*adverse effects/*methods *Genetic Vectors Green Fluorescent Proteins/genetics Immunohistochemistry Male Myocarditis/metabolism/pathology/*virology Myocardium/*metabolism/*pathology Rats Rats, Sprague-Dawley Reverse Transcriptase Polymerase Chain Reaction
Pubmed
Web of science
Open Access
Yes
Create date
15/02/2008 12:28
Last modification date
01/10/2019 7:17
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