Gene therapy strategy for long-term myocardial protection using adeno-associated virus-mediated delivery of heme oxygenase gene

被引:255
作者
Melo, LG
Agrawal, R
Zhang, LN
Rezvani, M
Mangi, AA
Ehsan, A
Griese, DP
Dell'Acqua, G
Mann, MJ
Oyama, J
Yet, SF
Layne, MD
Perrella, MA
Dzau, VJ
机构
[1] Brigham & Womens Hosp, Dept Med, Boston, MA 02115 USA
[2] Harvard Univ, Sch Med, Boston, MA 02115 USA
关键词
gene therapy; ischemia; reperfusion; myocardium; viruses;
D O I
10.1161/hc0502.103363
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background-Ischemia and oxidative stress are the leading mechanisms for tissue injury. An ideal strategy for preventive/protective therapy would be to develop an approach that could confer long-term transgene expression and, consequently, tissue protection from repeated ischemia/reperfusion injury with a single administration of a therapeutic gene. In the present study, we used recombinant adeno-associated virus (rAAV) as a vector for direct delivery of the cytoprotective gene heme oxygenase-1 (HO-1) into the rat myocardium, with the purpose of evaluating this strategy as a therapeutic approach for long-term protection from ischemia-induced myocardial injury. Methods and Results-Human HO-1 gene (hHO-1) was delivered to normal rat hearts by intramyocardial injection. AAV-mediated transfer of the hHO-1 gene 8 weeks before acute coronary artery ligation and release led to a dramatic reduction (>75%) in left ventricular myocardial infarction. The reduction in infarct size was accompanied by decreases in myocardial lipid peroxidation and in proapoptotic Bax and proinflammatory interleukin-1beta protein abundance, concomitant with an increase in antiapoptotic Bcl-2 protein level. This suggested that the transgene exerts its cardioprotective effects in part by reducing oxidative stress and associated inflammation and apoptotic cell death. Conclusions-This study documents the beneficial therapeutic effect of rAAV-mediated transfer, before myocardial injury, of a cytoprotective gene that confers long-term myocardial protection from ischemia/reperfusion injury. Our data suggest that this novel "pre-event" gene transfer approach may provide sustained tissue protection from future repeated episodes of injury and may be beneficial as preventive therapy for patients with or at risk of developing coronary ischemic events.
引用
收藏
页码:602 / 607
页数:6
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