Abstract:
:Efficient and homogeneous gene transfer to cardiac myocytes is a major target in myocardial gene therapy. The aim of this study was to determine the conditions permitting efficient, homogeneous, adenovirus-mediated gene transfer to cardiac myocytes, with a view to application during coronary artery catheterization. Gene transfer to adult rat ventricular myocytes was conducted using type 5 adenoviruses carrying the lacZ reporter gene. Adenovirus delivery via coronary arteries was performed on isolated perfused rat hearts, and gene transfer efficiency was analyzed on whole ventricles, freshly isolated myocytes, and cultured myocytes. Single-pass delivery of 1 X 10(9) PFU associated with 1 min of no-flow yielded only 1 +/- 0.5% of positive myocytes. Pretreatment by histamine perfusion (10(-5) M final concentration) increased this value to 30 +/- 9% (p < 0.001), and pretreatment by Ca2+-free buffer perfusion increased it to 67 +/- 8% (p < 0.001). Combination of the two pretreatments had no additional effect. Increasing the viral dose to 3 X 10(9) PFU increased transfection efficiency only in permeabilized vessels. The 1-min no-flow period after adenovirus delivery was crucial for efficient gene transfer: despite histamine pretreatment, only 2 +/- 1% positive myocytes were observed without flow interruption (p < 0.05 versus 1 min of no-flow). Gene transfer was shown to occur in situ during cardiac perfusion, rather than during heart digestion or myocyte isolation. This study shows that highly efficient adenovirus-mediated gene transfer to cardiac myocytes in situ can be achieved by single-pass intracoronary vector delivery, provided that vascular permeability is first increased and coronary flow is briefly interrupted.
journal_name
Hum Gene Therjournal_title
Human gene therapyauthors
Logeart D,Hatem SN,Rücker-Martin C,Chossat N,Névo N,Haddada H,Heimburger M,Perricaudet M,Mercadier JJdoi
10.1089/10430340050015329keywords:
subject
Has Abstractpub_date
2000-05-01 00:00:00pages
1015-22issue
7eissn
1043-0342issn
1557-7422journal_volume
11pub_type
杂志文章abstract::Gene transfer for therapeutic angiogenesis represents a novel treatment for patients with chronic angina refractory to standard medical therapy and not amenable to conventional revascularization. We sought to assess the role of intraoperative multiplane transesophageal echocardiography (MPTEE) in guiding injection of ...
journal_title:Human gene therapy
pub_type: 临床试验,杂志文章
doi:10.1089/10430349950016951
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abstract::Transferring therapeutic genes into the nociceptive system, including dorsal root ganglia (DRGs) and the spinal cord, is potentially a powerful approach for the treatment of chronic pain in humans. Adeno-associated viral vectors (AAVs) are particularly useful in delivering foreign genes to targeted tissues because the...
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journal_title:Human gene therapy
pub_type: 杂志文章
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journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hum.1998.9.16-2309
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journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hum.1996.7.5-647
更新日期:1996-03-20 00:00:00
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journal_title:Human gene therapy
pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:Human gene therapy
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pub_type: 杂志文章
doi:10.1089/hum.1997.8.1-1
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pub_type: 杂志文章,评审
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pub_type: 杂志文章,多中心研究
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