VEGF(165) EXPRESSED BY A REPLICATION-DEFICIENT RECOMBINANT ADENOVIRUS VECTOR INDUCES ANGIOGENESIS IN-VIVO

被引:132
作者
MUHLHAUSER, J
MERRILL, MJ
PILI, R
MAEDA, H
BACIC, M
BEWIG, B
PASSANITI, A
EDWARDS, NA
CRYSTAL, RG
CAPOGROSSI, MC
机构
[1] NIA,GERONTOL RES CTR,CARDIOVASC SCI LAB,GENE THERAPY UNIT,BALTIMORE,MD 21224
[2] NHLBI,PULM BRANCH,BETHESDA,MD 20892
[3] NINCDS,SURG NEUROL BRANCH,BETHESDA,MD 20892
[4] NIA,BIOL CHEM LAB,BALTIMORE,MD 21224
[5] CORNELL UNIV,MED CTR,NEW YORK HOSP,DIV PULM & CRIT CARE,NEW YORK,NY 10021
[6] IST DERMOPAT IMMACOLATA,PATOL VASC LAB,ROME,ITALY
关键词
ANGIOGENESIS; ENDOTHELIUM; GENE THERAPY; VEGF; VASCULAR PERMEABILITY FACTOR;
D O I
10.1161/01.RES.77.6.1077
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
To evaluate the concept that localized delivery of angiogenic factors via virus-mediated gene transfer may be useful in the treatment of ischemic disorders, the replication-deficient adenovirus (Ad) vector AdCMV.VEGF(165) (where CMV is cytomegalovirus and VEGF is vascular endothelial growth factor) containing the cDNA for human VEGF(165) secreted endothelial cell-specific angiogenic growth factor, was constructed. Human umbilical vein endothelial cells (HUVECs) and rat aorta smooth muscle cells (RASMCs) infected with AdCMV.VEGF(165) (5 and 20 plaque-forming units [pfu] per cell) demonstrated VEGF mRNA expression and protein secretion into the supernatant. Furthermore, the conditioned medium from these cells enhanced vascular permeability in vivo. In contrast, neither VEGF mRNA nor secreted protein was found in uninfected HUVECs or RASMCs or in cells infected with the control vector AdCMV.beta gal (where beta gal is beta-galactosidase). Assessment of starved HUVECs at 14 days demonstrated sixfold more cells for AdCMV. VEGF(165)-infected HUVECs (20 pfu per cell) than for either infected or uninfected control cells. RASMC proliferation was unaffected by infection with AdCMV.VEGF(165). When plated in 2% serum on dishes precoated with reconstituted basement membrane (Matrigel), HUVECs infected with AdCMV.VEGF(165) (20 pfu per cell) differentiated into capillary-like structures. Under similar conditions, both uninfected HUVECs and HUVECs infected with AdCMV.beta gal did not differentiate. To evaluate the ability of AdCMV.VEGF(165) to function in vivo, either AdCMV. VEGF(165) or AdCMV.beta gal (2x10(10) pfu) was resuspended in 0.5 mt Matrigel and injected subcutaneously into mice. Immunohistochemical staining demonstrated VEGF in the tissues surrounding the Matrigel plugs containing AdCMV.VEGF, up to 3 weeks after injection, whereas no VEGF was found in the control plugs with AdCMV.beta gal. Two weeks after injection, there was histological evidence of neovascularization in the tissues surrounding the Matrigel containing AdCMV.VEGF(165) whereas no significant angiogenesis was observed in response to AdCMV.beta gal. Furthermore, the Matrigel plugs with AdCMV.VEGF(165) demonstrated hemoglobin content fourfold higher than the plugs with AdCMV.beta gal. Together, these in vitro and in vivo studies are consistent with the concept that Ad vectors may provide a useful strategy for efficient local delivery of VEGF(165) in the treatment of ischemic diseases.
引用
收藏
页码:1077 / 1086
页数:10
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