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Human Vascular Endothelial Growth Factor A165 Expression Induces the Mouse Model of Neovascular Age-Related Macular Degeneration

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Date
2018
Author(s)
Kokki, E
Karttunen, T
Olsson, V
Kinnunen, K
Ylä-Herttuala, S
Unique identifier
10.3390/genes9090438
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Citation
Kokki, E. Karttunen, T. Olsson, V. Kinnunen, K. Ylä-Herttuala, S. (2018). Human Vascular Endothelial Growth Factor A165 Expression Induces the Mouse Model of Neovascular Age-Related Macular Degeneration.  Genes, 9 (9) , E438. 10.3390/genes9090438.
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CC BY http://creativecommons.org/licenses/by/4.0/
Abstract

Vascular endothelial growth factor (VEGF) expression induces age-related macular degeneration (AMD), which is a common vision-threatening disease due to choroidal neovascularization and a fibrovascular membrane. We describe a mouse model of neovascular AMD with the local expression of human VEGF-A165 in the eye. We use a transgenic mouse in which human VEGF-A165 has been silenced with the loxP-STOP fragment. The choroidal neovascularization and human VEGF-A165 expression in the mouse are induced by subretinal adenoviral Cre gene delivery. Cre gene transfer is compared with adenoviral LacZ gene transfer control. We characterize the AMD phenotype and changes in the vasculature by using fluorescein angiography, optical coherence tomography, and immunohistochemistry. At early time points, mice exhibit increases in retinal thickness (348 ± 114 µm vs. 231 ± 32 µm) and choroidal neovascularization area (12000 ± 15174 µm2 vs. 2169 ± 3495 µm2) compared with the control. At later time points, choroidal neovascularization develops into subretinal fibrovascular membrane. Human VEGF-A165 expression lasts several weeks. In conclusion, the retinas display vascular abnormalities consistent with choroidal neovascularization. Together with immunohistochemical findings, these changes resemble clinical AMD-like ocular pathologies. We conclude that this mouse model of Cre-induced choroidal neovascularization is useful for mimicking the pathogenesis of AMD, studying the effects of human VEGF-A165 in the retina, and evaluating anti-VEGF treatments for choroidal neovascularization.

Subjects
adenovirus   age-related macular degeneration   animal model   gene therapy   gene transfer   neovascularization   subretinal   vascular endothelial growth factor   
URI
https://erepo.uef.fi/handle/123456789/6989
Link to the original item
http://dx.doi.org/10.3390/genes9090438
Publisher
MDPI AG
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  • Terveystieteiden tiedekunta [1337]
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