Vasculogenesis in Experimental Stroke After Human Cerebral Endothelial Cell Transplantation

被引:64
|
作者
Ishikawa, Hiroto [1 ,2 ]
Tajiri, Naoki [1 ]
Shinozuka, Kazutaka [1 ]
Vasconcellos, Julie [1 ]
Kaneko, Yuji [1 ]
Lee, Hong J. [3 ]
Mimura, Osamu [2 ]
Dezawa, Mari [4 ,5 ]
Kim, Seung U. [6 ]
Borlongan, Cesar V. [1 ]
机构
[1] Univ S Florida, Dept Neurosurg & Brain Repair, Coll Med, Tampa, FL 33612 USA
[2] Hyogo Coll Med, Dept Ophthalmol, Nishinomiya, Hyogo 6638501, Japan
[3] Chung Ang Univ, Coll Med, Med Res Inst, Seoul 156756, South Korea
[4] Tohoku Univ, Grad Sch Med, Dept Stem Cell Biol & Histol, Sendai, Miyagi 980, Japan
[5] Tohoku Univ, Grad Sch Med, Dept Anat & Anthropol, Sendai, Miyagi 980, Japan
[6] Univ British Columbia, Dept Neurol, Vancouver, BC V5Z 1M9, Canada
基金
美国国家卫生研究院;
关键词
endothelial cells; neurogenesis; stem cells; stroke; NEURAL STEM-CELLS; PROMOTES FUNCTIONAL RECOVERY; BLOOD-BRAIN-BARRIER; GROWTH-FACTOR; PROGENITOR CELLS; STEM/PROGENITOR CELLS; ADULT-RATS; INTRACEREBRAL HEMORRHAGE; TREATING STROKE; ISCHEMIC-STROKE;
D O I
10.1161/STROKEAHA.113.001943
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Background and Purpose Despite the reported functional recovery in transplanted stroke models and patients, the mechanism of action underlying stem cell therapy remains not well understood. Here, we examined the role of stem cell-mediated vascular repair in stroke. Methods Adult rats were exposed to transient occlusion of the middle cerebral artery and 3 hours later randomly stereotaxically transplantated with 100K, 200K, or 400K human cerebral endothelial cell 6 viable cells or vehicle. Animals underwent neurological examination and motor test up to day 7 after transplantation then euthanized for immunostaining against neuronal, vascular, and specific human antigens. A parallel in vitro study cocultured rat primary neuronal cells with human cerebral endothelial cell 6 under oxygen-glucose deprivation and treated with vascular endothelial growth factor (VEGF) and anti-VEGF. Results Stroke animals that received vehicle infusion displayed typical occlusion of the middle cerebral artery-induced behavioral impairments that were dose-dependently reduced in transplanted stroke animals at days 3 and 7 after transplantation and accompanied by increased expression of host neuronal and vascular markers adjacent to the transplanted cells. Some transplanted cells showed a microvascular phenotype and juxtaposed to the host vasculature. Infarct volume in transplanted stroke animals was significantly smaller than vehicle-infused stroke animals. Moreover, rat neurons cocultured with human cerebral endothelial cell 6 or treated with VEGF exhibited significantly less oxygen-glucose deprivation-induced cell death that was blocked by anti-VEGF treatment. Conclusions We found attenuation of behavioral and histological deficits coupled with robust vasculogenesis and neurogenesis in endothelial cell-transplanted stroke animals, suggesting that targeting vascular repair sets in motion a regenerative process in experimental stroke possibly via the VEGF pathway.
引用
收藏
页码:3473 / 3481
页数:9
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