Minimal homozygous endothelial deletion of Eng with VEGF stimulation is sufficient to cause cerebrovascular dysplasia in the adult mouse.

Cerebrovascular Diseases
Eun-Jung ChoiHua Su

Abstract

Brain arteriovenous malformations (bAVMs) represent a high risk for hemorrhagic stroke, leading to significant neurological morbidity and mortality in young adults. The etiopathogenesis of bAVM remains unclear. Research progress has been hampered by the lack of animal models. Hereditary Hemorrhagic Telangiectasia (HHT) patients with haploinsufficiency of endoglin (ENG, HHT1) or activin receptor-like kinase 1 (ALK1, HHT2) have a higher incidence of bAVM than the general population. We previously induced cerebrovascular dysplasia in the adult mouse that resembles human bAVM through Alk1 deletion plus vascular endothelial growth factor (VEGF) stimulation. We hypothesized that Eng deletion plus VEGF stimulation would induce a similar degree of cerebrovascular dysplasia as the Alk1-deleted brain. Ad-Cre (an adenoviral vector expressing Cre recombinase) and AAV-VEGF (an adeno-associated viral vector expressing VEGF) were co-injected into the basal ganglia of 8- to 10-week-old Eng(2f/2f) (exons 5 and 6 flanked by loxP sequences), Alk1(2f/2f) (exons 4-6 flanked by loxP sequences) and wild-type (WT) mice. Vascular density, dysplasia index, and gene deletion efficiency were analyzed 8 weeks later. AAV-VEGF induced a similar degree of ang...Continue Reading

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Citations

Oct 1, 2013·Cellular and Molecular Life Sciences : CMLS·Deepak AtriMichael Simons
Apr 12, 2014·Translational Stroke Research·Wanqiu ChenHua Su
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Aug 28, 2021·International Journal of Molecular Sciences·Georgios GalarisFranck Lebrin

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