Delivery of Small Interfering RNA to Inhibit Vascular Endothelial Growth Factor in Zebrafish Using Natural Brain Endothelia Cell-Secreted Exosome Nanovesicles for the Treatment of Brain Cancer |
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| Authors: | Tianzhi Yang Brittany Fogarty Bret LaForge Salma Aziz Thuy Pham Leanne Lai Shuhua Bai |
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| Affiliation: | 1.Department of Basic Pharmaceutical Sciences, School of Pharmacy,Husson University,Bangor,USA;2.Department of Sociobehavioral and Administrative Pharmacy, College of Pharmacy,Nova Southeastern University,Ft. Lauderdale,USA |
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| Abstract: | ![]()
Although small interfering RNA (siRNA) holds great therapeutic promise, its delivery to the disease site remains a paramount obstacle. In this study, we tested whether brain endothelial cell-derived exosomes could deliver siRNA across the blood–brain barrier (BBB) in zebrafish. Natural exosomes were isolated from brain endothelial bEND.3 cell culture media and vascular endothelial growth factor (VEGF) siRNA was loaded in exosomes with the assistance of a transfection reagent. While fluorescence-activated cell flow cytometry and immunocytochemistry staining studies indicated that wild-type exosomes significantly increased the uptake of fluorescence-labeled siRNA in the autologous brain endothelial cells, decreased fluorescence intensity was observed in the cells treated with the tetraspanin CD63 antibody-blocked exosome-delivered formulation (p?
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