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Construction of Blood-brain Barrier in vitro Model Based on Microfluidic Chip |
Li-li JIANG,Jun-song ZHENG,Yan LI,Jun DENG,Li-chao FANG,Hui HUANG() |
Department of Clinical Laboratory Medicine,The First Affiliated Hospital,Third Military Medical University ,Chongqing 400038,China |
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Abstract Objective: To create a blood-brain barrier in vitro model by microfluidic chip technology, which were easy to control and close to microenvironment. Methods: The microfluidic chips were composed of dual pool structure, separated by the polycarbonate membrane, and there were two sets of flow control system, mouse brain vascular endothelial cells and astrocytes were isolated and purified, the cells were identified by immunofluorescence. Then cells were added to the two pools according to the order, and infused at 1μl/min flow rate. The blood-brain barrier(BBB) model was constructed, and then identified and evaluated. Results: Two kinds of cells were obtained by isolation and purification, and the cells were identified by immunofluorescence and the purity was above 95%. After 3 days of co-culture, tight junctions began to develop, and the peak is on the fifth day, the ultrastructural observation showed that the mouse brain vascular endothelial cells formed tight junctions, the penetration experiments of fluorescein sodium and the measurement of TEER showed that barrier formation was good. Conclusion: The blood-brain barrier model was constructed based on the microfluidic chip, It may become a new platform for drug screening, neural system basis and other studies.
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Received: 05 July 2017
Published: 16 December 2017
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