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2015 ; 10
(9
): e0137301
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Microcirculation-on-a-Chip: A Microfluidic Platform for Assaying Blood- and
Lymphatic-Vessel Permeability
#MMPMID26332321
Sato M
; Sasaki N
; Ato M
; Hirakawa S
; Sato K
; Sato K
PLoS One
2015[]; 10
(9
): e0137301
PMID26332321
show ga
We developed a microfluidic model of microcirculation containing both blood and
lymphatic vessels for examining vascular permeability. The designed microfluidic
device harbors upper and lower channels that are partly aligned and are separated
by a porous membrane, and on this membrane, blood vascular endothelial cells
(BECs) and lymphatic endothelial cells (LECs) were cocultured back-to-back. At
cell-cell junctions of both BECs and LECs, claudin-5 and VE-cadherin were
detected. The permeability coefficient measured here was lower than the value
reported for isolated mammalian venules. Moreover, our results showed that the
flow culture established in the device promoted the formation of endothelial
cell-cell junctions, and that treatment with histamine, an inflammation-promoting
substance, induced changes in the localization of tight and adherens
junction-associated proteins and an increase in vascular permeability in the
microdevice. These findings indicated that both BECs and LECs appeared to retain
their functions in the microfluidic coculture platform. Using this
microcirculation device, the vascular damage induced by habu snake venom was
successfully assayed, and the assay time was reduced from 24 h to 30 min. This is
the first report of a microcirculation model in which BECs and LECs were
cocultured. Because the micromodel includes lymphatic vessels in addition to
blood vessels, the model can be used to evaluate both vascular permeability and
lymphatic return rate.