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2016 ; 6
(ä): 31771
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Development of a Functional Glomerulus at the Organ Level on a Chip to Mimic
Hypertensive Nephropathy
#MMPMID27558173
Zhou M
; Zhang X
; Wen X
; Wu T
; Wang W
; Yang M
; Wang J
; Fang M
; Lin B
; Lin H
Sci Rep
2016[Aug]; 6
(ä): 31771
PMID27558173
show ga
Glomerular hypertension is an important factor exacerbating glomerular diseases
to end-stage renal diseases because, ultimately, it results in glomerular
sclerosis (especially in hypertensive and diabetic nephropathy). The precise
mechanism of glomerular sclerosis caused by glomerular hypertension is unclear,
due partly to the absence of suitable in vitro or in vivo models capable of
mimicking and regulating the complex mechanical forces and/or organ-level disease
processes. We developed a "glomerulus-on-a-chip" (GC) microfluidic device. This
device reconstitutes the glomerulus with organ-level glomerular functions to
create a disease model-on-a chip that mimics hypertensive nephropathy in humans.
It comprises two channels lined by closely opposed layers of glomerular
endothelial cells and podocytes that experience fluid flow of physiological
conditions to mimic the glomerular microenvironment in vivo. Our results revealed
that glomerular mechanical forces have a crucial role in cellular cytoskeletal
rearrangement as well as the damage to cells and their junctions that leads to
increased glomerular leakage observed in hypertensive nephropathy. Results also
showed that the GC could readily and flexibly meet the demands of a renal-disease
model. The GC could provide drug screening and toxicology testing, and create
potential new personalized and accurate therapeutic platforms for glomerular
disease.