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2017 ; 7
(1
): 11998
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Multiwell capillarity-based microfluidic device for the study of 3D tumour
tissue-2D endothelium interactions and drug screening in co-culture models
#MMPMID28931839
Virumbrales-Muñoz M
; Ayuso JM
; Olave M
; Monge R
; de Miguel D
; Martínez-Lostao L
; Le Gac S
; Doblare M
; Ochoa I
; Fernandez LJ
Sci Rep
2017[Sep]; 7
(1
): 11998
PMID28931839
show ga
The tumour microenvironment is very complex, and essential in tumour development
and drug resistance. The endothelium is critical in the tumour microenvironment:
it provides nutrients and oxygen to the tumour and is essential for systemic drug
delivery. Therefore, we report a simple, user-friendly microfluidic device for
co-culture of a 3D breast tumour model and a 2D endothelium model for cross-talk
and drug delivery studies. First, we demonstrated the endothelium was functional,
whereas the tumour model exhibited in vivo features, e.g., oxygen gradients and
preferential proliferation of cells with better access to nutrients and oxygen.
Next, we observed the endothelium structure lost its integrity in the co-culture.
Following this, we evaluated two drug formulations of TRAIL (TNF-related
apoptosis inducing ligand): soluble and anchored to a LUV (large unilamellar
vesicle). Both diffused through the endothelium, LUV-TRAIL being more efficient
in killing tumour cells, showing no effect on the integrity of endothelium.
Overall, we have developed a simple capillary force-based microfluidic device for
2D and 3D cell co-cultures. Our device allows high-throughput approaches,
patterning different cell types and generating gradients without specialised
equipment. We anticipate this microfluidic device will facilitate drug screening
in a relevant microenvironment thanks to its simple, effective and user-friendly
operation.