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Issue 18, 2020
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Neutrophilic infiltration in organ-on-a-chip model of tissue inflammation

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The multiphasic etiology of tissue inflammation and the fundamental immunological differences between species render inflammatory pathologies difficult to recapitulate in animal models, and account for the paucity of therapies that are successfully translated from rodents to humans. Here, we present a human-relevant organ-on-a-chip platform for experimental inflammatory diseases. We created an immunocompetent in vitro gut model by incorporating intestinal epithelial and immune cells into microfluidic chambers that permit cell movement across an extracellular matrix (ECM) and fluidic channels. This is the first model that integrates a mucosal barrier, a three-dimensional ECM, resident and infiltrating immune cells, and simulates a functional crosstalk that ultimately triggers cellular processes representative of inflammation. Under homeostatic conditions, enterocytes form a tight epithelium and subepithelial macrophages are non-activated. Introduction of pro-inflammatory mediators triggers macrophage activation and inflammation-induced intestinal barrier leakiness. Neutrophils in a parallel, matrix-separated non-epithelial channel are attracted by such a pro-inflammatory microenvironment and migrate through the extracellular matrix, further exacerbating tissue inflammation and damage. With this model, we provide the foundations to recapitulate and investigate the onset of tissue inflammation in a controlled, human-relevant system.

Graphical abstract: Neutrophilic infiltration in organ-on-a-chip model of tissue inflammation

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Article information

23 Apr 2020
30 Jul 2020
First published
06 Aug 2020

Lab Chip, 2020,20, 3365-3374
Article type

Neutrophilic infiltration in organ-on-a-chip model of tissue inflammation

N. Gjorevski, B. Avignon, R. Gérard, L. Cabon, A. B. Roth, M. Bscheider and A. Moisan, Lab Chip, 2020, 20, 3365
DOI: 10.1039/D0LC00417K

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