Chronic TNFα-driven injury delays cell migration to villi in the intestinal epithelium

Muraro, Daniele, Parker, Aimee, Vaux, Laura, Filipi, Sarah, Ahmet, Axel A, Fletcher, Alexander G, Watson, Alastair JM, Pin, Carmen, Maini, Phillip K and Byrne, Helen M (2018) Chronic TNFα-driven injury delays cell migration to villi in the intestinal epithelium. Journal of The Royal Society Interface, 15 (145). ISSN 1742-5689

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Abstract

The intestinal epithelium is 1 a single layer of cells which provides the rst line of defence of the intestinal mucosa to bacterial infection. Cohesion of this physical barrier is supported by renewal of epithelial stem cells, residing in invaginations called crypts, and by crypt cell migration onto protrusions called villi; dysregulation of such mechanisms may render the gut susceptible to chronic in ammation. The impact that excessive or misplaced epithelial cell death may have on villus cell migration is currently unknown. We integrated cell-tracking methods with computational models to determine how epithelial homeostasis is aected by acute and chronic TNF-driven epithelial cell death. Parameter inference reveals that acute in ammatory cell death has a transient eect on epithelial cell dynamics, whereas cell death caused by chronic elevated TNF causes a delay in the accumulation of labelled cells onto the villus compared to control. Such a delay may be reproduced by using a cell-based model to simulate the dynamics of each cell in a crypt-villus geometry, showing that a prolonged increase in cell death slows the migration of cells from the crypt to the villus. This investigation highlights which injuries (acute or chronic) may be regenerated and which cause disruption of healthy epithelial homeostasis.

Item Type: Article
Faculty \ School: Faculty of Science > School of Biological Sciences
Faculty of Medicine and Health Sciences > Norwich Medical School
Depositing User: LivePure Connector
Date Deposited: 04 Jul 2018 08:30
Last Modified: 22 Apr 2020 06:47
URI: https://ueaeprints.uea.ac.uk/id/eprint/67505
DOI:

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