Polarity reversal of canine intestinal organoids reduces proliferation and increases cell death

Abstract

Apical-out intestinal organoids are a relatively simple method of gaining access to the apical cell surface and have faced increasing scientific interest over the last few years. Apical-out organoids can thus be used for disease modelling to compare differing effects on the basolateral versus the apical cell surface. However, these ‘inside-out’ organoids die relatively quickly and cannot be propagated as long as their basal-out counterparts. Here, we show that apical-out organoids have drastically reduced proliferative potential, as evidenced by immunohistochemical staining and the incorporation of the thymidine analogue EdU. At the same time, cell death levels are increased. Nevertheless, these phenomena cannot be explained by an induction of differentiation, as the gene expression of key marker genes for various cell types does not change over time.

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RIGHTS & PERMISSIONS

2023 2023 The Authors. Cell Proliferation published by Beijing Institute for Stem Cell and Regenerative Medicine and John Wiley & Sons Ltd.