Dynamics and plasticity of stem cells in the regenerating human colonic epithelium
Oost, K. C.; Kahnwald, M.; Barbiero, S.; de Medeiros, G. Q. G.; Suppinger, S.; Kalck, V.; Challet Meylan, L.; Smallwood, S. A.; Stadler, M. B.; Liberali, P.
Show abstract
The human intestinal epithelium is a tissue with rapid turnover. Its complex regenerative process and differentiation trajectories have been challenging to study due to its inaccessibility and lack of temporal sampling. To this end, we developed a workflow to culture adult stem cell-derived human intestinal organoids from single cells to maturation. Extensive characterization of our model system indicated a transient regenerative response, followed by differentiation into all mature cell lineages. This switch is accompanied by a transition between two stem cell states. High-content screening and comparison to in vivo studies revealed that an initial fetal-like state is crucial for achieving successful regeneration, while the subsequent adult-like state is vital for maintaining a balance of cell lineages and continuous support of crypt-morphogenesis. Taken together, this study highlights the extensive plasticity of the intestinal epithelium and paves the way for further studies of human intestinal regeneration and its deregulation in pathologies.
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