1. A Novel Organoid Model of Damage and Repair Identifies HNF4α as a Critical Regulator of Intestinal Epithelial RegenerationSummary
- Author
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Sander Meisner, Agnès Ribeiro, Vanesa Muncan, Manon E. Wildenberg, Jarom Heijmans, Christine Jones, Jan Koster, Gijs R. van den Brink, Jacqueline L.M. Vermeulen, Jonathan H. M. van der Meer, François Boudreau, Paula S. Montenegro-Miranda, Gastroenterology and Hepatology, Graduate School, Tytgat Institute for Liver and Intestinal Research, AGEM - Digestive immunity, AGEM - Re-generation and cancer of the digestive system, AGEM - Amsterdam Gastroenterology Endocrinology Metabolism, Oncogenomics, and General Internal Medicine
- Subjects
0301 basic medicine ,Male ,qRT-PCR, quantitative reverse transcription polymerase chain reaction ,Primary Cell Culture ,Regulator ,EdU, 5-ethynyl-2’-deoxyuridine ,PBS, phosphate-buffered saline ,Transcript profiling ,Biology ,Lgr5, leucine-rich repeat-containing G-protein–coupled receptor 5 ,HNF4α, hepatocyte nuclear factor 4α ,BrdU, bromodeoxyuridine ,03 medical and health sciences ,Mice ,0302 clinical medicine ,Intestine, Small ,Organoid ,Animals ,Regeneration ,Olfm4, olfactomedin 4 ,Intestinal Mucosa ,lcsh:RC799-869 ,Cells, Cultured ,Original Research ,Epithelial barrier ,Mice, Knockout ,Hepatology ,Regeneration (biology) ,Gastroenterology ,Intestinal organoids ,IPA, ingenuity pathway analysis ,ENR, epidermal growth factor, Noggin, and R-spondin ,Cell biology ,Organoids ,Hepatocyte nuclear factors ,Radiation Injuries, Experimental ,030104 developmental biology ,Hepatocyte Nuclear Factor 4 ,030211 gastroenterology & hepatology ,TUNEL, terminal deoxynucleotidyl transferase–mediated deoxyuridine triphosphate nick-end labeling ,Irradiation ,lcsh:Diseases of the digestive system. Gastroenterology - Abstract
Background & Aims Recent evidence has suggested that the intact intestinal epithelial barrier protects our body from a range of immune-mediated diseases. The epithelial layer has an impressive ability to reconstitute and repair upon damage and this process of repair increasingly is seen as a therapeutic target. In vitro models to study this process in primary intestinal cells are lacking. Methods We established and characterized an in vitro model of intestinal damage and repair by applying γ-radiation on small-intestinal organoids. We then used this model to identify novel regulators of intestinal regeneration. Results We identified hepatocyte nuclear factor 4α (HNF4α) as a pivotal upstream regulator of the intestinal regenerative response. Organoids lacking Hnf4a were not able to propagate in vitro. Importantly, intestinal Hnf4a knock-out mice showed impaired regeneration after whole-body irradiation, confirming intestinal organoids as a valuable alternative to in vivo studies. Conclusions In conclusion, we established and validated an in vitro damage–repair model and identified HNF4α as a crucial regulator of intestinal regeneration. Transcript profiling: GSE141515 and GSE141518., Graphical abstract
- Published
- 2020