PMID- 26503053 OWN - NLM STAT- MEDLINE DCOM- 20160426 LR - 20220330 IS - 1476-4687 (Electronic) IS - 0028-0836 (Linking) VI - 526 IP - 7575 DP - 2015 Oct 29 TI - Yap-dependent reprogramming of Lgr5(+) stem cells drives intestinal regeneration and cancer. PG - 715-8 LID - 10.1038/nature15382 [doi] AB - The gut epithelium has remarkable self-renewal capacity that under homeostatic conditions is driven by Wnt signalling in Lgr5(+) intestinal stem cells (ISCs). However, the mechanisms underlying ISC regeneration after injury remain poorly understood. The Hippo signalling pathway mediates tissue growth and is important for regeneration. Here we demonstrate in mice that Yap, a downstream transcriptional effector of Hippo, is critical for recovery of intestinal epithelium after exposure to ionizing radiation. Yap transiently reprograms Lgr5(+) ISCs by suppressing Wnt signalling and excessive Paneth cell differentiation, while promoting cell survival and inducing a regenerative program that includes Egf pathway activation. Accordingly, growth of Yap-deficient organoids is rescued by the Egfr ligand epiregulin, and we find that non-cell-autonomous production of stromal epiregulin may compensate for Yap loss in vivo. Consistent with key roles for regenerative signalling in tumorigenesis, we further demonstrate that Yap inactivation abolishes adenomas in the Apc(Min) mouse model of colon cancer, and that Yap-driven expansion of Apc(-/-) organoids requires the Egfr module of the Yap regenerative program. Finally, we show that in vivo Yap is required for progression of early Apc mutant tumour-initiating cells, suppresses their differentiation into Paneth cells, and induces a regenerative program and Egfr signalling. Our studies reveal that upon tissue injury, Yap reprograms Lgr5(+) ISCs by inhibiting the Wnt homeostatic program, while inducing a regenerative program that includes activation of Egfr signalling. Moreover, our findings reveal a key role for the Yap regenerative pathway in driving cancer initiation. FAU - Gregorieff, Alex AU - Gregorieff A AD - Centre for Systems Biology, Lunenfeld Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario M5G 1X5, Canada. FAU - Liu, Yu AU - Liu Y AD - Centre for Systems Biology, Lunenfeld Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario M5G 1X5, Canada. AD - Department of Molecular Genetics, University of Toronto, Ontario M5S 1A8, Canada. FAU - Inanlou, Mohammad R AU - Inanlou MR AD - Centre for Systems Biology, Lunenfeld Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario M5G 1X5, Canada. FAU - Khomchuk, Yuliya AU - Khomchuk Y AD - Centre for Systems Biology, Lunenfeld Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario M5G 1X5, Canada. FAU - Wrana, Jeffrey L AU - Wrana JL AD - Centre for Systems Biology, Lunenfeld Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario M5G 1X5, Canada. AD - Department of Molecular Genetics, University of Toronto, Ontario M5S 1A8, Canada. LA - eng SI - GEO/GSE66567 GR - MOP-106672/Canadian Institutes of Health Research/Canada GR - MOP-12860/Canadian Institutes of Health Research/Canada PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20151021 PL - England TA - Nature JT - Nature JID - 0410462 RN - 0 (Adaptor Proteins, Signal Transducing) RN - 0 (Cell Cycle Proteins) RN - 0 (Epiregulin) RN - 0 (Ereg protein, mouse) RN - 0 (Lgr5 protein, mouse) RN - 0 (Phosphoproteins) RN - 0 (Receptors, G-Protein-Coupled) RN - 0 (YAP-Signaling Proteins) RN - 0 (Yap1 protein, mouse) RN - EC 2.7.10.1 (EGFR protein, mouse) RN - EC 2.7.10.1 (ErbB Receptors) RN - EC 2.7.11.1 (Protein Serine-Threonine Kinases) SB - IM MH - Adaptor Proteins, Signal Transducing/deficiency/*metabolism MH - Adenoma/metabolism/pathology MH - Animals MH - Cell Cycle Proteins MH - *Cell Differentiation/radiation effects MH - Cell Survival/radiation effects MH - Cell Transformation, Neoplastic MH - Colonic Neoplasms/metabolism/*pathology MH - Disease Models, Animal MH - Epiregulin/metabolism MH - ErbB Receptors/metabolism MH - Female MH - Hippo Signaling Pathway MH - Homeostasis/radiation effects MH - Intestinal Mucosa/metabolism MH - Intestines/*cytology/radiation effects MH - Male MH - Mice MH - Neoplastic Stem Cells/cytology/metabolism/pathology MH - Organoids/metabolism MH - Paneth Cells/cytology/radiation effects MH - Phosphoproteins/deficiency/*metabolism MH - Protein Serine-Threonine Kinases/metabolism MH - Radiation, Ionizing MH - Receptors, G-Protein-Coupled/*metabolism MH - *Regeneration/radiation effects MH - Stem Cells/cytology/*metabolism/radiation effects MH - Wnt Signaling Pathway MH - YAP-Signaling Proteins EDAT- 2015/10/28 06:00 MHDA- 2016/04/27 06:00 CRDT- 2015/10/28 06:00 PHST- 2014/05/14 00:00 [received] PHST- 2015/08/07 00:00 [accepted] PHST- 2015/10/28 06:00 [entrez] PHST- 2015/10/28 06:00 [pubmed] PHST- 2016/04/27 06:00 [medline] AID - nature15382 [pii] AID - 10.1038/nature15382 [doi] PST - ppublish SO - Nature. 2015 Oct 29;526(7575):715-8. doi: 10.1038/nature15382. Epub 2015 Oct 21.