PMID- 19251639 OWN - NLM STAT- MEDLINE DCOM- 20090512 LR - 20211020 IS - 1091-6490 (Electronic) IS - 0027-8424 (Print) IS - 0027-8424 (Linking) VI - 106 IP - 15 DP - 2009 Apr 14 TI - Notch and Wnt signals cooperatively control cell proliferation and tumorigenesis in the intestine. PG - 6309-14 LID - 10.1073/pnas.0900427106 [doi] AB - Notch and Wnt signals play essential roles in intestinal development and homeostasis, yet how they integrate their action to affect intestinal morphogenesis is not understood. We examined the interplay between these two signaling pathways in vivo, by modulating Notch activity in mice carrying either a loss- or a gain-of-function mutation of Wnt signaling. We find that the dramatic proliferative effect that Notch signals have on early intestinal precursors requires normal Wnt signaling, whereas its influence on intestinal differentiation appears independent of Wnt. Analogous experiments in Drosophila demonstrate that the synergistic effects of Notch and Wnt are valid across species. We also demonstrate a striking synergy between Notch and Wnt signals that results in inducing the formation of intestinal adenomas, particularly in the colon, a region rarely affected in available mouse tumor models, but the primary target organ in human patients. These studies thus reveal a previously unknown oncogenic potential of Notch signaling in colorectal tumorigenesis that, significantly, is supported by the analysis of human tumors. Importantly, our experimental evidence raises the possibility that Notch activation might be an essential initial event triggering colorectal cancer. FAU - Fre, Silvia AU - Fre S AD - Morphogenesis and Intracellular Signaling, Institut Curie-Unite Mixte de Recherche 144 Centre National de la Recherche Scientifique, 75248 Paris Cedex 05, France. FAU - Pallavi, S K AU - Pallavi SK FAU - Huyghe, Mathilde AU - Huyghe M FAU - Lae, Marick AU - Lae M FAU - Janssen, Klaus-Peter AU - Janssen KP FAU - Robine, Sylvie AU - Robine S FAU - Artavanis-Tsakonas, Spyros AU - Artavanis-Tsakonas S FAU - Louvard, Daniel AU - Louvard D LA - eng GR - CA098402/CA/NCI NIH HHS/United States GR - R37 NS026084/NS/NINDS NIH HHS/United States GR - R01 NS026084/NS/NINDS NIH HHS/United States GR - R01 CA098402/CA/NCI NIH HHS/United States GR - NS26084/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20090227 PL - United States TA - Proc Natl Acad Sci U S A JT - Proceedings of the National Academy of Sciences of the United States of America JID - 7505876 RN - 0 (Basic Helix-Loop-Helix Leucine Zipper Transcription Factors) RN - 0 (Drosophila Proteins) RN - 0 (Nerve Tissue Proteins) RN - 0 (Receptors, Notch) RN - 0 (TCF Transcription Factors) RN - 0 (Tcf4 protein, mouse) RN - 0 (Transcription Factor 4) RN - 0 (Wnt Proteins) RN - 0 (Wnt1 Protein) RN - 0 (wg protein, Drosophila) SB - IM MH - Adenoma/genetics/metabolism/pathology MH - Animals MH - Basic Helix-Loop-Helix Leucine Zipper Transcription Factors MH - Cell Differentiation MH - Cell Proliferation MH - Cell Transformation, Neoplastic/genetics/*metabolism/*pathology MH - Drosophila Proteins/genetics/metabolism MH - Drosophila melanogaster MH - Humans MH - Intestinal Neoplasms/genetics/*metabolism/*pathology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Nerve Tissue Proteins/deficiency/genetics/metabolism MH - Receptors, Notch/genetics/*metabolism MH - *Signal Transduction MH - Survival Rate MH - TCF Transcription Factors/deficiency/genetics/metabolism MH - Transcription Factor 4 MH - Wnt Proteins/*metabolism MH - Wnt1 Protein/genetics/metabolism PMC - PMC2649205 COIS- The authors declare no conflict of interest. EDAT- 2009/03/03 09:00 MHDA- 2009/05/13 09:00 PMCR- 2009/02/27 CRDT- 2009/03/03 09:00 PHST- 2009/03/03 09:00 [entrez] PHST- 2009/03/03 09:00 [pubmed] PHST- 2009/05/13 09:00 [medline] PHST- 2009/02/27 00:00 [pmc-release] AID - 0900427106 [pii] AID - 7065 [pii] AID - 10.1073/pnas.0900427106 [doi] PST - ppublish SO - Proc Natl Acad Sci U S A. 2009 Apr 14;106(15):6309-14. doi: 10.1073/pnas.0900427106. Epub 2009 Feb 27.