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The canonical Wnt cascade has emerged as a critical regulator of stem cells. In many tissues, activation of Wnt signalling has also been associated with cancer. This has raised the possibility that the tightly regulated self-renewal mediated by Wnt signalling in stem and progenitor cells is subverted in cancer cells to allow malignant proliferation. Insights gained from understanding how ...
Journal: Nature , vol. 434, no. 7035, pp. 843-850, 2005
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Hans Clevers
Journal: Cell , vol. 127, no. 3, pp. 469-480, 2006
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XTcf-3 is a maternally expressed Xenopus homolog of the mammalian HMG box factors Tcf-1 and Lef-1. The N-terminus of XTcf-3 binds to β-catenin. Microinjection of XTcf-3 mRNA in embryos results in nuclear translocation of β-catenin. The β-catenin–XTcf-3 complex activates transcription in a transient reporter gene assay, while XTcf-3 ...
Journal: Cell , vol. 86, no. 3, pp. 391-399, 1996
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Mariann Bienz, Hans Clevers
Journal: Cell , vol. 103, no. 2, pp. 311-320, 2000
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Nick Barker, Johan H. van Es, Jeroen Kuipers, Pekka Kujala, Maaike van den Born, Miranda Cozijnsen, Andrea Haegebarth, Jeroen Korving, Harry Begthel, Peter J. Peters, Hans Clevers
The intestinal epithelium is the most rapidly self-renewing tissue in adult mammals. It is currently believed that four to six crypt stem cells reside at the +4 position immediately above the Paneth cells in the small intestine; colon stem cells remain undefined. Lgr5 (leucine-rich-repeat-containing G-protein-coupled receptor 5, also known as Gpr49) was selected from ...
Journal: Nature , vol. 449, no. 7165, pp. 1003-1007, 2007
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The Wnt signaling pathway, named for its most upstream ligands, the Wnts, is involved in various differentiation events during embryonic development and leads to tumor formation when aberrantly activated. Molecular studies have pinpointed activating mutations of the Wnt signaling pathway as the cause of approximately 90% of colorectal cancer (CRC), and somewhat less frequently in cancers at other sites, such ...
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Mutations of the genes encoding APC or ß-catenin in colon carcinoma induce the constitutive formation of nuclear ß-catenin/Tcf-4 complexes, resulting in activated transcription of Tcf target genes. To study the physiological role of Tcf-4 (which is encoded by the Tcf7l2 gene), we disrupted Tcf7l2 by homologous recombination. Tcf7l2 -/-mice die shortly after birth. A single ...
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Marc van de Wetering, Robert Cavallo, Dennis Dooijes, Moniek van Beest, Johan van Es, Joseph Loureiro, Arne Ypma, Deborah Hursh, Tamara Jones, Amy Bejsovec, Mark Peifer, Mark MortinHans Clevershttp://academic.research.microsoft.com/io.ashx?type=5&id=2741291&selfId1=3032394&selfId2=-1&maxNumber=12&query=
The vertebrate transcription factors TCF (T cell factor) and LEF (lymphocyte enhancer binding factor) interact with β-catenin and are hypothesized to mediate Wingless/Wnt signaling. We have cloned a maternally expressed Drosophila TCF family member, dTCF. dTCF binds a canonical TCF DNA motif and interacts with the β-catenin homolog Armadillo. Previous studies have identified two regions in Armadillo ...
Journal: Cell , vol. 88, no. 6, pp. 789-799, 1997
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Marc van de Wetering, Elena Sancho, Cornelis Verweij, Wim de Lau, Irma Oving, Adam Hurlstone, Karin van der Horn, Eduard Batlle, Damien Coudreuse, Anna-Pavlina Haramis, Menno Tjon-Pon-Fong, Petra MoererHans Clevershttp://academic.research.microsoft.com/io.ashx?type=5&id=3864743&selfId1=3032394&selfId2=-1&maxNumber=12&query=
The transactivation of TCF target genes induced by Wnt pathway mutations constitutes the primary transforming event in colorectal cancer (CRC). We show that disruption of β-catenin/TCF-4 activity in CRC cells induces a rapid G1 arrest and blocks a genetic program that is physiologically active in the proliferative compartment of colon crypts. Coincidently, an intestinal differentiation program is ...
Journal: Cell , vol. 111, no. 2, pp. 241-250, 2002
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Colorectal cancer arises through a gradual series of histological changes, each of which is accompanied by a specific genetic alteration. In general, an intestinal cell needs to comply with two essential requirements to develop into a cancer: it must acquire selective advantage to allow for the initial clonal expansion, and genetic instability to allow for multiple hits in other genes ...
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Jeroen Kuipers, Carla Rosenberg, Ron Smits, Menno Kielman, Claudia Gaspar, Johan H. van Es, Cor Breukel, Joop Wiegant, Rachel H. Giles, Riccardo Fodde, Hans Clevers
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In the small intestine, the progeny of stem cells migrate in precise patterns. Absorptive, enteroendocrine, and goblet cells migrate toward the villus while Paneth cells occupy the bottom of the crypts. We show here that β-catenin and TCF inversely control the expression of the EphB2/EphB3 receptors and their ligand ephrin-B1 in colorectal cancer and along the crypt-...
Journal: Cell , vol. 111, no. 2, pp. 251-263, 2002
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Freddy Radtke, Hans Clevers
The intestinal epithelium follows the paradigms of stem cell biology established for other self-renewing tissues. With a unique topology, it constitutes a two-dimensional structure folded into valleys and hills: the proliferative crypts and the differentiated villi. Its unprecedented self-renewal rate appears reflected in a high susceptibility to malignant transformation. The molecular mechanisms that control homeostatic self-renewal ...
Journal: Science , vol. 307, no. 5717, pp. 1904-1909, 2005
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We have designed a doxycycline-regulated form of the H1 promoter of RNA polymerase III that allows the inducible knockdown of gene expression by small interfering RNAs (siRNAs). As a proof-of-principle, we have targeted β-catenin in colorectal cancer (CRC) cells. T-cell factor (TCF) target-gene expression is induced by accumulated β-catenin, and is the main ...
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Donald A. Glass, Peter Bialek, Jong Deok Ahn, Michael Starbuck, Millan S. Patel, Hans Clevers, Mark M. Taketo, Fanxin Long, Andrew P. McMahon, Richard A. Lang, Gerard Karsenty
Inactivation of beta-catenin in mesenchymal progenitors prevents osteoblast differentiation; inactivation of Lrp5, a gene encoding a likely Wnt coreceptor, results in low bone mass (osteopenia) by decreasing bone formation. These observations indicate that Wnt signaling controls osteoblast differentiation and suggest that it may regulate bone formation in differentiated osteoblasts. Here, we study later events and find that stabilization of ...
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Johan H. van Es, Marielle E. van Gijn, Orbicia Riccio, Maaike van den Born, Marc Vooijs, Harry Begthel, Miranda Cozijnsen, Sylvie Robine, Doug J. Winton, Freddy Radtke, Hans Clevers
Journal: Nature , vol. 435, no. 7044, pp. 959-963, 2005
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Two candidate genes for controlling thymocyte differentiation,T-cellfactor-1 (Tcf-1) and lymphoid enhancer-binding factor (Lef-1), encode closely related DNA-binding HMG-box proteins1,2. Their expression pattern is complex and largely overlapping during embryogenesis, yet restricted to lymphocytes postnatally3. Here we generate two independent germline mutations in Tcf-1 and find that thymocyte development in (otherwise ...
Journal: Nature , vol. 374, no. 6517, pp. 70-74, 1995
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Hans Clevers
Chronic inflammation and cancer are closely associated in the intestine. Anti-inflammatory medication reduces intestinal neoplasia, while colorectal cancer incidence is increased in ulcerative colitis. Cyclooxygenases are key to both diseases, yet the molecular basis of the association remains incompletely understood. Two recent Cell(Greten et al., 2004; Rakoff-Nahoum et al., 2004) papers illuminate roles of Toll-like receptors ...
Journal: Cell , vol. 118, no. 6, pp. 671-674, 2004
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Intestinal cancer is initiated by Wnt-pathway-activating mutations in genes such as adenomatous polyposis coli (APC). As in most cancers, the cell of origin has remained elusive. In a previously established Lgr5 (leucine-rich-repeat containing G-protein-coupled receptor 5) knockin mouse model, a tamoxifen-inducible Cre recombinase is expressed in long-lived intestinal stem cells. Here we ...
Journal: Nature , vol. 457, no. 7229, pp. 608-611, 2009
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Marco W. Schilham, Mariëtte A. Oosterwegel, Petra Moerer, Jing Ya, Piet A. J. de Boer, Marc van de Wetering, Sjef Verbeek, Wouter H. Lamers, Ada M. Kruisbeek, Ana Cumano, Hans Clevers
A STRIKING example of the relationship between regulation of transcription and phenotype is the central role of the Y-chromo-somal gene Sry in mammalian sex determination1,2. Sry is the founding member of a large family of so-called Sox genes1,3. During murine embryogenesis, the transcriptional activator Sox-4 is expressed at several sites, but in adult mice ...
Journal: Nature , vol. 380, no. 6576, pp. 711-714, 1996
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The LKB1 gene encodes a serine/threonine kinase that is mutated in the Peutz-Jeghers cancer syndrome. LKB1 is homologous to the Par-4 polarity genes in C. elegans and D. melanogaster. We have previously reported the identification and characterization of an LKB1-specific adaptor protein, STRAD, which activates LKB1 and translocates it from nucleus to cytoplasm. We have now ...
Journal: Cell , vol. 116, no. 3, pp. 457-466, 2004
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Journal: Science , vol. 303, no. 5664, pp. 1684-1686, 2004