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Tripartite interactions between Wnt signaling, Notch and Myb for stem/progenitor cell functions during intestinal tumorigenesis.

Identifieur interne : 003092 ( PubMed/Checkpoint ); précédent : 003091; suivant : 003093

Tripartite interactions between Wnt signaling, Notch and Myb for stem/progenitor cell functions during intestinal tumorigenesis.

Auteurs : Markus Germann [Australie] ; Huiling Xu [Australie] ; Jordane Malaterre [Australie] ; Shienny Sampurno [Australie] ; Mathilde Huyghe [France] ; Dane Cheasley [Australie] ; Silvia Fre [France] ; Robert G. Ramsay [Australie]

Source :

RBID : pubmed:25290188

Descripteurs français

English descriptors

Abstract

Deletion studies confirm Wnt, Notch and Myb transcriptional pathway engagement in intestinal tumorigenesis. Nevertheless, their contrasting and combined roles when activated have not been elucidated. This is important as these pathways are not ablated but rather are aberrantly activated during carcinogenesis. Using ApcMin/+ mice as a source of organoids we documented their transition, on a clone-by-clone basis, to cyst-like spheres with constitutively activated Wnt pathway, increased self-renewal and growth and reduced differentiation. We then looked at this transition when Myb and/or Notch1 are activated. Activated Notch promoted cyst-like organoids. Conversely growth and propagation of cyst-like, but not normal organoids were Notch-independent. Activated Myb promoted normal, but not cyst-like organoids. Interestingly the Wnt, Notch and Myb pathways were all involved in regulating the expression of the intestinal stem cell (ISC) gene Lgr5 in organoids, while ISC gene and Notch target Olfm4 was dominantly repressed by Wnt. These findings parallel mouse intestinal adenoma formation where Notch promoted the initiation, but not growth, of Wnt-driven Olfm4-repressed colon tumors. Also Myb was essential for colon tumor initiation and collateral mouse pathologies. These data reveal the complex interplay and hierarchy of transcriptional networks that operate in ISCs and uncover a shift in pathway-dependencies during tumor initiation.

DOI: 10.1016/j.scr.2014.08.002
PubMed: 25290188


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<term>Adenoma (metabolism)</term>
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<term>Adenoma (pathology)</term>
<term>Animals</term>
<term>Carcinogenesis</term>
<term>Cell Differentiation</term>
<term>Cell Proliferation</term>
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<term>Receptors, Notch (metabolism)</term>
<term>Signal Transduction</term>
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<term>Animaux</term>
<term>Carcinogenèse</term>
<term>Cellules cultivées</term>
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<term>Cellules souches (métabolisme)</term>
<term>Différenciation cellulaire</term>
<term>Estimation de Kaplan-Meier</term>
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<term>Intestins (métabolisme)</term>
<term>Organoïdes (cytologie)</term>
<term>Organoïdes (métabolisme)</term>
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<term>Protéines proto-oncogènes c-myb (métabolisme)</term>
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<term>Récepteurs Notch (métabolisme)</term>
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<term>Nerve Tissue Proteins</term>
<term>Proto-Oncogene Proteins c-myb</term>
<term>Receptors, G-Protein-Coupled</term>
<term>Receptors, Notch</term>
<term>Wnt Proteins</term>
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<term>Adénomes</term>
</keywords>
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<term>Cellules souches</term>
<term>Intestins</term>
<term>Organoïdes</term>
</keywords>
<keywords scheme="MESH" qualifier="cytology" xml:lang="en">
<term>Intestines</term>
<term>Organoids</term>
<term>Stem Cells</term>
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<term>Récepteurs Notch</term>
<term>Récepteurs couplés aux protéines G</term>
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<term>Adenoma</term>
<term>Intestines</term>
<term>Organoids</term>
<term>Stem Cells</term>
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<term>Adenoma</term>
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<term>Adénomes</term>
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<term>Adénomes</term>
<term>Cellules souches</term>
<term>Intestins</term>
<term>Organoïdes</term>
<term>Protéines de tissu nerveux</term>
<term>Protéines de type Wingless</term>
<term>Protéines proto-oncogènes c-myb</term>
<term>Récepteurs Notch</term>
<term>Récepteurs couplés aux protéines G</term>
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<term>Adenoma</term>
</keywords>
<keywords scheme="MESH" xml:lang="en">
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<term>Carcinogenesis</term>
<term>Cell Differentiation</term>
<term>Cell Proliferation</term>
<term>Cells, Cultured</term>
<term>Kaplan-Meier Estimate</term>
<term>Mice</term>
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<term>Mice, Knockout</term>
<term>Signal Transduction</term>
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<term>Carcinogenèse</term>
<term>Cellules cultivées</term>
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<term>Estimation de Kaplan-Meier</term>
<term>Prolifération cellulaire</term>
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<div type="abstract" xml:lang="en">Deletion studies confirm Wnt, Notch and Myb transcriptional pathway engagement in intestinal tumorigenesis. Nevertheless, their contrasting and combined roles when activated have not been elucidated. This is important as these pathways are not ablated but rather are aberrantly activated during carcinogenesis. Using ApcMin/+ mice as a source of organoids we documented their transition, on a clone-by-clone basis, to cyst-like spheres with constitutively activated Wnt pathway, increased self-renewal and growth and reduced differentiation. We then looked at this transition when Myb and/or Notch1 are activated. Activated Notch promoted cyst-like organoids. Conversely growth and propagation of cyst-like, but not normal organoids were Notch-independent. Activated Myb promoted normal, but not cyst-like organoids. Interestingly the Wnt, Notch and Myb pathways were all involved in regulating the expression of the intestinal stem cell (ISC) gene Lgr5 in organoids, while ISC gene and Notch target Olfm4 was dominantly repressed by Wnt. These findings parallel mouse intestinal adenoma formation where Notch promoted the initiation, but not growth, of Wnt-driven Olfm4-repressed colon tumors. Also Myb was essential for colon tumor initiation and collateral mouse pathologies. These data reveal the complex interplay and hierarchy of transcriptional networks that operate in ISCs and uncover a shift in pathway-dependencies during tumor initiation.</div>
</front>
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<Title>Stem cell research</Title>
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<ArticleTitle>Tripartite interactions between Wnt signaling, Notch and Myb for stem/progenitor cell functions during intestinal tumorigenesis.</ArticleTitle>
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<AbstractText>Deletion studies confirm Wnt, Notch and Myb transcriptional pathway engagement in intestinal tumorigenesis. Nevertheless, their contrasting and combined roles when activated have not been elucidated. This is important as these pathways are not ablated but rather are aberrantly activated during carcinogenesis. Using ApcMin/+ mice as a source of organoids we documented their transition, on a clone-by-clone basis, to cyst-like spheres with constitutively activated Wnt pathway, increased self-renewal and growth and reduced differentiation. We then looked at this transition when Myb and/or Notch1 are activated. Activated Notch promoted cyst-like organoids. Conversely growth and propagation of cyst-like, but not normal organoids were Notch-independent. Activated Myb promoted normal, but not cyst-like organoids. Interestingly the Wnt, Notch and Myb pathways were all involved in regulating the expression of the intestinal stem cell (ISC) gene Lgr5 in organoids, while ISC gene and Notch target Olfm4 was dominantly repressed by Wnt. These findings parallel mouse intestinal adenoma formation where Notch promoted the initiation, but not growth, of Wnt-driven Olfm4-repressed colon tumors. Also Myb was essential for colon tumor initiation and collateral mouse pathologies. These data reveal the complex interplay and hierarchy of transcriptional networks that operate in ISCs and uncover a shift in pathway-dependencies during tumor initiation.</AbstractText>
<CopyrightInformation>Copyright © 2014 The Authors. Published by Elsevier B.V. All rights reserved.</CopyrightInformation>
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<Affiliation>Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia; Sir Peter MacCallum Cancer Department of Oncology, University of Melbourne, Australia.</Affiliation>
</AffiliationInfo>
</Author>
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<LastName>Huyghe</LastName>
<ForeName>Mathilde</ForeName>
<Initials>M</Initials>
<AffiliationInfo>
<Affiliation>Institut Curie, Centre de Recherche, Paris 75248, Cedex 05, France.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y">
<LastName>Cheasley</LastName>
<ForeName>Dane</ForeName>
<Initials>D</Initials>
<AffiliationInfo>
<Affiliation>Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia; Sir Peter MacCallum Cancer Department of Oncology, University of Melbourne, Australia.</Affiliation>
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<LastName>Fre</LastName>
<ForeName>Silvia</ForeName>
<Initials>S</Initials>
<AffiliationInfo>
<Affiliation>Institut Curie, Centre de Recherche, Paris 75248, Cedex 05, France.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y">
<LastName>Ramsay</LastName>
<ForeName>Robert G</ForeName>
<Initials>RG</Initials>
<AffiliationInfo>
<Affiliation>Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia; Sir Peter MacCallum Cancer Department of Oncology, University of Melbourne, Australia; Department of Pathology, The University of Melbourne, Australia. Electronic address: rob.ramsay@petermac.org.</Affiliation>
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<Month>09</Month>
<Day>28</Day>
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<Country>England</Country>
<MedlineTA>Stem Cell Res</MedlineTA>
<NlmUniqueID>101316957</NlmUniqueID>
<ISSNLinking>1873-5061</ISSNLinking>
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<NameOfSubstance UI="C493597">Lgr5 protein, mouse</NameOfSubstance>
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<Chemical>
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<NameOfSubstance UI="D020598">Proto-Oncogene Proteins c-myb</NameOfSubstance>
</Chemical>
<Chemical>
<RegistryNumber>0</RegistryNumber>
<NameOfSubstance UI="D043562">Receptors, G-Protein-Coupled</NameOfSubstance>
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<Chemical>
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<NameOfSubstance UI="D051880">Receptors, Notch</NameOfSubstance>
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<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
<QualifierName UI="Q000401" MajorTopicYN="N">mortality</QualifierName>
<QualifierName UI="Q000473" MajorTopicYN="N">pathology</QualifierName>
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<MeshHeading>
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<MeshHeading>
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<MeshHeading>
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<MeshHeading>
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<MeshHeading>
<DescriptorName UI="D007422" MajorTopicYN="N">Intestines</DescriptorName>
<QualifierName UI="Q000166" MajorTopicYN="N">cytology</QualifierName>
<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D053208" MajorTopicYN="N">Kaplan-Meier Estimate</DescriptorName>
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<MeshHeading>
<DescriptorName UI="D051379" MajorTopicYN="N">Mice</DescriptorName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D008810" MajorTopicYN="N">Mice, Inbred C57BL</DescriptorName>
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<MeshHeading>
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</MeshHeading>
<MeshHeading>
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<QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName>
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<MeshHeading>
<DescriptorName UI="D009940" MajorTopicYN="N">Organoids</DescriptorName>
<QualifierName UI="Q000166" MajorTopicYN="N">cytology</QualifierName>
<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D020598" MajorTopicYN="N">Proto-Oncogene Proteins c-myb</DescriptorName>
<QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName>
</MeshHeading>
<MeshHeading>
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<QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName>
<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D051880" MajorTopicYN="N">Receptors, Notch</DescriptorName>
<QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName>
<QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D015398" MajorTopicYN="N">Signal Transduction</DescriptorName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D013234" MajorTopicYN="N">Stem Cells</DescriptorName>
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<MeshHeading>
<DescriptorName UI="D051153" MajorTopicYN="N">Wnt Proteins</DescriptorName>
<QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName>
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<Year>2014</Year>
<Month>07</Month>
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<Month>8</Month>
<Day>27</Day>
<Hour>6</Hour>
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<ArticleId IdType="pii">S1873-5061(14)00091-9</ArticleId>
<ArticleId IdType="doi">10.1016/j.scr.2014.08.002</ArticleId>
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<country>
<li>Australie</li>
<li>France</li>
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<region>
<li>Victoria (État)</li>
<li>Île-de-France</li>
</region>
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<li>Melbourne</li>
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<name sortKey="Germann, Markus" sort="Germann, Markus" uniqKey="Germann M" first="Markus" last="Germann">Markus Germann</name>
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<name sortKey="Cheasley, Dane" sort="Cheasley, Dane" uniqKey="Cheasley D" first="Dane" last="Cheasley">Dane Cheasley</name>
<name sortKey="Malaterre, Jordane" sort="Malaterre, Jordane" uniqKey="Malaterre J" first="Jordane" last="Malaterre">Jordane Malaterre</name>
<name sortKey="Ramsay, Robert G" sort="Ramsay, Robert G" uniqKey="Ramsay R" first="Robert G" last="Ramsay">Robert G. Ramsay</name>
<name sortKey="Sampurno, Shienny" sort="Sampurno, Shienny" uniqKey="Sampurno S" first="Shienny" last="Sampurno">Shienny Sampurno</name>
<name sortKey="Xu, Huiling" sort="Xu, Huiling" uniqKey="Xu H" first="Huiling" last="Xu">Huiling Xu</name>
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<name sortKey="Huyghe, Mathilde" sort="Huyghe, Mathilde" uniqKey="Huyghe M" first="Mathilde" last="Huyghe">Mathilde Huyghe</name>
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<name sortKey="Fre, Silvia" sort="Fre, Silvia" uniqKey="Fre S" first="Silvia" last="Fre">Silvia Fre</name>
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