Characterization of Interleukin 11-producing fibroblasts that constitute a niche for tumor development [Agilent]
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PROVIDER: PRJNA703022 | ENA |
REPOSITORIES: ENA
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Project description:Interleukin (IL)-11 belongs to a member of the IL-6 family of cytokines and is involved in a variety of cellular responses. However, the origin and functions of IL-11-producing (IL-11+) cells are not fully understood. To characterize IL-11+ cells in vivo, we generated Il11 reporter mice. IL-11+ cells rapidly appeared in the colon of mice after dextran sulfate sodium treatment. IL-11+ cells expressed fibroblast markers and genes associated with cell proliferation and tissue repair. IL-11+ cells also appeared in the colon of three murine tumor models and human colorectal cancers. Deletion of Il11ra1 or Il11 attenuated the development of colitis-associated colorectal cancers in mice. IL-11 induced STAT3 phosphorylation in colonic fibroblasts, and injection of IL-11 receptor agonist upregulated many genes that were enriched in IL-11+ cells. Together, tumor cells induced IL-11+ fibroblasts, and a feed-forward loop between IL-11 and IL-11+ fibroblasts might constitute a niche for promoting tumor development.
2021-02-22 | GSE141643 | GEO
Project description:Characterization of Interleukin 11-producing fibroblasts that constitute a niche for tumor development
| PRJNA703021 | ENA
Project description:This SuperSeries is composed of the SubSeries listed below.
2021-02-22 | GSE141644 | GEO
Project description:Homeostasis of self-renewing small intestinal crypts results from neutral competition between Lgr5 stem cells, small cycling cells located at crypt bottoms1, 2. Lgr5 stem cells are interspersed between terminally differentiated Paneth cells, that are known to produce bactericidal products such as lysozyme and cryptdins/defensins3. Single Lgr5-expressing stem cells can be cultured to form long-lived, self-organizing crypt-villus organoids in the absence of non-epithelial niche cells4. Here, we note a close physical association of Lgr5 stem cells with Paneth cells in vivo and in vitro. CD24+ Paneth cells express EGF, TGF?, Wnt3 and the Notch-ligand Dll4, all essential signals for stem cell maintenance in culture. Co-culturing of sorted stem cells with Paneth cells dramatically improves organoid formation. This Paneth cell requirement can be substituted by a pulse of exogenous Wnt. Genetic removal of Paneth cells in vivo results in the concomitant loss of Lgr5 stem cells. In colon crypts, CD24+ cells residing between Lgr5 stem cells may represent the Paneth cell equivalents. We conclude that Lgr5 stem cells compete for essential niche signals provided by a specialized daughter cell, the Paneth cell. We used intestinal cell fractions from Lgr5-EGFP-ires-CreERT2 mice, expressing GFP under the control of the Lgr5 promoter. RNA was isolated from two FACS sorted cell populations: stem cells were sorted based on high level of GFP expression (GFPhi) and Paneth cells were sorted based on high level of CD24 expression (CD24hi) and high side-scatter (SSChi). Differentially labelled cRNA from GFPhi and CD24hi/SSChi cells from two different sorts (each combining ten individual mice) were hybridized on 4X44K Agilent Whole Mouse Genome dual colour Microarrays (G4122F) in two dye swap experiments, resulting in four individual arrays.
2010-11-29 | E-GEOD-25109 | biostudies-arrayexpress
Project description:Homeostasis of self-renewing small intestinal crypts results from neutral competition between Lgr5 stem cells, small cycling cells located at crypt bottoms1, 2. Lgr5 stem cells are interspersed between terminally differentiated Paneth cells, that are known to produce bactericidal products such as lysozyme and cryptdins/defensins3. Single Lgr5-expressing stem cells can be cultured to form long-lived, self-organizing crypt-villus organoids in the absence of non-epithelial niche cells4. Here, we note a close physical association of Lgr5 stem cells with Paneth cells in vivo and in vitro. CD24+ Paneth cells express EGF, TGFα, Wnt3 and the Notch-ligand Dll4, all essential signals for stem cell maintenance in culture. Co-culturing of sorted stem cells with Paneth cells dramatically improves organoid formation. This Paneth cell requirement can be substituted by a pulse of exogenous Wnt. Genetic removal of Paneth cells in vivo results in the concomitant loss of Lgr5 stem cells. In colon crypts, CD24+ cells residing between Lgr5 stem cells may represent the Paneth cell equivalents. We conclude that Lgr5 stem cells compete for essential niche signals provided by a specialized daughter cell, the Paneth cell.
2010-11-29 | GSE25109 | GEO
Project description:ROF1 induction experiments [Agilent]
| PRJNA664773 | ENA
Project description:Interleukin-36y-producing macrophages drive IL-17-mediated fibrosis.
| PRJNA574190 | ENA
Project description:miRQC study, Agilent Platform data
| PRJNA213966 | ENA
Project description:Background & aimsIntestinal epithelial stem cells that express Lgr5 and/or Bmi1 continuously replicate and generate differentiated cells throughout life1. Previously, Paneth cells were suggested to constitute an epithelium-intrinsic niche that regulates the behavior of these stem cells2. However, ablating Paneth cells has no effect on maintenance of functional stem cells3-5. Here, we demonstrate definitively that a small subset of mesenchymal, subepithelial cells expressing the winged-helix transcription factor Foxl1 are a critical component of the intestinal stem cell niche.MethodsWe genetically ablated Foxl1+ mesenchymal cells in adult mice using two separate models by expressing either the human or simian diphtheria toxin receptor (DTR) under Foxl1 promoter control.ConclusionsKilling Foxl1+ cells by diphtheria toxin administration led to an abrupt cessation of proliferation of both epithelial stem- and transit-amplifying progenitor-cell populations that was associated with a loss of active Wnt signaling to the intestinal epithelium. Therefore, Foxl1-expressing mesenchymal cells constitute the fundamental niche for intestinal stem cells.
| S-EPMC4772878 | biostudies-literature