Notch signaling in intestinal homeostasis across species: the cases of Drosophila, Zebrafish and the mouse |
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Authors: | Fre Silvia Bardin Allison Robine Sylvie Louvard Daniel |
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Institution: | aMorphogenesis and Intracellular Signaling, Institut Curie, UMR 144 CNRS, Paris, France;bStem Cells and Tissue Homeostasis, Institut Curie, UMR3215 CNRS, U934 Inserm, Paris, France |
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Abstract: | Notch signaling has been recently shown to have a fundamental role in stem cell maintenance and control of proper homeostasis in the intestine of different species. Here, we briefly review the current literature on Notch signals in the intestine of Drosophila, Zebrafish and the mouse, and try to highlight conserved and divergent Notch functions across species. Notch signals show a remarkably conserved role in skewing cell fate choices in intestinal lineages throughout evolution. Genetic analysis demonstrates that loss of Notch signaling invariably leads to increased numbers of secretory cells and loss of enterocytes, while gain of Notch function will completely block secretory cell differentiation. Finally, we discuss the potential contribution of Notch signaling to the initiation of colorectal cancer by controlling the maintenance of the undifferentiated state of intestinal neoplastic cells and speculate on the therapeutic consequences of affecting cancer stem cells. |
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Keywords: | Notch signaling Intestine Stem cells Tumorigenesis Drosophila Mouse |
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