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Peyer’s Patch M cells derive from Lgr5+ stem cells require SpiB and are induced by RankL in cultured ‘organoids’

ABSTRACT: Peyer’s Patches consist of domains of specialized intestinal epithelium overlying Gut-Associated Lymphoid Tissue (GALT). Luminal antigens reach the GALT by translocation through epithelial gatekeeper cells, so-called M cells. We have recently demonstrated that all epithelial cells required for the digestive functions of the intestine are generated from Lgr5-expressing stem cells. Here, we show that M cells also derive from these crypt-based Lgr5 stem cells. The Ets family transcription factor Spi-B, known to control effector functions of bone marrow-derived immune cells, is specifically expressed in M cells. In Spi-B-/- mice, M cells are entirely absent, which occurs in a cell-autonomous fashion. It has been shown that Tnfsf11 (RankL) can induce M cell development in vivo. In intestinal organoid (‘mini-gut’) culture, we show that stimulation with RankL induces SpiB expression within 24hrs and subsequently of other M cell markers. We conclude that RankL-induced expression of Spi-B is essential for Lgr5 stem cell-derived epithelial precursors to develop into M cells.

ORGANISM(S): Mus musculus

PROVIDER: GSE38785 | GEO | 2012/06/19

SECONDARY ACCESSION(S): PRJNA168973

REPOSITORIES: GEO

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PeyerM-bM-^@M-^Ys Patch M cells derive from Lgr5+ stem cells require SpiB and are induced by RankL in cultured M-bM-^@M-^XorganoidsM-bM-^@M-^Y

Project description:PeyerM-bM-^@M-^Ys Patches consist of domains of specialized intestinal epithelium overlying Gut-Associated Lymphoid Tissue (GALT). Luminal antigens reach the GALT by translocation through epithelial gatekeeper cells, so-called M cells. We have recently demonstrated that all epithelial cells required for the digestive functions of the intestine are generated from Lgr5-expressing stem cells. Here, we show that M cells also derive from these crypt-based Lgr5 stem cells. The Ets family transcription factor Spi-B, known to control effector functions of bone marrow-derived immune cells, is specifically expressed in M cells. In Spi-B-/- mice, M cells are entirely absent, which occurs in a cell-autonomous fashion. It has been shown that Tnfsf11 (RankL) can induce M cell development in vivo. In intestinal organoid (M-bM-^@M-^Xmini-gutM-bM-^@M-^Y) culture, we show that stimulation with RankL induces SpiB expression within 24hrs and subsequently of other M cell markers. We conclude that RankL-induced expression of Spi-B is essential for Lgr5 stem cell-derived epithelial precursors to develop into M cells. Small intestinal organoids were derived from wildtype (WT) mice. Recombinant mouse RankL (BioLegend) was added to the organoid culture medium in concentrations of 50-200ng/ml and fresh medium was added at day 2 and day 5. At the indicated time points, organoids were harvested for RNA isolation and microarray analysis to look for gene expression changes in reponse to RanKL.

2012-06-18 | E-GEOD-38785 | biostudies-arrayexpress

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2020-02-29 | E-MTAB-6501 | biostudies-arrayexpress

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Spatiotemporal Analysis of Human Intestinal Development at Single Cell Resolution - Spatial Transcriptomics

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Gene expression profile of murine intestinal epithelial cells after RANKL treatment

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DOT1L-mediated H3K79 methylation in chromatin is dispensable for Wnt pathway-specific and other intestinal epithelial functions

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Non-neuronal acetylcholine as an endogenous regulator of proliferation and differentiation of Lgr5-positive stem cells in mice

Project description:Acetylcholine (ACh) has been considered a neurotransmitter residing in central, parasympathetic and neuromuscular synapses of mammals. Here, experiments using crypt-villus organoids that lack nerve and immune cells in culture led us to suggest that endogenous ACh is synthesized in the intestinal epithelium to evoke growth and differentiation of the organoids through activation of muscarinic ACh receptors (mAChRs). The extracts of the cultured organoids exhibit a noticeable capacity for ACh synthesis that is sensitive to a potent inhibitor of choline acetyltransferase (ChAT). Imaging mass spectrometry reveals distribution of endogenous ACh that is localized in intestinal epithelial layer in the cultured organoids as well as in mouse small intestinal epithelium in vivo, suggesting non-neural resources of ACh. Treatment of organoids with carbachol down-regulates growth of organoids and expression of marker gene for each epithelial cell. On the other hand, antagonists for mAChRs enhances growth and differentiation of organoids, indicating involvement of mAChRs in regulating proliferation and differentiation of Lgr5-positive stem cells. Collectively, our data provide evidence that endogenous ACh released from intestinal epithelium maintains homeostasis of intestinal epithelial cell growth and differentiation via mAChRs in mice. Gene expression patters of gut, crypt, y-organoid and o-organoid, respectively

2013-08-15 | E-GEOD-49864 | biostudies-arrayexpress

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