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Expression data from D. melanogaster intestinal stem cell with suppression of Imd in progenitors

ABSTRACT: Expression data from D. melanogaster intestinal stem cell with suppression of Imd in progenitors

PROVIDER: PRJNA718070 | ENA |

REPOSITORIES: ENA

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Expression data from D. melanogaster intestinal stem cell with suppression of Imd in progenitors

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Project description:Immortal spheroids were generated from fetal mouse intestine using the culture system developed to culture organoids from adult intestinal epithelium. Spheroids are made of a monostratified polarized epithelium displaying a poorly differentiated intestinal phenotype. The proportion of spheroids generated from intestinal explants progressively decreases from fetal to postnatal period, with a corresponding increase in production of organoids. Spheroid cells show indefinite self-renewing properties but exhibit a transcriptome strikingly different from that of adult intestinal stem cells reminiscent of incompletely caudalized progenitors. The receptor Lgr4, but not Lgr5, is essential for their growth. Trop2/Tacstd2 and Cnx43/Gja1, two markers highly enriched in spheroids, are expressed throughout the E14 intestinal epithelium. Comparison of in utero and neonatal lineage tracing using Cnx43-CreER and Lgr5-CreERT2 mice identified spheroid-generating cells as developmental progenitors involved in generation of the prenatal intestinal epithelium. Ex vivo, spheroid cells have the potential to differentiate into organoids, thus qualifying them as a new type of intestinal stem-like cells. Two-channel microarray experiments were performed from spheroid/organoid pairs isolated each from a given embryo. Following initial seeding of small intestine from a given embryo/mouse (at E16, E18 or P0), spheroids and organoids were selectively picked up for each animal and replated for 3 passages to reach sample homogeneity. Hybridization was performed on the 4 independent pairs with dye-swap.

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