Project description:We generated knock-in mice expressing GFP under the control of the endogenous GIP (Glucose-dependent Insulinotropic Polypeptide) promoter that enable the isolation of a purified population of small intestine K cells. Using RNA-Seq, we comprehensively characterized the transcriptomes of GIP-GFP cells as well as the entire enteroendocrine lineage derived from Neurogenin3 (Ngn3)-expressing progenitors. We interrogated the whole transcriptome of FACS-isolated small intestine GIPGFP cells using high-throughput mRNA sequencing. We also obtained the global gene expression patterns of the entire enteroendocrine cell lineage as well as the non-enteroendocrine cell population, comprising enterocytes, goblet cells and Paneth cells. To achieve this, small intestine epithelial cells from male mice resulting from the breeding of Neurogenin3 (Ngn3)-Cre mice with ROSA26-LoxP-STOP-LoxP-tomato indicator mice were isolated based on Tomato fluorescence and negative staining for CD45. Due to the small cell numbers, we constructed each of the three RNA-Seq libraries (GIPGFP, Ngn3TOMATO, and Ngn3-) using a pool of equal amounts of individual RNA samples without RNA amplification.
Project description:Genome wide expression profiling to determine the overlap of Affymetrix-signals with SOLID sequencing RNA was extracted using the Qiagen RNeasy kit following the manufacturers guidelines, arrays were prepared and hybridized following the Affymetrix protocol. Mus musculus samples from small intestine and colon, to be compared to transcript data aquired with other techniques
Project description:To characterize the effect of mutating Etv1 on enteroendocrine cell specification and hormone expression, we performed scRNA-seq experiments analysing cells from control and Etv1 mutant organoid cultures from mouse distal small intestine. We identified 6 transcriptionally distinct clusters, that had a similar cellular contribution from controls and Etv1 mutants. In the cluster identified as enteroendocrine cells, we observed differences in hormone expression between controls and Etv1 mutants.
Project description:To discover cells with mixed enteroendocrine/Paneth/goblet features arising from Neurog3+ progenitors in WT and NFKO mice, we used single-cell RNA sequencing (scRNA-seq) to analyze the diversity of Neurog3 derived cells in the small intestine.