Identification of cell-types in the mouse stomach
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA892141 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR21975928_1.fastq.gz | Fastqsanger.gz | |||
| SRR21975928_2.fastq.gz | Fastqsanger.gz | |||
| SRR21975929_1.fastq.gz | Fastqsanger.gz | |||
| SRR21975929_2.fastq.gz | Fastqsanger.gz | |||
| SRR21975930_1.fastq.gz | Fastqsanger.gz |
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Project description:We determined the cell types present in the mouse stomach by single-cell RNA-seq with Quartz-Seq2.
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Project description:Transcription factor Foxq1 controls mucin gene expression and granule content in mouse stomach surface mucous cells ; Background and Aims: The gastric mucosa provides a stringent epithelial barrier and produces acid and enzymes that initiate digestion. In this regenerating tissue, progenitors differentiate continually into 4 principal specialized cell types, yet underlying mechanisms of differentiation are poorly understood. We identified stomach-restricted expression of the forkhead transcription factor FOXQ1. Methods: We used a combination of genetic, histochemical, ultrastructural and molecular analysis to study gastric cell lineages with respect to FOXQ1. Results: Within the developing and adult gastrointestinal tract, Foxq1 mRNA is restricted to the stomach, expressed prominently in foveolar (pit) cells, the abundant mucin-producing cells that line the mucosal surface, and required for their complete differentiation. Mice carrying Foxq1 coding mutations show virtual absence of mRNA and protein for the backbone of the predominant stomach mucin, MUC5AC. These observations correspond to a paucity of foveolar-cell secretory vesicles and notable loss of stomach but not intestinal mucus. Transcriptional profiling identified a surprisingly restricted set of genes with altered expression in Foxq1 mutant stomachs. MUC5AC is a highly tissue-restricted product that similarly depends on FOXQ1 in its other major site of expression, conjunctival goblet cells. Conclusions: Taken together, these observations imply that promotion of gastric MUC5AC synthesis is a primary, cell-autonomous function of FOXQ1. This study is the first to implicate a transcription factor in terminal differentiation of foveolar cells and begins to define the requirements to assemble highly specialized organelles and cells in the gastric mucosa. DOI: 10.1053/j.gastro.2008.04.019 Experiment Overall Design: RNA from stomach antrum from 2 of each Satin, Beige, and BL6 mice were compared using microarray analysis.
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Project description:The upper gastrointestinal tract consisting of the esophagus, stomach and duodenum controls food transport, digestion, nutrient uptake and hormone production. By single-cell analysis of healthy epithelia of these human organs, we molecularly defined their distinct cell types. We identified a quiescent COL17A1high stem/progenitor cell population within the basal cell layer of the esophagus and detected substantial gene expression differences between identical cell types of the human and mouse stomach. Selective and high expression of BEST4, CFTR, guanylin and uroguanylin identified the rare duodenal BCHE cells, which likely mediate high-volume fluid secretion due to continual activation of the CFTR channel by guanylin/uroguanylin-mediated autocrine signaling. Unexpectedly, the previously uncharacterized serotonin-producing enterochromaffin cells in the antral stomach significantly differ in gene expression from the duodenal enterochromaffin cells. We furthermore discovered that the histamine-producing enterochromaffin-like cells in the oxyntic stomach express luteinizing hormone, not previously seen in enteroendocrine cells.
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Project description:The upper gastrointestinal tract consisting of the esophagus, stomach and duodenum controls food transport, digestion, nutrient uptake and hormone production. By single-cell analysis of healthy epithelia of these human organs, we molecularly defined their distinct cell types. We identified a quiescent COL17A1high stem/progenitor cell population within the most basal cell layer of the esophagus and detected substantial gene expression differences between identical cell types of the human and mouse stomach. Selective and high expression of BEST4, CFTR, guanylin and uroguanylin identified a new rare cell type in the duodenum, referred to as BCHE cells, which likely mediate high-volume fluid secretion due to continual activation of the CFTR channel by guanylin/uroguanylin-mediated autocrine signaling. Previously uncharacterized serotonin-producing enterochromaffin cells in the antral stomach are shown to significantly differ in gene expression from the duodenal enterochromaffin cells. We furthermore discovered that the histamine-producing enterochromaffin-like cells in the oxyntic stomach express the luteinizing hormone, which was not previously seen in enteroendocrine cells.
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Project description:Transcription factor Foxq1 controls mucin gene expression and granule content in mouse stomach surface mucous cells Background and Aims: The gastric mucosa provides a stringent epithelial barrier and produces acid and enzymes that initiate digestion. In this regenerating tissue, progenitors differentiate continually into 4 principal specialized cell types, yet underlying mechanisms of differentiation are poorly understood. We identified stomach-restricted expression of the forkhead transcription factor FOXQ1. Methods: We used a combination of genetic, histochemical, ultrastructural and molecular analysis to study gastric cell lineages with respect to FOXQ1. Results: Within the developing and adult gastrointestinal tract, Foxq1 mRNA is restricted to the stomach, expressed prominently in foveolar (pit) cells, the abundant mucin-producing cells that line the mucosal surface, and required for their complete differentiation. Mice carrying Foxq1 coding mutations show virtual absence of mRNA and protein for the backbone of the predominant stomach mucin, MUC5AC. These observations correspond to a paucity of foveolar-cell secretory vesicles and notable loss of stomach but not intestinal mucus. Transcriptional profiling identified a surprisingly restricted set of genes with altered expression in Foxq1 mutant stomachs. MUC5AC is a highly tissue-restricted product that similarly depends on FOXQ1 in its other major site of expression, conjunctival goblet cells. Conclusions: Taken together, these observations imply that promotion of gastric MUC5AC synthesis is a primary, cell-autonomous function of FOXQ1. This study is the first to implicate a transcription factor in terminal differentiation of foveolar cells and begins to define the requirements to assemble highly specialized organelles and cells in the gastric mucosa. Keywords: mutant mouse stomach
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