Ontology highlight
ABSTRACT:
PROVIDER: PRJNA794863 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:The marine teleost intestine plays a vital role in whole body salt and water homeostasis. Marine fish must drink seawater in order to rehydrate, and processing of that seawater throughout the gastrointestinal tract allows for the extraction of water from this highly hyperosmotic source. Although the molecular mechanisms of this process have been the subject of much investigation, numerous questions remain. Here, Gulf toadfish (Opsanus beta) were acclimated to normal seawater (35 ppt) of hypersaline seawater (60 ppt) and changes in the anterior intestine, posterior intestine, and intestinal fluid proteomes were investigated using a shotgun proteomics approach employing isobaric TMT tags.
2018-06-26 | PXD005923 | Pride
Project description:We used 10X scRNA-Seq to investigate gene expression dynamics and cell type changes in four turbot immuno-organs (gill, head kidney, posterior intestine and spleen) during infection. In total, 103,055 high quality leukocytes were characterized. Our results not only provide a useful resource for the study of fish immune system, but also uncover the origins of adaptive immunity throughout vertebrate evolution.
2021-11-06 | GSE174019 | GEO
Project description:Aim: The mammalian gut is the largest endocrine organ. Dozens of hormones secreted by enteroendocrine cells regulate a variety of physiological functions of the gut but also of the pancreas and brain. Here, we examined the role of the helix-loop-helix transcription factor ID2 during the differentiation of intestinal stem cells along the enteroendocrine lineage. Methods: To assess the functions of ID2 in the adult mouse small intestine, we used single-cell RNA sequencing, genetically modified mice, and organoid assays. Results: We found that in the adult intestinal epithelium Id2 is predominantly expressed in enterochromaffin and peptidergic enteroendocrine cells. Consistently, the loss of Id2 leads to the reduction of Chromogranin A-positive enteroendocrine cells. In contrast, the numbers of tuft cells are increased in Id2 mutant small intestine. Moreover, ablation of Id2 elevates the numbers of Serotonin+ enterochromaffin cells and Ghrelin+ X-cells in the posterior part of the small intestine. Finally, Id2 acts downstream of BMP signalling during the differentiation of Glucagon Like Peptide-1+ L-cells and Cholecystokinin+ I-cells towards Neurotensin+PYY+ N-cells. Conclusion: Id2 plays an important role in cell fate decisions in the adult small intestine. Firstly, ID2 suppresses the differentiation of secretory intestinal epithelial progenitors towards tuft cell lineage and thus controls host immune response on commensal and parasitic microbiota. Next, ID2 is essential for establishing a differentiation gradient for enterochromaffin and X-cells along the anterior-posterior axis of the gut. Finally, ID2 is necessary for the differentiation of N-cells thus ensuring a differentiation gradient along the crypt-villi axis.
2022-06-21 | GSE178586 | GEO
Project description:Based on the ability of FGF and/or WNT signaling to control posterior fate and intestinal lineage commitment, several groups have reported that treating mouse or human Pluripotent Stem Cell (PSC) derived definitive endoderm (DE) with small molecules or ligands that activate WNT signaling, or a combination of WNT and FGF signaling can induce an intestinal fate in human DE. In this current study, we leverage hESC derived human intestinal organoids (HIOs) to test the hypothesis that the duration of exposure to high levels of FGF and WNT signaling controls regional intestinal identity, with shorter durations generating intestine similar to the proximal duodenum, and longer durations distalizing HIOs to become similar to jejunum/ileum. Our results demonstrate that exposing human definitive endoderm (DE) cultures to short or long incubations of media that activate WNT and FGF siganling results in gene and protein expression profiles that are consistent with tissue that has been patterned into proximal (duodenum) or distal (ileum) small intestine, respectively.
2016-07-04 | E-MTAB-4168 | biostudies-arrayexpress