Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Translatome profiling of Drosophila intestinal enterocytes upon Dietary Restriction

ABSTRACT: We determined the actively translated mRNA induced/repressed by a Dietary Restriction intervention specifically in the differentiated enterocytes of the intestine. For this, we did a "genetic dissection" by expressing a tagged ribosomal subunit (RpL13A-His6FLAG) under the control of the tissue specific Myo1A-GAL4 driver, targetting its expression exclusively to the intestinal enterocytes. By performing a anti-flag pulldown we are then able to enrich our mRNA pool for transcripts that are directly bound to ribosomes and being actively translated. In this manner, we become one step closer to protein synthesis while profiling gene expression.

ORGANISM(S): Drosophila melanogaster

PROVIDER: GSE76396 | GEO | 2016/09/16

SECONDARY ACCESSION(S): PRJNA307183

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Similar Datasets

RNA-seq analysis of gliotactin (Gli)-knockdown Drosophila melanogaster posterior midguts enterocytes (EC)

Project description:The goal of this study is to analyze changes in gene expression produced in posterior midguts after knocking down Gli in enterocytes (EC) during 9 days. Gli was depleted from ECs using a drug-inducible version of the binary GAL4-UAS system in combination with UAS-GLI-RNAi. Targeted gene expression using the 5966GS-GAL4 driver is observed in adult ECs when flies are fed the progesterone analog RU486 (RU+); addition of ethanol is used as a control (RU-), providing cohorts of isogenic individuals with or without induction of the Gli-RNAi transgene.

2016-12-18 | GSE74168 | GEO

Mitochondria regulate dietary lipid processing in enterocytes

Project description:Digested dietary fats are taken up, processed and transported by enterocytes to supply the body with lipids. Most absorbed lipids are assembled into pre-chylomicrons in the endoplasmic reticulum (ER) of enterocytes, which are then transported to the Golgi for maturation and subsequent secretion to the circulation. The role of mitochondria in regulating intestinal lipid transport remains unknown. Here we show that mitochondrial dysfunction in enterocytes inhibits chylomicron production and the transport of dietary lipids to peripheral organs. Mice with intestinal epithelial cell (IEC)-specific ablation of the mitochondrial-specific aspartyl - tRNA synthetase DARS2, as well as of the respiratory chain subunit SDHA or the assembly factor COX10 failed to thrive and showed massive accumulation of lipids within large lipid droplets (LDs) in enterocytes of the proximal small intestine (SI). Feeding a fat-free diet inhibited the formation of LDs in DARS2-deficient enterocytes, showing that accumulating lipids derive mostly from digested fat. Furthermore, metabolic tracing studies revealed impaired transport of dietary lipids to peripheral organs in mice lacking DARS2 in IECs. Moreover, DARS2-deficient enterocytes showed a distinct lack of mature chylomicrons concomitant with a disorganisation of the Golgi apparatus, suggesting that impaired ER to Golgi trafficking underlies impaired chylomicron production and secretion. Taken together, these results revealed a vital role of mitochondria in regulating dietary lipid transport in enterocytes, which is relevant for understanding the intestinal and nutritional defects observed in patients with mitochondrial defects.

2023-12-21 | PXD026934 | Pride

translatome-cd-Analysis of the translatome of Arabidopsis in response to Cadmium stress

Project description:cea03-02_translatome-cd - translatome-cd - Is there a change in the translation in Cadmium stress condition ? - Comparison between translated RNA (polysomes) and total RNA or non translated RNA (monosomes) in cadmium stress conditions. Keywords: transcribed vs translated,treated vs untreated comparison

2007-06-20 | GSE8061 | GEO

Spatial reconstruction of single enterocytes uncovers broad zonation along the intestinal villus axis

Project description:The intestinal epithelium is a highly structured tissue composed of repeating crypt-villus units. Enterocytes, which constitute the most abundant cell type, perform the diverse tasks of absorbing a wide range of nutrients while protecting the body from the harsh bacterial-rich environment. It is unknown if these tasks are equally performed by all enterocytes or whether they are spatially zonated along the villus axis. Here, we performed whole-transcriptome measurements of laser-capture-microdissected villus segments to extract a large panel of landmark genes, expressed in a zonated manner. We used these genes to localize single sequenced enterocytes along the villus axis, thus reconstructing a global spatial expression map. We found that most enterocyte genes were zonated. Enterocytes at villi bottoms expressed an anti-bacterial Reg gene program in a microbiome-dependent manner, potentially reducing the crypt pathogen exposure. Translation, splicing and respiration genes steadily decreased in expression towards the villi tops, whereas distinct mid-top villus zones sub-specialized in the absorption of carbohydrates, peptides and fat. Enterocytes at the villi tips exhibited a unique gene-expression signature consisting of Klf4, Egfr, Neat1, Malat1, cell adhesion and purine metabolism genes. Our study exposes broad spatial heterogeneity of enterocytes, which could be important for achieving their diverse tasks.

2018-02-07 | GSE109413 | GEO

Transcription profiling of human enterocytes cultured with different dietary lipids

Project description:The present study aimed to identify the specific impact of dietary lipids-containing micelles on gene expression in enterocytes.

2008-08-27 | E-MEXP-1446 | biostudies-arrayexpress

ChIPseq of enterocytes of the jejunum from transgene C57BL/6 mice harboring a CKIαΔgut knock-out

Project description:ChIPseq of enterocytes of the jejunum from transgene C57BL/6 mice to assess the effects of a CKIαΔgut knock-out in the jejunum and a CKIαΔgut/p53 double knock-out. In addition, enterocytes expressing a mutant p53 (R172H) in combination with CKIαΔgut knockout were analyzed.

2020-02-25 | E-MTAB-7858 | biostudies-arrayexpress

Determination of Shavenbaby target genes in early Enterocytes (eECs)

Project description:Shavenbaby (Svb) transcription factor is involved in the homeostasis of intestinal stem cells (ISCs), and the differentiation of their enteroblast progeny (EB) into enterocytes (EC). Svb is produced as a long repressor protein called SvbRepressor (SvbREP). In presence of Pri peptides SvbREP is processed into a shorter activator form (SvbACT) through partial proteasomal degradation of the REP domain. In ISCs/EBs, Pri triggers SvbREP to ACT maturation, while SvbREP form accumulates in differentiated enterocytes. The absence of Svb promote the apoptosis of the intestinal stem cells. In ISCs/EBs, the ectopic expression of SvbREP form promotes the differentiation and the overexpression of SvbACT promotes hyperplasia. (Al Hayek, et al 2020) Based on these functional analyses, Svb appears to control ISC/EB survival and behavior, balancing proliferation and differentiation through a molecular switch between its 2 antagonistic isoforms. In this study, we determine the Svb target genes in different cell types along the intestinal cell lineage. This particular metadata sheet refers to early enterocytes (eEC) transcriptomic data (RNAseq) in control condition and upon modulation of Svb function.

2023-12-14 | GSE220558 | GEO

Determination of Shavenbaby target genes in mature Enterocytes (mECs)

Project description:Shavenbaby (Svb) transcription factor is involved in the homeostasis of intestinal stem cells (ISCs), and the differentiation of their enteroblast progeny (EB) into enterocytes (EC). Svb is produced as a long repressor protein called SvbRepressor (SvbREP). In presence of Pri peptides SvbREP is processed into a shorter activator form (SvbACT) through partial proteasomal degradation of the REP domain. In ISCs/EBs, Pri triggers SvbREP to ACT maturation, while SvbREP form accumulates in differentiated enterocytes. The absence of Svb promote the apoptosis of the intestinal stem cells. In ISCs/EBs, the ectopic expression of SvbREP form promotes the differentiation and the overexpression of SvbACT promotes hyperplasia. (Al Hayek, et al 2020) Based on these functional analyses, Svb appears to control ISC/EB survival and behavior, balancing proliferation and differentiation through a molecular switch between its 2 antagonistic isoforms. In this study, we determine the Svb target genes in different cell types along the intestinal cell lineage. This particular metadata sheet refers to early enterocytes (mEC) transcriptomic data (RNAseq) in control condition and upon modulation of Svb function.

2023-12-14 | GSE220560 | GEO

Loss-of-function of MYO5B induces epithelial cell scattering in enterocytes

Project description:A non-functional myosin Vb motor in duodenal enterocytes results in disruption of epithelial cell polarity characterized by complete loss of microvilli and mislocalization of apical brush border proteins in the cytoplasm which finally cause a devastating disease in neonates with severe malabsorption defects accompanied by protracted diarrhea during infancy, classified as microvillus inclusion disease (MVID). The exact mechanisms how loss-of-function of MYO5B induces polarity loss are not completely understood in MVID pathogenesis. Obtaining better insights in cell polarity defects caused by loss of MYO5B, we performed microarray- in combination with protein expression-analysis in an inducible CaCo2 MYO5B RNAi cell system. Surprisingly, in MYO5B-depleted CaCo2 cells, CDH1 coding for the cell adhesion protein E-Cadherin and important for cell adhesion and therefore maintenance of cell polarity, was significantly downregulated. Interestingly, mesenchymal cell markers, specifically Vimentin and N-Cadherin, physiologically not expressed in differentiated epithelium, were upregulated and accompanied by increased phospho-c-jun levels in the nucleus. Importantly phospho-c-jun was also found in nuclei of duodenal enterocytes in MVID patients, indicating loss of MYO5B induces epithelial cell scattering in enterocytes. 3 Myosin 5B KD versus 3 control samples

2013-03-14 | E-GEOD-45134 | biostudies-arrayexpress

Deletion of intestinal Hdac3 remodels the lipidome of enterocytes and protects mice from diet-induced obesity

Project description:Deletion of intestinal Hdac3 remodels the lipidome of enterocytes and protects mice from diet-induced obesity

2020-01-13 | PXD015738 | Pride