Sox2 suppresses gastric tumorigenesis in mice
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
SUBMITTER: Abby Sarkar
PROVIDER: E-GEOD-83966 | biostudies-arrayexpress |
REPOSITORIES: biostudies-arrayexpress
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Project description:Purpose: Sox2 expression marks gastric stem and progenitor cells, raising important questions regarding the genes regulated by Sox2 and the role of Sox2 itself during stomach homeostasis and disease. The goal of this study is to determine the function of and the genes regulated by Sox2 in the stomach. Methods: mRNA profiles of Sox2 WT and Sox2 KO gastric glands were generated by RNA-sequencing, in triplicate, using a Illumina HiSeq 2500 instrument, resulting in 36 million single-end 50bp reads per smaple. Sequencing reads were mapped to the mouse reference genome (mm10/GRCm38) using STAR (Dobin et al., 2013). Read counts over transcripts were calculated using HTSeq v.0.6.0 (Anders et al., 2015) based on a current Ensembl annotation file for mm10/GRCm38 (release 75). Results: Sox2 is dispensiable for gastric stem cell self-renewal and epithelial homeostasis, however modulates the expression of cancer and intestinal related genes. mRNA profiles of stomachs from 10 week old Sox2 WT and Sox2 KO mice were generated by sequencing, in triplicate, using a Illumina HiSeq 2500.
2016-08-04 | E-GEOD-83964 | biostudies-arrayexpress
Project description:Purpose: Sox2 expression marks gastric stem and progenitor cells, raising important questions regarding the genes regulated by Sox2 and the role of Sox2 itself during stomach homeostasis and disease. The goal of this study is to determine the function of and the genes regulated by Sox2 in the stomach. Methods: Sox2 ChIP-enriched DNA and input DNA was isolated from gastric glands of adult antrum from Sox2 KO and Sox2 WT mice. DNA was purified and genomic libraries were prepared as described (Sulahian et al., 2014), using four micrograms of goat anti-SOX2 (AF2018, R&D). Libraries were sequenced (50 bp, single-end reads) on an Illumina Hi-Seq 2000 instrument. Results: Sox2 is dispensiable for gastric stem cell self-renewal and epithelial homeostasis, however modulates the expression of wnt, intestinal and cancer related genes Examination of Sox2 targets in the stomachs of Sox2 WT and Sox2 KO mice.
2016-08-04 | E-GEOD-83965 | biostudies-arrayexpress
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2011-11-11 | E-TABM-1099 | biostudies-arrayexpress
Project description:Reprogramming cells from one fate to another, using transcription factors, generates cells for research and potential therapy, yet little is known about the initial engagement of reprogramming factors with the genome. We mapped the interactions between Oct4, Sox2, Klf4, and c-Myc (OSKM) and the human genome during the first 48 hours of cellular reprogramming to pluripotency. Unlike that reported in ES/iPS cells, we find extensive overlap in the initial binding of OSKM, demonstrating that the initial regulatory network differs markedly from that in pluripotency. OSK act as pioneer factors for c-Myc, and c-Myc enhances the engagement of OSK, including at many genes that are required for conversion to pluripotency. Distal enhancer sites in closed chromatin dominate the initial OSKM distribution. Hierarchical chromatin binding during reprogramming resembles that employed during development. Four chIP-seq data sets (Oct4, Sox2, Klf4, and c-Myc) are included, one lane per factor, no replicates. Also included is an input lane from the same conditions and two mock lentiviral controls (no exogenous OSKM factors) treated with Oct4 IP and c-Myc IP.
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Project description:The long term objective is to create an encyclopedia of the expression levels of all genes in multiple components of the developing bladder. The central thesis is straightforward. The combination of micro dissected tissues and FACS sorted cells plus microarray analysis offers a powerful, efficient and effective method for the creation of a global gene expression atlas of the developing urogenital system. Microarrays with essentially complete genome coverage can be used to quantitate expression levels of every gene. The ensuing rapid read-out provides an expression atlas that is more sensitive, more economical and more complete than would be possible by in situ hybridizations alone. The data submitted here delineates the gene expression profiles of the mesenchymal and epithelial compartments of the E13 mouse bladder neck/urethral compartment. FVB/N mice were time mated. At embryonic day 13 mice were euthanized by decapitation and the bladders were microdissected and cut just below the ureters. Since the EDTA dissociation was ineffective, the bladder neck and urethra were collected and treated with 1 mg/ml trypsin in Tyrode's solution for 20 minutes at 37°C. The layers were separated using a fine needle and rimming. The samples were placed in RLT and stored at -80°C. RNA was prepared and the Epicentre 2-round amplification scheme described under the Lessard Group Protocols on the GUDMAP pages were performed. The amplified RNA was examined with the Affymetrix GeneChip Mouse Genome 430 2.0 Array.
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Project description:The conducting airway epithelium of the rodent and human lung is underlaid by mesenchymal cells that include vasculature, smooth muscle, fibroblasts and cartilage. The goal of this project is to identify cellular and molecular changes in the mesenchyme after injury to the epithelium by exposure to SO2 and which may participate in repair of the epithelium We used Affymetrix microarray analysis to compare transcripts in tracheal mesenchyme before and after SO2 injury. Mice tracheal epithelium and mesenchyme were separate for RNA extraction before and 48hrs after SO2 injury. Sample from 4 mice were pooled for each biological experiment. The experiments were repeated three times for triplicate samples.
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