Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

The transcription factor CDX2 maintains active enhancer in intestinal villus cells in vivo (expression data)

ABSTRACT: We established whether partner transcription factor binding, chromatin structure, or gene expression is compromised upon loss of partner factors cdx2 or hnf4a in mouse intestinal villi This metadata file describes the gene expression componant of that data Intestinal epithelia were collected from mouse jejunum using EDTA-based chelation and RNA was made using trizol. RNA was checked for quality and then processed for affymetrix arrays, 430 2.0.

ORGANISM(S): Mus musculus

SUBMITTER: Michael Verzi

PROVIDER: E-GEOD-34567 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Intestinal master transcription factor CDX2 controls chromatin access for partner transcription factor binding.

Verzi Michael P MP Shin Hyunjin H San Roman Adrianna K AK Liu X Shirley XS Shivdasani Ramesh A RA

Molecular and cellular biology 20121105 2

Tissue-specific gene expression requires modulation of nucleosomes, allowing transcription factors to occupy cis elements that are accessible only in selected tissues. Master transcription factors control cell-specific genes and define cellular identities, but it is unclear if they possess special abilities to regulate cell-specific chromatin and if such abilities might underlie lineage determination and maintenance. One prevailing view is that several transcription factors enable chromatin acce ...[more]

PMID: 23129810

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Project description:The early interaction of Salmonella enterica serovar typhimurium DT104 with intact small intestinal mucosa was studied in a Small Intestinal Segment Perfusion (SISP) model. Intestinal segments were infected with or without Salmonella. Scrapings from jejunal segments were collected after perfusion for 0, 2, 4, or 8 hours. Details of the SISP experiment are described in: Niewold TA, Veldhuizen EJ, van der Meulen J, Haagsman HP, de Wit AA, Smits MA, Tersteeg MH, Hulst MM. Using the Operon 13K pig oligonucleotide array differences in host gene expression were recorded between infected and uninfected segments within a single pig (isogenic comparisons), and between identical treated segments collected from 3 individual SISP pigs, all responding markedly different to infection with Salmonella (inter-animal comparisons). A Small Intestinal Segment Perfusion (SISP) test was performed with 3 pigs (pig no. 2, 3, and 4) (cross-bred YorkshireM-CM-^W(Large WhiteM-CM-^WLandrace)). Two adjacent segments prepared in the mid-jejunum of each pig were perfused for 1 hour with Salmonella enterica serovar typhimurium DT104 suspended in peptone solution (10E-09 CFU/ml) or with peptone solution alone (mock infected segment) respectively. Subsequently, segments were perfused with peptone solution alone for a maximum period of 8 hours. At 2, 4, and 8 hours a part of the infected segment was dissected to obtain mucosal scrappings. The same was done at 0 and 8 hours for the uninfected (mock) control segment. RNA isolated from scrappings was used for microarray comparisons using the Operon 13K pig oligonucleotide array. 9 comparisons were done. For each of the 3 SISP pigs, expression in the 8 hours perfused infected segment, perfused for 8 hours, was compared to expression in its adjacent mock infected segment (3 isogenic comparisons, 8 hpi.). Expression in the infected segment of each SISP pig, dissected after 2 or 4 hours of perfusion, was compared to expression in an infected segment dissected from another SISP pig (2 versus 3, 2 versus 4, and 3 versus 4 / 3 comparisons at 2 hpi., and 3 comparisons at 4 hpi.). Dye-swaps were performed for each comparison. jejunum pig, host-microbe interaction, Salmonella enterica serovar typhimurium DT104.

Dataset Information

The transcription factor CDX2 maintains active enhancer in intestinal villus cells in vivo (expression data)

Publications

Intestinal master transcription factor CDX2 controls chromatin access for partner transcription factor binding.

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