GEO DataSets

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Mus musculus

Type:

Expression profiling by array

Platforms:

GPL6246 GPL1261

8 Samples

Download data: CEL

(Submitter supplied) Polycomb group (PcG) proteins are epigenetic silencers whose dysregulation is frequently linked to cancer via mechanisms that remain unclear. Using conditional knock-out mice in a colitis-associated colorectal cancer (CAC) model, we found that Bmi1 and Mel18 are important initiation and maintenance factors during CAC tumorigenesis. Epithelial depletion of both Bmi1 and Mel18, but not either gene alone, significantly reduces tumor growth and multiplicity. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

4 Samples

Download data: CEL

(Submitter supplied) Polycomb group (PcG) proteins are epigenetic silencers whose dysregulation is frequently linked to cancer via mechanisms that remain unclear. Using conditional knock-out mice in a colitis-associated colorectal cancer (CAC) model, we found that Bmi1 and Mel18 are important initiation and maintenance factors during CAC tumorigenesis. Epithelial depletion of both Bmi1 and Mel18, but not either gene alone, significantly reduces tumor growth and multiplicity. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6246

4 Samples

Download data: CEL

(Submitter supplied) Histone deacetylases (Hdac) remove acetyl groups from proteins, influencing global and specific gene expression. Hdacs control inflammation, as shown by Hdac inhibitor-dependent protection from DSS-induced murine colitis. While tissue-specific Hdac knockouts show redundant and specific functions, little is known of their intestinal epithelial cell (IEC) role. We have shown previously that dual Hdac1/Hdac2 IEC-specific loss disrupts cell proliferation and determination, with decreased secretory cell numbers and altered barrier function. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

6 Samples

Download data: CEL

(Submitter supplied) Effect of Smox deletion and spermidine supplementation on colonic gene expression during carcinogenesis

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24247

30 Samples

Download data: CSV

(Submitter supplied) Background and aims: The transcription factor Stat3 has been considered to promote progression and metastasis of intestinal cancers. Methods: We investigated the role of Stat3 in intestinal tumors using mice with conditional ablation of Stat3 in intestinal epithelial cells (Stat3deltaIEC). Results: In the APCmin mouse model of intestinal cancer, genetic ablation of Stat3 reduced the multiplicity of early adenomas. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6246

18 Samples

Download data: CEL

(Submitter supplied) Insufficient repair of DNA lesions results in the acquisition of somatic mutations and displays the driving force in cancerogenesis. Ribonucleotide incorporation by eukaryotic DNA polymerases occurs during every round of genome duplication and represents by far the most frequent type of naturally occurring DNA lesions. RNAse H2 removes misincorporated ribonucleotides from genomic DNA in a process termed ribonucleotide excision repair (RER). more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL21493

29 Samples

Download data: TXT

(Submitter supplied) We generated conditional knockout of MHCII in intestinal epithelial cells in C57BL/6 mice (I-AbΔIEC) and compared their colonic transcriptome in control and Citrobacter rodentium infected mice. I-AbWT or I-AbΔIEC mice were orally gavaged with Citrobacter rodentium DBS100

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL16570

12 Samples

Download data: CEL

(Submitter supplied) Inflammation has pleiotropic effects on carcinogenesis and tumor progression. Signaling through the adaptor protein MyD88 promotes carcinogenesis in several chemically induced cancer models. Interestingly, we observed a protective role for MyD88 in the development of AOM/DSS colitis-associated cancer. The inability of Myd88-/- mice to heal ulcers generated upon injury creates an inflammatory environment that increases the frequency of mutations and results in a dramatic increase in adenoma formation and cancer progression. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

32 Samples

Download data: CEL

(Submitter supplied) P53 induced Mir34a is a tumor suppressor microRNA that plays important roles in cancer related processes such as proliferation, invasion and metastasis. Simultaneous loss of Mir34a and p53 is often observed in CRC. Here we show that, combined deletion of Mir34a and p53 has synergistic effects in suppressing tumor initiation, progression, invasion and metastasis in CRC by using mice lacking Mir34a and p53 in their intestinal epithelium. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17021

12 Samples

Download data: TXT

(Submitter supplied) Inflammatory conditions can contribute to tumor formation. However, any clear marker predicting progression to cancer are still lacking. The aim of our study was to analyze microRNA modulations accompanying inflammation-induced tumor development to determine whether these microRNA may jointly affect the expression of genes involved in cancer. For this purpose, we used the well-established azoxymethane (AOM)/dextran sulfate sodium (DSS)-induced mouse model of colitis-associated cancer. more...

Organism:

Homo sapiens; Mus musculus; Rattus norvegicus; synthetic construct

Type:

Non-coding RNA profiling by array

Platform:

GPL15644

50 Samples

Download data: TXT

(Submitter supplied) To further understand different gene expression of miR-31 knockout mouse colon and normal colon, we have employed colonic epithelium microarray expression profiling as a discovery platform to identify different genes with miR-31 knockout mouse colon and normal colon.comparision with normal colonic epithelium,upgene is 285 and downgene is 178 in knockout group.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL21163

6 Samples

Download data: TXT

(Submitter supplied) The myeloid translocation gene family member MTG16 is a transcriptional corepressor that relies on the DNA-binding ability of other proteins to determine specificity. One such protein is the ZBTB family member Kaiso, and the MTG16:Kaiso interaction is necessary for repression of Kaiso target genes such as matrix metalloproteinase-7. Using the azoxymethane and dextran sodium sulfate (AOM/DSS) murine model of colitis-associated carcinoma, we previously determined that MTG16 loss accelerates tumorigenesis and inflammation. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24247

12 Samples

Download data: XLSX

(Submitter supplied) To understand the extent of Smad-mediated gene regulation in the colon, we isolated colon epithelium from Smad4ΔLrig1 and from Smad4+ control mice (either mice lacking a CreERT allele and treated with tamoxifen, or mice bearing a CreERT allele but treated with vehicle only) and analyzed the colonic epithelium by RNAseq. The ability of TGFβ1 and/or BMP2 to block TNF-mediated induction of Ccl20 from our study suggests that these Smad-mediated pathways may act as gatekeepers for induction of other inflammation-associated genes. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL21493 GPL17021

30 Samples

Download data: TXT

(Submitter supplied) Transcriptome analysis of mRNAs extracted from the rectal mucosa of WT and α6ΔIEC-TAM mice, 15 days after tamoxifen treatment Inflammatory bowel diseases (IBD) in humans are characterized by chronic inflammation and gastrointestinal tissue damage, caused by a combination of genetic and environmental factors. We show that the specific ablation of integrin α6 in intestinal epithelial cells (IECs) results in spontaneous colorectal inflammation in mice. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6246

11 Samples

Download data: CEL, CHP

(Submitter supplied) Inflammatory bowel diseases (IBD) in humans are characterized by chronic inflammation and gastrointestinal tissue damage, caused by a combination of genetic and environmental factors. It has been largely documented that IBD frequently lead to colorectal cancers (CRC). The identification of causative factors of IBD is thus essential to understand CRC progression and develop therapeutical approaches. Models have been described in which molecular alterations are combined with inflammatory treatments in order to recapitulate IBD-associated CRC. Here, we describe a mouse line, α6fl/fl Villin-Cre, in which inactivation of the gene encoding the integrin alpha-6 subunit (ITGA6) specifically in the intestinal mucosa results into chronic inflammation and intestinal carcinogenesis. In these mice, the loss of integrin alpha-6 beta-4, a receptor mediating the attachment of epithelial cells to laminins, leads to epithelial detachment, hyperplasia, chronic inflammation, rectal prolapses, and ultimately adenocarcinomas. Alterations of differentiation affecting mucus secreting (goblet) cells as well as changes in expression of essential intestinal transcription factors were detected. Thus alpha-6 beta-4 integrin is a key factor for the maintenance of intestinal integrity and its loss may represent a risk factor for tumor progression associated with IBD.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6246

13 Samples

Download data: CEL, CHP

(Submitter supplied) Tristetraprolin (TTP), encoded by the Zfp36 gene, is a zinc-finger protein that regulates RNA stability primarily through association with 3’ untranslated regions (3’UTRs) of target mRNAs. While TTP is expressed abundantly in the intestines, its function in intestinal epithelial cells (IECs) is unknown. Here we used a cre-lox system to remove Zfp36 in the mouse epithelium to uncover a role for TTP in IECs and to identify target genes in these cells. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17021

6 Samples

Download data: TXT

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing; Methylation profiling by high throughput sequencing

Platform:

GPL19057

18 Samples

Download data: TXT

(Submitter supplied) Inflammation is highly associated with colon carcinogenesis. Epigenetic mechanisms play an important role in the initiation and progression of colon cancer. Curcumin is a dietary cancer preventive phytochemical with promising effect in suppressing colitis-associated colon cancer (CAC) in azoxymethane (AOM) and dextran sulfate sodium (DSS) mouse model. In the present study, we confirmed the effect of curcumin in suppressing colon cancer. more...

Organism:

Mus musculus

Type:

Methylation profiling by high throughput sequencing

Platform:

GPL19057

6 Samples

Download data: TXT

(Submitter supplied) Inflammation is highly associated with colon carcinogenesis. Epigenetic mechanisms play an important role in the initiation and progression of colon cancer. Curcumin is a dietary cancer preventive phytochemical with promising effect in suppressing colitis-associated colon cancer (CAC) in azoxymethane (AOM) and dextran sulfate sodium (DSS) mouse model. In the present study, we confirmed the effect of curcumin in suppressing colon cancer. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19057

12 Samples

Download data: TXT