GEO DataSets

(Submitter supplied) Deregulation of canonical Wnt/beta-catenin pathway is one of the earliest events in the pathogenesis of colon cancer. Mutations in APC or CTNNB1 (beta-catenin gene) are highly frequent in colon cancer and cause aberrant stabilization of b-catenin, which activates the transcription of Wnt target genes by binding to chromatin via the TCF/LEF transcription factors. Here we report an integrative analysis of genome-wide chromatin occupancy of b-catenin by chromatin immunoprecipitation coupled with high-throughput sequencing (ChIP-seq) and gene expression profiling by microarray analysis upon RNAi-mediated knockdown of beta-catenin in colon cancer cells (GSE53656).

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL16791

2 Samples

Download data: BED, WIG

(Submitter supplied) Deregulation of the canonical Wnt/beta-catenin pathway is one of the earliest events in the pathogenesis of colon cancer. Mutations in APC or CTNNB1 are frequent in colon cancer and cause aberrant stabilization of beta-catenin, which activates Wnt target genes by binding to chromatin via TCF/LEF transcription factors. In a comprehensive study, we conducted an integrative analysis of genome-wide chromatin occupancy of beta-catenin by chromatin immunoprecipitation coupled with high-throughput sequencing (ChIP-seq) along with gene expression profiling changes resulting from RNAi-mediated knockdown of beta-catenin in colon cancer cells. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL4372

2 Samples

Download data

(Submitter supplied) The impact of Mll1 removal on intestinal stem cells expressing an oncogenic form of beta-catenin (beta-cateninGOF) was analysed in 4 pairs of sorted intestinal stem cells of Lgr5-CreERT2; beta-cateninGOF;Mll1+/- (control) and Lgr5-CreERT2; beta-cateninGOF;Mll1-/- (knockout) at 10 days after tamoxifen-induced mutagenesis. Using 75-base-pair reads, around 30 million reads per sample with comparable unique mapped reads (73-78%) were obtained. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19057

8 Samples

Download data: TSV

(Submitter supplied) To asses the effect of Apc loss on the intestinal epithelium we induced homozygous VillinCreERT2 Apc flox/flox mice with tamoxifen on 3 consecutive days (day 0, 1 and 2), and harvested small intestinal epithelium on day 3.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6885

8 Samples

Download data: IDAT, TXT

(Submitter supplied) To assess cellular changes upon abrogation of the WNT-signaling pathway, we induced expression of a dominant-negative T-cell factor 4 (TCF4). This showed a remarkable overlap with activation of the unfolded protein response (UTR) in the same colon cancer cell line.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6947

6 Samples

Download data

(Submitter supplied) To assess the effect of activation of the unfolded protein response (UPR) in colon cancer cell lines, we treated cells with the AB5 subtilase cytotoxin (SubAB). This proteolytically cleaves the 78-kDa glucose-regulated protein (GRP78; also known as HSPA5 or BiP) inside the endoplasmic reticulum. We find that the WNT signaling pathway is highly affected upon treatment with SubAB.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6947

6 Samples

Download data

(Submitter supplied) The DNA binding factor Tcf-1 is one of the most prominently expressed genes in thymocytes yet its global DNA binding pattern remained unknown. Here we have assessed by ChIP-seq the Tcf-1 binding pattern in murine thymocytes in WT B6 mice and in mice expressing a stabilized form of the Tcf-1 binding partner beta-Catenin (CAT mice).

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL9250

6 Samples

Download data: WIG

(Submitter supplied) There is much controversy about the role of T-regulatory cells (Treg) in human colon cancer. High densities of tumor-infiltrating Treg can correlate with better or worse clinical outcomes depending on the sutdy. Treg have potent anti-inflammatory functions that have been shown to control cancer progression. However, Treg isolated from patient with colon cancer or in mouse models of polyposis do not have the ability to suppress inflammation and instead promote cancer. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Dataset:

GDS4588

Platform:

GPL6246

44 Samples

Download data: CEL

(Submitter supplied) Activation of b-catenin has been causatively linked to the etiology of colon cancer. Conditional stabilization of this molecule in pro-T-cells promotes thymocyte development without the requirement for preTCR signaling. We show here that activated b-catenin stalls the developmental transition from the double-positive (DP) to the single-positive (SP) thymocyte stage and predisposes DP thymocytes to transformation. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

18 Samples

Download data: CEL

Analysis of T-regulatory cells (Treg) from various organs (small intestine, spleen, mesenteric lymph node) of polyp-ridden Foxp3-GFPxAPCΔ468 reporter males. Tregs from the polyposis model promote cancer. Results provide insight into molecular mechanisms underlying these pathogenic Tregs.

Organism:

Mus musculus

Type:

Expression profiling by array, count, 2 cell type, 2 genotype/variation, 5 tissue sets

Platform:

GPL6246

Series:

GSE41229

44 Samples

Download data: CEL

(Submitter supplied) The aim of this study is to identify EBP50 binding sequence.

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by genome tiling array

Platforms:

GPL8169 GPL8170

2 Samples

Download data: TXT

(Submitter supplied) Mouse liver tumors (T) and non tumoral adjacent livers (NT) sorted from mice knock out for Axin1 gene specifically in the hepatocytes . 3 mice of the brother hood non deleted for Axin1 were used as controls (WT) We used microarrays to determine the differential expression between tumoral and non tumoral tissue.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL18802

16 Samples

Download data: CEL

(Submitter supplied) We analyzed chromatin opening in hepatocytes isolated from Apclox/loxlivers, after injection of adenovirus Ad5 -Cre-GFP and sorting on the basis of GFP signal at day 6, 15 and 21 post-injection. Our aims was to study the impact of an aberrant beta-catenin activation on chromatin opening in hepatocytes during the early steps of liver tumorigenesis.

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL17021

4 Samples

Download data: BW

(Submitter supplied) We have analysed transcriptional effects of BRAF(V600K) in the intestinal epithelium of transgenic mice that harbour an inducible BRAF(V600K) transgene. Mice used in this experiment were compound transgenic for a stem-cell specific Lgr5-EGFP Reporter and either an inducible TdTomato-2A-BRAF(V600K) transgene or an inducibe TdTomato-luciferase transgene.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6885

16 Samples

Download data: TXT

(Submitter supplied) Wnt signaling contributes to the reprogramming and maintenance of cancer stem cell (CSC) states that is activated by the epithelial-mesenchymal transition (EMT) program. However, the mechanistic relationship between the EMT and Wnt pathway in CSCs remains unclear. Chromatin immunoprecipitation with high-throughput sequencing (ChIP-seq) indicated that EMT induces a switch from the β-catenin/E-cadherin/Sox15 complex to the β-catenin/Twist1/TCF4 complex, which then binds to CSC-related gene promoters. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL10558

4 Samples

Download data: TXT

(Submitter supplied) Wnt signaling plays a pivotal role in colorectal cancer. Intrinsic activation of Wnt by mutational events, such as mutations in the tumor suppressor gene APC, represents the most frequent initiating event in this disease background. Long truncated versions of APC retain partial functionality, which leads to a sub-maximal, “just right” activation state of Wnt signaling supposed to be beneficial for disease initiation. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL11154

4 Samples

Download data: TXT

(Submitter supplied) Gain-of-function mutations in exon 3 of beta-catenin (CTNNB1) are specific for Wilms' tumors that have lost WT1, but 50% of WT1-mutant cases lack such "hot spot" mutations. To ask whether stabilization of beta-catenin might be essential after WT1 loss, and to identify downstream target genes, we compared expression profiles in WT1-mutant versus WT1 wild-type Wilms' tumors. Supervised and nonsupervised hierarchical clustering of the expression data separated these two classes of Wilms' tumor. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platforms:

GPL91 GPL8300

39 Samples

Download data: CEL

(Submitter supplied) Functional genomics approach to metastatic colon cancer Mouse model translated to human colon cancer

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

6 Samples

Download data: CEL

(Submitter supplied) Analysis of Rab25 in human colon samples

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

6 Samples

Download data: CEL

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

Organism:

Mus musculus; Homo sapiens

Type:

Expression profiling by array

Platforms:

GPL570 GPL1261

244 Samples

Download data: CEL